def get_lla(t):
orb = Orbital("TJREVERB",
tle_file=(Path(__file__).parent.resolve() /
"tjreverb_tle.txt"))
return ({
'lat': orb.get_lonlatalt(t)[0],
'lon': orb.get_lonlatalt(t)[1],
'alt': orb.get_lonlatalt(t)[2]
})
def get_lonlat(scene, row, col):
"""Get the longitutes and latitudes for the give *rows* and *cols*.
"""
try:
filename = get_filename(scene, "granules")
except IOError:
#from mpop.satin.eps1a import get_lonlat_avhrr
# return get_lonlat_avhrr(scene, row, col)
from pyorbital.orbital import Orbital
import pyproj
from datetime import timedelta
start_time = scene.time_slot
end_time = scene.time_slot + timedelta(minutes=3)
orbital = Orbital("METOP-A")
track_start = orbital.get_lonlatalt(start_time)
track_end = orbital.get_lonlatalt(end_time)
geod = pyproj.Geod(ellps='WGS84')
az_fwd, az_back, dist = geod.inv(track_start[0], track_start[1],
track_end[0], track_end[1])
del dist
M02_WIDTH = 2821885.8962408099
pos = ((col - 1024) * M02_WIDTH) / 2048.0
if row > 520:
lonlatdist = geod.fwd(track_end[0], track_end[1],
az_back - 86.253533216206648, -pos)
else:
lonlatdist = geod.fwd(track_start[0], track_start[1],
az_fwd - 86.253533216206648, pos)
return lonlatdist[0], lonlatdist[1]
try:
if scene.lons is None or scene.lats is None:
records, form = read_raw(filename)
mdrs = [record[1]
for record in records
if record[0] == "mdr"]
sphrs = [record for record in records
if record[0] == "sphr"]
sphr = sphrs[0][1]
scene.lons, scene.lats = _get_lonlats(mdrs, sphr, form)
return scene.lons[row, col], scene.lats[row, col]
except AttributeError:
records, form = read_raw(filename)
mdrs = [record[1]
for record in records
if record[0] == "mdr"]
sphrs = [record for record in records
if record[0] == "sphr"]
sphr = sphrs[0][1]
scene.lons, scene.lats = _get_lonlats(mdrs, sphr, form)
return scene.lons[row, col], scene.lats[row, col]
def get_lonlat(scene, row, col):
"""Get the longitutes and latitudes for the give *rows* and *cols*.
"""
try:
filename = get_filename(scene, "granules")
except IOError:
#from mpop.satin.eps1a import get_lonlat_avhrr
# return get_lonlat_avhrr(scene, row, col)
from pyorbital.orbital import Orbital
import pyproj
from datetime import timedelta
start_time = scene.time_slot
end_time = scene.time_slot + timedelta(minutes=3)
orbital = Orbital("METOP-A")
track_start = orbital.get_lonlatalt(start_time)
track_end = orbital.get_lonlatalt(end_time)
geod = pyproj.Geod(ellps='WGS84')
az_fwd, az_back, dist = geod.inv(track_start[0], track_start[1],
track_end[0], track_end[1])
del dist
M02_WIDTH = 2821885.8962408099
pos = ((col - 1024) * M02_WIDTH) / 2048.0
if row > 520:
lonlatdist = geod.fwd(track_end[0], track_end[1],
az_back - 86.253533216206648, -pos)
else:
lonlatdist = geod.fwd(track_start[0], track_start[1],
az_fwd - 86.253533216206648, pos)
return lonlatdist[0], lonlatdist[1]
try:
if scene.lons is None or scene.lats is None:
records, form = read_raw(filename)
mdrs = [record[1] for record in records if record[0] == "mdr"]
sphrs = [record for record in records if record[0] == "sphr"]
sphr = sphrs[0][1]
scene.lons, scene.lats = _get_lonlats(mdrs, sphr, form)
return scene.lons[row, col], scene.lats[row, col]
except AttributeError:
records, form = read_raw(filename)
mdrs = [record[1] for record in records if record[0] == "mdr"]
sphrs = [record for record in records if record[0] == "sphr"]
sphr = sphrs[0][1]
scene.lons, scene.lats = _get_lonlats(mdrs, sphr, form)
return scene.lons[row, col], scene.lats[row, col]
def update_graph_scatter(n):
satellite = Orbital('TERRA')
tiempo = []
Latitude = []
Longitude = []
Altitude = []
valor = []
v = []
X.append(datetime.datetime.now() - datetime.timedelta())
Y.append(random.randrange(-20, 20))
#datetime.datetime.now().time()
for i in range(2 * n):
v = random.randrange(-20, 20)
time = datetime.datetime.now() - datetime.timedelta(seconds=i * 20)
lon, lat, alt = satellite.get_lonlatalt(time)
Longitude.append(lon)
Latitude.append(lat)
Altitude.append(alt)
tiempo.append(time)
valor.append(v)
trace1 = go.Scatter(x=list(tiempo),
y=list(Altitude),
name='Altitud',
mode='lines+markers')
return {
'data': [trace1],
'layout': go.Layout(transition={
'duration': 1,
'easing': 'cubic-in-out'
})
}
def getGPSPosition(platformName, tleFile, dateTime):
orb = Orbital(platformName, tleFile)
lon, lat, alt = orb.get_lonlatalt(dateTime)
#reading the TLE file
file = open(tleFile)
data = file.read().replace("\n","::")
arr = data.split("::")
for i in range(len(arr)):
if platformName.rstrip() == arr[i].rstrip():
tleOne= arr[i+1]
tleTwo = arr[i+2]
file.close()
sat = ephem.readtle(platformName, tleOne, tleTwo)
#compute satellite position
sat.compute(dateTime)
satlat = math.degrees(sat.sublat)
satlon = math.degrees(sat.sublong)
satele = sat.elevation
satsize = sat.size
satrad = sat.radius
satecl = sat.eclipsed
satasc = sat.a_ra
satdecl = sat.a_dec
return [satlon, satlat, satele, satsize, satrad, satecl, satasc, satdecl]
def GetGPSPosition(platformName, tleFile, dateTime):
orb = Orbital(platformName, tleFile)
lon, lat, alt = orb.get_lonlatalt(dateTime)
return [lon, lat, alt, dateTime]
def update_graph_live(n):
satellite = Orbital("TERRA")
data = {"time": [], "Latitude": [], "Longitude": [], "Altitude": []}
# Collect some data
for i in range(180):
time = datetime.datetime.now() - datetime.timedelta(seconds=i * 20)
lon, lat, alt = satellite.get_lonlatalt(time)
data["Longitude"].append(lon)
data["Latitude"].append(lat)
data["Altitude"].append(alt)
data["time"].append(time)
# Create the graph with subplots
fig = plotly.tools.make_subplots(rows=2, cols=1, vertical_spacing=0.2)
fig["layout"]["margin"] = {"l": 30, "r": 10, "b": 30, "t": 10}
fig["layout"]["legend"] = {"x": 0, "y": 1, "xanchor": "left"}
fig.append_trace(
{"x": data["time"], "y": data["Altitude"], "name": "Altitude", "mode": "lines+markers", "type": "scatter"}, 1, 1
)
fig.append_trace(
{
"x": data["Longitude"],
"y": data["Latitude"],
"text": data["time"],
"name": "Longitude vs Latitude",
"mode": "lines+markers",
"type": "scatter",
},
2,
1,
)
return fig
def fix_tle_orbit(lines):
if Orbital is None:
logger.info("Pyorbital is missing, can't fix orbit number")
return lines
platform_name = lines[0]
orb = Orbital(platform_name, line1=lines[1], line2=lines[2])
epoch = orb.tle.epoch
true_epoch = epoch
# if too close from equator, fast forward to pole
if abs(orb.get_lonlatalt(orb.tle.epoch)[1]) < 5:
epoch += timedelta(days=1 / orb.tle.mean_motion / 4)
orbnum = orb.get_orbit_number(epoch)
ref_lines = get_last_valid_tle_lines(platform_name, epoch)
ref_orb = Orbital(platform_name, line1=ref_lines[1], line2=ref_lines[2])
ref_orbnum = ref_orb.get_orbit_number(epoch)
if orbnum != ref_orbnum:
logger.info("Spurious orbit number for %s: %d (should be %d)",
platform_name, orbnum, ref_orbnum)
logger.info("replacing...")
diff = ref_orbnum - orbnum
lines[2] = lines[2][:63] + \
"{0:05d}".format(orb.tle.orbit + diff) + lines[2][68:]
lines[2] = append_checksum(lines[2][:-1])
return lines
def GetGPSPosition(platformName, tleFile, dateTime):
orb = Orbital(platformName, tleFile)
lon, lat, alt = orb.get_lonlatalt(dateTime)
return [lon, lat, alt, dateTime]
def get_satellite_lat_lon(norad_id, tle_line1, tle_line2, date_time):
username = '******'
password = '******'
base_url = 'https://www.space-track.org/'
login_url = base_url + 'ajaxauth/login'
query = base_url + "/basicspacedata/query/class/satcat/NORAD_CAT_ID/" + \
norad_id + \
"/orderby/NORAD_CAT_ID asc/metadata/false"
data = {'identity': username, 'password': password, 'query': query}
# Makes a POST REST call to space-track.org and return the result as a list of JSON
try:
resp = requests.post(login_url, data=data)
except requests.exceptions.RequestException as err:
print("POST RESTful call unsuccessful - unable to obtain LAT/LON : " +
err)
tip_data_list = json.loads(resp.text)
satellite_name = str(tip_data_list[0].get('SATNAME'))
orb = Orbital(satellite=satellite_name, line1=tle_line1, line2=tle_line2)
# Gets longitude, latitude and altitude of the satellite:
lon, lan, alt = orb.get_lonlatalt(date_time)
print("------------------------- DATE & TIME IN UTC : " + str(date_time) +
" -------------------------")
print("LONGITUDE = " + str(lon))
print("LATITUDE = " + str(lan))
return lon, lan
def update_graph_live(n):
data = {'time': [], 'Latitude': [], 'Longitude': [], 'Altitude': []}
sat = Orbital('TERRA')
# Collect some data
for seconds in range(0, 3600, 20):
time = datetime.datetime.now() - datetime.timedelta(seconds=seconds)
data['time'].append(time)
lon, lat, alt = sat.get_lonlatalt(time)
data['Longitude'].append(lon)
data['Latitude'].append(lat)
data['Altitude'].append(alt)
# Create the graph with subplots
result = make_subplots(cols=1, rows=2, vertical_spacing=0.2, )
result['layout']['margin'] = {'b': 30, 'l': 30, 'r': 10, 't': 10, }
result['layout']['legend'] = {'x': 0, 'xanchor': 'left', 'y': 1, }
result.append_trace({'mode': 'lines+markers', 'name': 'Altitude', 'type': 'scatter', 'x': data['time'],
'y': data['Altitude'], }, 1, 1)
result.append_trace(
{'mode': 'lines+markers', 'name': 'Longitude vs Latitude', 'text': data['time'], 'type': 'scatter',
'x': data['Longitude'], 'y': data['Latitude'], }, 2, 1)
return result
def create_orbital_track_shapefile_for_day (track_day, step, dur):
# получаем TLE для NOAA-19
tle_1 = '1 33591U 09005A 21067.53688389 .00000027 00000-0 40065-4 0 9999'
tle_2 = '2 33591 99.1917 85.7021 0014730 58.0337 302.2263 14.12454575622414'
# Создаём экземляр класса Orbital
orb = Orbital("N", line1=tle_1, line2=tle_2)
i = 0
minutes = 0
coord = np.arange(3*dur).reshape(dur, 3)
while minutes < dur:
# Расчитаем час, минуту, секунду (для текущего шага)
utc_hour = int(minutes // 60)
utc_minutes = int((minutes - (utc_hour*60)) // 1)
utc_seconds = int(round((minutes - (utc_hour*60) - utc_minutes)*60))
utc_string = str(utc_hour) + '-' + str(utc_minutes) + '-' + str(utc_seconds)
utc_time = datetime(track_day.year,track_day.month,track_day.day,utc_hour,utc_minutes,utc_seconds)
# Считаем положение спутника
lon, lat, alt = orb.get_lonlatalt(utc_time)
coord[i] [0] = lon
coord[i] [1] = lat
coord[i] [2] = alt + 6400
i += 1
minutes += step
return coord
def runProp():
#orb = Orbital(tle)
orb = Orbital("TJREVERB", tle_file="FILE PATH TO TLE")
now = datetime.utcnow()
#print(tle.inclination)
#print(orb.get_position(now))
print(orb.get_lonlatalt(now))
print()
print(orb.get_next_passes(now, 12, -77.10428, 8.88101, 276, tol=0.001, horizon=0))
def update_graph_live(n):
satellite = Orbital('TERRA')
data = {
'time': [],
'Latitude': [],
'Longitude': [],
'Altitude': []
}
# Collect some data
for i in range(180):
time = datetime.datetime.now() - datetime.timedelta(seconds=i*20)
lon, lat, alt = satellite.get_lonlatalt(
time
)
data['Longitude'].append(lon)
data['Latitude'].append(lat)
data['Altitude'].append(alt)
data['time'].append(time)
# Create the graph with subplots
fig = plotly.tools.make_subplots(rows=2, cols=2, vertical_spacing=0.2)
fig['layout']['margin'] = {
'l': 30, 'r': 10, 'b': 30, 't': 10
}
fig['layout']['legend'] = {'x': 0, 'y': 1, 'xanchor': 'left'}
fig.append_trace ({
'x': data['time'],
'y': data['Altitude'],
'name': 'Altitude',
'mode': 'lines+markers',
'type': 'scatter'
}, 1, 1)
j = go.Scatter(
x =data['Longitude'],
y= data['Latitude'],
text= data['time'],
name= 'Longitude vs Latitude',
mode= 'lines+markers',
type= 'scatter'
)
#trace = go.Figure(data = airports)
#trace = [i,j]
fig.append_trace(j , 2, 1)
#fig.append_trace(j , 2, 1)
return fig
def create_orbital_track_shapefile_for_day(year, month, day, step_minutes,
tle_line1, tle_line2,
output_shapefile):
try:
orb = Orbital("N", tle_file=None, line1=tle_line1, line2=tle_line2)
except (ChecksumError):
print 'Invalid TLE'
return 2
try:
year = int(year)
month = int(month)
day = int(day)
step_minutes = float(step_minutes)
except:
print 'Invalid date'
return 3
w = shapefile.Writer(shapefile.POINT)
w.field('ID', 'C', 40)
w.field('TIME', 'C', 40)
w.field('LAT', 'C', 40)
w.field('LON', 'C', 40)
i = 0
minutes = 0
while minutes < 1440:
utc_hour = int(minutes // 60)
utc_minutes = int((minutes - (utc_hour * 60)) // 1)
utc_seconds = int(round(
(minutes - (utc_hour * 60) - utc_minutes) * 60))
utc_string = str(utc_hour) + '-' + str(utc_minutes) + '-' + str(
utc_seconds)
utc_time = datetime.datetime(year, month, day, utc_hour, utc_minutes,
utc_seconds)
lon, lat, alt = orb.get_lonlatalt(utc_time)
w.point(lon, lat)
w.record(str(i), utc_string, str(lat), str(lon))
i += 1
minutes += step_minutes
try:
prj = open("%s.prj" % output_shapefile.replace('.shp', ''), "w")
epsg = 'GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]]'
prj.write(epsg)
prj.close()
w.save(output_shapefile)
except:
print 'Unable to save shapefile'
return 4
def create_orbital_track_shapefile_for_day (year, month, day, step_minutes, tle_line1, tle_line2, sat_name):
try:
orb = Orbital("N",tle_file=None,line1=tle_line1, line2=tle_line2)
except:
raise NameError
try:
year = int(year)
month = int(month)
day = int(day)
step_minutes = float(step_minutes)
except:
raise TypeError
trackLayerName = 'Track Layer (' + str(sat_name) + ': ' + str(year) + ':' + str(month) + ':' + str(day) + ')'
trackLayer = QgsVectorLayer("Point", trackLayerName, "memory")
trackLayer.setCrs(QgsCoordinateReferenceSystem(4326))
trackLayerDataProvider = trackLayer.dataProvider()
trackLayer.startEditing()
trackLayerDataProvider.addAttributes( [ QgsField("ID", QVariant.Int),
QgsField("TIME", QVariant.String),
QgsField("LAT", QVariant.Double),
QgsField("LON", QVariant.Double)] )
i = 0
minutes = 0
while minutes < 1440:
QApplication.processEvents()
utc_hour = int(minutes // 60)
utc_minutes = int((minutes - (utc_hour*60)) // 1)
utc_seconds = int(round((minutes - (utc_hour*60) - utc_minutes)*60))
utc_string = str(utc_hour) + ':' + str(utc_minutes) + ':' + str(utc_seconds)
utc_time = datetime.datetime(year,month,day,utc_hour,utc_minutes,utc_seconds)
lon, lat, alt = orb.get_lonlatalt(utc_time)
trackPoint = QgsFeature()
trackPoint.setGeometry(QgsGeometry.fromPoint(QgsPoint(lon,lat)))
trackPoint.setAttributes([i,utc_string,float(lat),float(lon)])
trackLayerDataProvider.addFeatures ([trackPoint])
i += 1
minutes += step_minutes
trackLayer.commitChanges()
trackLayer.updateExtents()
return trackLayer
def update_graph_live(n):
satellite = Orbital('TERRA')
data = {'time': [], 'Latitude': [], 'Longitude': [], 'Altitude': []}
# Collect some data
for i in range(180):
time = datetime.datetime.now() - datetime.timedelta(seconds=i * 20)
lon, lat, alt = satellite.get_lonlatalt(time)
data['Longitude'].append(lon)
data['Latitude'].append(lat)
data['Altitude'].append(alt)
data['time'].append(time)
# Create the graph with subplots
fig = plotly.tools.make_subplots(rows=3, cols=1, vertical_spacing=0.2)
fig['layout']['margin'] = {'l': 30, 'r': 10, 'b': 30, 't': 10}
fig['layout']['legend'] = {'x': 0, 'y': 1, 'xanchor': 'left'}
fig.append_trace(
{
'x': data['time'],
'y': data['Altitude'],
'name': 'Altitude',
'mode': 'lines+markers',
'type': 'scatter'
}, 1, 1)
fig.append_trace(
{
'x': data['Longitude'],
'y': data['Latitude'],
'text': data['time'],
'name': 'Longitude vs Latitude',
'mode': 'lines+markers',
'type': 'scatter'
}, 2, 1)
df = px.data.iris()
fig = px.scatter_3d(df,
x='sepal_length',
y='sepal_width',
z='petal_width',
color='petal_length',
size='petal_length',
size_max=18,
symbol='species',
opacity=0.7)
# tight layout
fig.update_layout(margin=dict(l=0, r=0, b=0, t=0))
return fig
def orbitpos(file_name, names, date):
orbit = []
cont = 0
for nam in names:
try:
orb = Orbital(nam, file_name)
orbit.append(
[nam, orb.get_lonlatalt(date),
orb.get_position(date)])
#altitudine in km da terra #pos normalizata r_sat/r_terra
except:
cont += 1
print(nam, cont)
return orbit
def generate_points_per_satellite(satellite, start, end):
orb = Orbital(satellite)
point_list = []
increment_in_minutes = 0.25
increment = datetime.timedelta(minutes=float(increment_in_minutes))
while start < end:
lon, lat, alt = orb.get_lonlatalt(start)
point_list.append([lat, lon, alt, str(start)])
start += increment
light_list = []
for j in range((len(point_list)) - 1):
if point_list[j][0] >= point_list[j + 1][0]:
light_list.append(point_list[j])
return light_list
def actuate_sats():
"""
Use external library to get positions of requested satellites.
Create new Satellite (look at models) object if there is no satellite with
found name, or update existing satellite if it's already in the DB
:return: None - only create/update/do nothing on DB objects
"""
for name in SAT_NAME:
try:
orb = Orbital(name)
now = datetime.utcnow()
# Get longitude, latitude and altitude of the satellite
geo_position = orb.get_lonlatalt(now)
print("Found {} - {}".format(name, geo_position))
try:
if Satellite.objects.get(name=name):
# if there is satellite with such name -> update info
sat = Satellite.objects.get(name=name)
# save past position
sat_hist = SatHistory.objects.create(name=sat.name,
longi=sat.longi,
lati=sat.lati,
alti=sat.alti)
sat_hist.save()
# update to actual position
sat.longi = geo_position[0]
sat.lati = geo_position[1]
sat.alti = geo_position[2]
sat.date = datetime.utcnow()
sat.save()
sat.hist = SatHistory.objects.filter(name=name)
sat.save()
except ObjectDoesNotExist:
# if there is no satellite with such name
# creating is possible
sat = Satellite.objects.create(name=name,
longi=geo_position[0],
lati=geo_position[1],
alti=geo_position[2]
)
sat.save()
# if there is no satellite with such name in sources
except (KeyError, NotImplementedError):
print('No satellite name found in the sources: {}'.format(name))
def create_orbital_track_shapefile_for_day(track_day, step, dur, tle):
# получаем TLE для NOAA-19
tle_1 = str(tle[0])
tle_2 = str(tle[1])
# Создаём экземляр класса Orbital
orb = Orbital("N", line1=tle_1, line2=tle_2)
i = 0
minutes = 0
coord = np.arange(8 * dur).reshape(dur, 8)
while minutes < dur:
# Расчитаем час, минуту, секунду (для текущего шага)
utc_hour = int(minutes // 60)
utc_minutes = int((minutes - (utc_hour * 60)) // 1)
utc_seconds = int(round(
(minutes - (utc_hour * 60) - utc_minutes) * 60))
utc_string = str(utc_hour) + '-' + str(utc_minutes) + '-' + str(
utc_seconds)
utc_time = datetime(track_day.year, track_day.month, track_day.day,
utc_hour, utc_minutes, utc_seconds)
# Считаем положение спутника
lon, lat, alt = orb.get_lonlatalt(utc_time)
dec_coord = CoordToDec(lon, lat, alt + 6370)
coord[i][0] = int(dec_coord[0])
coord[i][1] = int(dec_coord[1])
coord[i][2] = int(dec_coord[2])
coord[i][3] = int(utc_hour + 3)
coord[i][4] = int(utc_minutes)
coord[i][5] = int(track_day.day)
coord[i][6] = int(track_day.month)
coord[i][7] = int(track_day.year)
i += 1
minutes += step
return coord # возвращает координаты и время в формате: x, y, z, час, минута, д, м, гггг (время местное = Московское)
def generate_points_per_satellite(satellite, start, end):
orb = Orbital(satellite)
satellite_lat_lons = []
increment_in_minutes = 0.083 #Every 5 seconds
increment = datetime.timedelta(minutes=float(increment_in_minutes))
list_of_dates = []
while start < end:
cd = str(start.date())
if cd not in list_of_dates:
list_of_dates.append(cd)
lon, lat, alt = orb.get_lonlatalt(start)
satellite_lat_lons.append([lat, lon, alt, str(start)])
start += increment
light_list = []
for j in range((len(satellite_lat_lons)) - 1):
if satellite_lat_lons[j][0] >= satellite_lat_lons[j + 1][0]:
light_list.append(satellite_lat_lons[j])
return light_list, list_of_dates
s_name = os.environ['SATELLITE']
satellite = Orbital(s_name)
producer = Producer({'bootstrap.servers': bootstrap_servers})
def acked(err, msg):
if err is not None:
print("Failed to deliver message: {}".format(err))
else:
print("Produced record to topic {} partition [{}] @ offset {}".format(
msg.topic(), msg.partition(), msg.offset()))
# send data every one second
while True:
time = datetime.datetime.now()
lon, lat, alt = satellite.get_lonlatalt(time)
record_value = json.dumps({
'lon': lon,
'lat': lat,
'alt': alt,
'time': str(time)
})
producer.produce(topic, key=None, value=record_value, on_delivery=acked)
producer.poll()
sleep(1)
# times for each pixel
times = sgeom.times(start_of_scan)
# get position and velocity for each time of each pixel
pos, vel = orb.get_position(times, normalize=False)
# now, get the vectors pointing to each pixel
vectors = sgeom.vectors(pos, vel)
## compute intersection of lines (directed by vectors and passing through
## (0, 0, 0)) and sphere
## http://en.wikipedia.org/wiki/Line%E2%80%93sphere_intersection
# get the radius of the earth at the given times
(lon, lat, alt) = orb.get_lonlatalt(times)
radius = vnorm(pos) - alt
# do the computation of distance between line and sphere
# centre = -pos
# ldotc = np.einsum("ij,ij->j", centre, vectors)
# centre_square = np.einsum("ij,ij->j", centre, centre)
# d1_ = ldotc - np.sqrt((ldotc ** 2 - centre_square + radius ** 2))
# do the computation between line and ellipsoid
centre = -pos
a__ = 6378.137 # km
b__ = 6356.752314245 # km
radius = np.array([[1/a__, 1/a__, 1/b__]]).T
xr_ = vectors * radius
cr_ = centre * radius
def run(self): # run forever until terminated
while (self.running):
self.counter += 1
# download the latest TLE files
cmd = "wget -O " + self.path + "/satellites0a.txt 'https://www.celestrak.com/NORAD/elements/active.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites1a.txt 'https://www.celestrak.com/NORAD/elements/engineering.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites2a.txt 'https://www.celestrak.com/NORAD/elements/globalstar.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites3a.txt 'https://www.celestrak.com/NORAD/elements/iridium.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites4a.txt 'https://www.celestrak.com/NORAD/elements/nnss.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites5a.txt 'https://www.celestrak.com/NORAD/elements/orbcomm.txt'"
subprocess.check_output(cmd, shell=True)
#print('\n')
# for each file in the search list
for fileNum in range(0, len(self.searchFiles)):
searchfile = self.searchFiles[fileNum]
tlefile = self.tleFiles[fileNum]
writefile = self.writeFiles[fileNum]
file_object = open(searchfile, 'r')
ifile = iter(file_object)
# load all the static information as dictionaries for easy referencing
# a new dictionary is created for each set of static information file
name_to_func = {}
name_to_unid = {}
name_to_year = {}
name_to_info = {}
for item in ifile:
n = item.find(':')
s1 = item.find(',')
s2 = item.find(',', s1 + 1)
s3 = item.find(',', s2 + 1)
unid = item[:n]
name = item[n + 1:s1]
func = item[s1 + 1:s2]
year = item[s2 + 1:s3]
info = item[s3 + 1:].rstrip()
name_to_func[name] = func
name_to_unid[name] = unid
name_to_year[name] = year
name_to_info[name] = info
file_object.close()
# for every satellite in the static information file,
# search the corresponding tle file, and get their longitude, latitude, altitude
local_list = [
] # list to append satellites in the search window
for sat in name_to_unid:
now = datetime.utcnow()
try:
# calls to the PyOrbital files to get the dynamic information
orb = Orbital(sat, tlefile)
(lon, lat, alt) = orb.get_lonlatalt(now)
# error handling
except OrbitalError:
continue
except NotImplementedError:
continue
except KeyError:
continue
# check if the satellite is in the search window
if (abs(lon - clon) <= self.gps_threshold
and abs(lat - clat) <= self.gps_threshold):
# if it is, append the satellite and static information to the list
# name, unique_id, function, year launched, launch number and piece, longitude, latitude, altitude
tmp = [
sat, name_to_unid[sat], name_to_func[sat],
name_to_year[sat], name_to_info[sat], lon, lat, alt
]
local_list.append(tmp)
# write the list to the respective output files
f = open(writefile, 'w')
for item in local_list:
entry = item[1] + ':' + item[0] + ',' + item[
2] + ',' + item[3] + ',' + item[4]
f.write(entry + '\n')
#print(item)
f.close()
def run(self): # run forever until terminated
while (self.running):
self.counter += 1
# download the latest TLE files
cmd = "wget -O " + self.path + "/satellites0b.txt 'https://www.celestrak.com/NORAD/elements/active.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites1b.txt 'https://www.celestrak.com/NORAD/elements/engineering.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites2b.txt 'https://www.celestrak.com/NORAD/elements/globalstar.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites3b.txt 'https://www.celestrak.com/NORAD/elements/iridium.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites4b.txt 'https://www.celestrak.com/NORAD/elements/nnss.txt'"
subprocess.check_output(cmd, shell=True)
cmd = "wget -O " + self.path + "/satellites5b.txt 'https://www.celestrak.com/NORAD/elements/orbcomm.txt'"
subprocess.check_output(cmd, shell=True)
self.currentList = [] # list of satellites in the field of view
# for each file in the search list
for fileNum in range(0, len(self.searchFiles)):
searchfile = self.searchFiles[fileNum]
tlefile = self.tleFiles[fileNum]
file_object = open(searchfile, 'r')
ifile = iter(file_object)
# load all the static information as dictionaries for easy referencing
# a new dictionary is created for each set of static information file
name_to_func = {}
name_to_unid = {}
name_to_year = {}
name_to_info = {}
for item in ifile:
n = item.find(':')
s1 = item.find(',')
s2 = item.find(',', s1 + 1)
s3 = item.find(',', s2 + 1)
unid = item[:n]
name = item[n + 1:s1]
func = item[s1 + 1:s2]
year = item[s2 + 1:s3]
info = item[s3 + 1:].rstrip()
name_to_func[name] = func
name_to_unid[name] = unid
name_to_year[name] = year
name_to_info[name] = info
file_object.close()
# for every satellite in the static information file,
# search the corresponding tle file, and get their longitude, latitude, altitude
for sat in name_to_unid:
now = datetime.utcnow()
try:
# calls to the PyOrbital files to get the dynamic information
orb = Orbital(sat, tlefile)
(lon, lat, alt) = orb.get_lonlatalt(now)
# error handling
except OrbitalError:
continue
except NotImplementedError:
continue
except KeyError:
continue
# if it is, append the satellite and static information to the list
if (abs(lon - clon) <= self.gps_threshold
and abs(lat - clat) <= self.gps_threshold):
# name, unique_id, function, year launched, launch number and piece, longitude, latitude, altitude
# do some post-processing for displaying the name in a cleaner form
# in the PiTFT
np1 = sat.find('(')
if np1 < 0: np1 = len(sat)
np2 = sat.find('[')
if np2 < 0: np2 = len(sat)
np = min(np1, np2)
name = sat[:np].rstrip()
# check if the satellite is new or was already found
if name in self.previousList:
# if satellite was found before use the same colour
satColor = self.previousList[name]
else: # else generate a new rgb colour
# the lower limit for the rgb is 30 because any number below that
# is too dim on the LED matrix
satColor = [
randint(30, 255),
randint(30, 255),
randint(30, 255)
]
self.previousList[name] = satColor
# name, unique_id, function, year launched, launch number and piece, longitude, latitude, altitude
tmp = [
name, name_to_unid[sat], name_to_func[sat],
name_to_year[sat], name_to_info[sat], lon, lat,
alt, satColor
]
self.currentList.append(tmp) # append to list
# write all the found sats to the output files
f = open(self.writeFile, 'w')
for item in self.currentList:
f.write(str(item) + '\n')
#print(item)
f.close()
f = open(self.writeFile2, 'w')
for item in self.currentList:
f.write(str(item) + '\n')
f.close()
if (self.counter > 1000):
self.counter = 0
def getUpcomingPasses(satellite_name,satellite_swath,tle_information, passes_begin_time, passes_period):
observer = ephem.Observer()
observer.lat = GROUND_STATION[0]
observer.long = GROUND_STATION[1]
#updatetime = 0
period = passes_period
#Get most recent TLE for determining upcoming passes from now
tles = tle_information
# make a list of dicts to hold the upcoming pass information for the selected satellites
SCHEDULE = []
observer.date = passes_begin_time
while 1:
for tle in tles:
if tle[0].strip()== satellite_name:
#TODO clean up the use of pyephem versus orbital. Orbital can give a orbit number and does many of the pyephem functions
#TODO add the individual acquisitions as layers in the same ogr output
#TODO use an appropriate google earth icon for satellites at a visible display resolution with a name tag and minutesaway
#TODO print output to logging
satname = str(tle[0]).replace(" ","_")
sat = ephem.readtle(tle[0],tle[1],tle[2])
twole = tlefile.read(tle[0],DATA_IN_DIR+'tles.txt')
now = datetime.utcnow()
#TODO check age of TLE - if older than x days get_tle()
# print "TLE EPOCH:",twole.epoch
oi = float(str.split(tle[2],' ')[3])
orb = Orbital(tle[0])
attributes = []
rt, ra, tt, ta, st, sa = observer.next_pass(sat)
# Determine is pass descending or ascending
sat.compute(rt)
aos_lat = sat.sublat.real*(180/math.pi)
sat.compute(st)
los_lat = sat.sublat.real*(180/math.pi)
if (aos_lat > los_lat):
# print "PASS = descending"
node = "descending"
else:
# print "PASS = ascending"
node = "ascending"
oi = 360 - oi
AOStime = datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S")
minutesaway = (AOStime-now).seconds/60.0
# print "Satellie = ", satname
# print "Minutes to horizon = ", minutesaway
# print "AOStime = ", rt
# print "LOStime = ", st
# print "Transit time = ", tt
# -----------------------------------------------------------------------------
# This is a test routine for calculating Az, El angles
# -----------------------------------------------------------------------------
orad = orb.get_lonlatalt(datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S"))[2]
# print '&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&'
test_az_el_cal(orb,observer, rt, ra, tt, ta, st, sa,orad)
# print '&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&'
#
attributes = {'Satellite name': satname, 'Orbit height': orad, 'Orbit': orb.get_orbit_number(datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S")), \
# attributes = {'Satellite name': satname, 'Orbit height': orad, 'Orbit': orb.get_orbit_number(datetime.strptime(str(tt), "%Y/%m/%d %H:%M:%S")), \
'Current time': str(now),'Minutes to horizon': minutesaway, 'AOS time': str(rt), \
'LOS time': str(st), 'Transit time': str(tt), 'Node': node}
# Append the attributes to the list of acquisitions for the acquisition period
if not any ((x['Satellite name'] == satname and x['Orbit'] == orb.get_orbit_number(datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S")))for x in SCHEDULE):
# if not any ((x['Satellite name'] == satname and x['Orbit'] == orb.get_orbit_number(datetime.strptime(str(tt), "%Y/%m/%d %H:%M:%S")))for x in SCHEDULE):
SCHEDULE.append(attributes)
# Step from AOS to LOS in 100 second intervals
# delta = timedelta(seconds=100)
delta = timedelta(seconds=DELTA_TIME_STEP)
deltatime = datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S")
geoeastpoint = []
geowestpoint = []
geotrack = []
# print "DELTATIME", deltatime
# print "SETTING TIME", datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S")
# Tesing for next satellite
# --------------------------------------------------------------------------------------------
# --------------------------------------------------------------------------------------------
# The following set of lines have been for testing while making comparision in seconds
# instead of string comparisiom
# --------------------------------------------------------------------------------------------
# --------------------------------------------------------------------------------------------
# print '================ Testing Loop starts ==========================================='
# print 'deltatime = ',deltatime
# print 'Secs Time = ', get_time_secs(str(deltatime).replace("-","/"))
# print 'st = ',str(datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S"))
# print 'st in Secs Time = ',get_time_secs(str(datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S")).replace('-','/'))
# print '================ Testing Loop Ends ==========================================='
# The following if statement has ben included on the basis of dpoch seconds
#
if get_time_secs(str(deltatime).replace("-","/")) >= \
get_time_secs(str(datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S")).replace('-','/')):
return()
print 'Delta Time = ',deltatime
print 'date time = ',datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S")
print '---------------------------'
# if deltatime >= datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S"):
# return()
while deltatime < datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S"):
sat.compute(deltatime)
geotrack.append({'lat2': sat.sublat.real*(180/math.pi), \
'lon2': sat.sublong.real*(180/math.pi), \
'alt2': orb.get_lonlatalt(datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S"))[2]*1000})
eastaz = getEffectiveHeading(sat,oi,sat.sublat.real*(180/math.pi), sat.sublong.real*(180/math.pi), orad, sat._n)+90
westaz = getEffectiveHeading(sat,oi,sat.sublat.real*(180/math.pi), sat.sublong.real*(180/math.pi), orad, sat._n)+270
#Set ground swath per satellite sensor
#TODO use view angle check to refine step from satellite track see IFOV
swath = float(satellite_swath)/2.
geoeastpoint.append(Geodesic.WGS84.Direct(sat.sublat.real*180/math.pi, sat.sublong.real*180/math.pi, eastaz, swath))
geowestpoint.append(Geodesic.WGS84.Direct(sat.sublat.real*180/math.pi, sat.sublong.real*180/math.pi, westaz, swath))
deltatime = deltatime+delta
# Create current location ogr output
nowpoint = [{'lat2':orb.get_lonlatalt(datetime.utcnow())[1],'lon2':orb.get_lonlatalt(datetime.utcnow())[0],'alt2':orb.get_lonlatalt(datetime.utcnow())[2]*1000}]
#TODO ensure the now attributes are actually attributes for the current position of the satellite and include relevant next pass information...tricky?
#if ((attributes['Orbit']==orb.get_orbit_number(datetime.utcnow()))and(AOStime<now)):
now_attributes = {'Satellite name': satname, 'Orbit height': orb.get_lonlatalt(datetime.utcnow())[2], 'Orbit': orb.get_orbit_number(datetime.utcnow()), \
'Current time': str(now),'Minutes to horizon': "N/A", 'AOS time': "N/A", \
'LOS time': "N/A", 'Transit time': "N/A", 'Node': "N/A"}
#now_attributes=attributes
#CURRENT_POSITION_FILENAME = satname+"_current_position.kml"
CURRENT_POSITION_FILENAME = OUTPUT_DIR+satname+"_current_position.kml"
#TODO draw the current orbit forward for the passes period time from the satellite position as a long stepped ogr line
getVectorFile(now_attributes,nowpoint,'point', CURRENT_POSITION_FILENAME, 'KML')
polypoints = []
for x in geowestpoint:
polypoints.append({'lat2':x['lat2'],'lon2':x['lon2']})
for x in reversed(geoeastpoint):
polypoints.append({'lat2':x['lat2'],'lon2':x['lon2']})
if len(polypoints)>0:
polypoints.append({'lat2':geowestpoint[0]['lat2'],'lon2':geowestpoint[0]['lon2']})
# Create swath footprint ogr output
SWATH_FILENAME = os.path.join(output_path,satname+"."+str(orb.get_orbit_number(datetime.strptime(str(rt),"%Y/%m/%d %H:%M:%S")))+".ALICE.orbit_swath.kml")
ORBIT_FILENAME = os.path.join(output_path,satname+"."+str(orb.get_orbit_number(datetime.strptime(str(rt),"%Y/%m/%d %H:%M:%S")))+".ALICE.orbit_track.kml")
TRACKING_SWATH_FILENAME = os.path.join(output_path,satname+"_tracking_now.kml")
# Create currently acquiring polygon
#TODO def this
# Step from AOS to current time second intervals
observer.date=datetime.utcnow()
sat.compute(observer)
# tkdelta = timedelta(seconds=100)
tkdelta = timedelta(seconds=DELTA_TIME_STEP)
tkrt, tkra, tktt, tkta, tkst, tksa = observer.next_pass(sat)
tkdeltatime = datetime.utcnow()
tkgeoeastpoint = []
tkgeowestpoint = []
tkgeotrack = []
while tkdeltatime < (datetime.utcnow() or datetime.strptime(str(tkst),"%Y/%m/%d %H:%M:%S")):
sat.compute(tkdeltatime)
tkgeotrack.append({'lat2':sat.sublat.real*(180/math.pi),'lon2':sat.sublong.real*(180/math.pi),'alt2':orb.get_lonlatalt(datetime.strptime(str(rt),"%Y/%m/%d %H:%M:%S"))[2]})
tkeastaz = getEffectiveHeading(sat,oi,sat.sublat.real*(180/math.pi), sat.sublong.real*(180/math.pi),orad,sat._n)+90
tkwestaz = getEffectiveHeading(sat,oi,sat.sublat.real*(180/math.pi), sat.sublong.real*(180/math.pi),orad,sat._n)+270
#TODO use view angle check to refine step from satellite track see IFOV
tkswath = float(satellite_swath)/2.
tkgeoeastpoint.append(Geodesic.WGS84.Direct(sat.sublat.real*180/math.pi, sat.sublong.real*180/math.pi, tkeastaz, tkswath))
tkgeowestpoint.append(Geodesic.WGS84.Direct(sat.sublat.real*180/math.pi, sat.sublong.real*180/math.pi, tkwestaz, tkswath))
tkdeltatime = tkdeltatime+tkdelta
tkpolypoints = []
for x in tkgeowestpoint:
tkpolypoints.append({'lat2':x['lat2'],'lon2':x['lon2']})
for x in reversed(tkgeoeastpoint):
tkpolypoints.append({'lat2':x['lat2'],'lon2':x['lon2']})
if len(tkpolypoints)>0:
tkpolypoints.append({'lat2':tkgeowestpoint[0]['lat2'],'lon2':tkgeowestpoint[0]['lon2']})
if not ((attributes['Node']=="ascending")and(satname not in ("AQUA"))):
# Create swath ogr output
getVectorFile(attributes,polypoints,'polygon', SWATH_FILENAME, 'KML')
# Create orbit track ogr output
getVectorFile(attributes,geotrack,'line', ORBIT_FILENAME, 'KML')
# Create currently acquiring ogr output
if ((now >= datetime.strptime(str(tkrt),"%Y/%m/%d %H:%M:%S")) and (now <= datetime.strptime(str(tkst),"%Y/%m/%d %H:%M:%S"))):
getVectorFile(now_attributes,tkpolypoints,'polygon', TRACKING_SWATH_FILENAME, 'KML')
if minutesaway <= period:
# print tle[0], 'WILL BE MAKING A PASS IN ', minutesaway, " MINUTES"
# print ' Rise Azimuth: ', ra
# print ' Transit Time: ', tt
# print ' Transit Altitude: ', ta
# print ' Set Time: ', st
# print ' Set Azimuth: ', sa
# print '================================================='
# print 'Satellite Name = ',satellite_name
for x in sorted(SCHEDULE, key=lambda k: k['AOS time']):
# print x
output_orbit_parameters(x)
# For dictionary entries with 'LOS time' older than now time - remove
if ((datetime.strptime(str(x['LOS time']),"%Y/%m/%d %H:%M:%S"))<(datetime.utcnow())):
# Delete output ogr
if os.path.exists(os.path.join(output_path,satname+"."+str(x['Orbit'])+".ALICE.orbit_swath.kml")):
os.remove(os.path.join(output_path,satname+"."+str(x['Orbit'])+".ALICE.orbit_swath.kml"))
if os.path.exists(os.path.join(output_path,satname+"."+str(x['Orbit'])+".ALICE.orbit_track.kml")):
os.remove(os.path.join(output_path,satname+"."+str(x['Orbit'])+".ALICE.orbit_track.kml"))
# Delete dictionary entry for pass
SCHEDULE.remove(x)
# Unlikely - if no entries in the SCHEDULE don't try to print it
if len(SCHEDULE)>0:
print (datetime.strptime(str(SCHEDULE[0]['AOS time']),"%Y/%m/%d %H:%M:%S"))
# If the AOS time is less than now + the time delta, shift the time to the latest recorded pass LOS time
if ((datetime.strptime(str(SCHEDULE[len(SCHEDULE)-1]['AOS time']),"%Y/%m/%d %H:%M:%S")<(datetime.utcnow()+timedelta(minutes=period)))):
observer.date = (datetime.strptime(str(SCHEDULE[len(SCHEDULE)-1]['LOS time']),"%Y/%m/%d %H:%M:%S")+timedelta(minutes=5))
# Recompute the satellite position for the update time
sat.compute(observer)
# print "MODIFIED OBSERVER DATE",observer.date
else:
# print "--------NOTHING TO MODIFY MOVING TO NEXT SATELLITE IN LIST------"
#TODO - write to html
# Exit the def if the SCHEDULE isn't able to update because there are no passes in the acquisition window
return ()
# print 'Before Time Sleep ......'
# print 'Loop for While .........'
print '============================================================================='
time.sleep(1*SLEEP_STATUS)
return ()
def create_orbital_track_shapefile_for_day(sat_id, track_day, step_minutes,
output_shapefile):
# Для начала получаем TLE
# Если запрошенная дата наступит в будущем, то запрашиваем самые последний набор TLE
if track_day > date.today():
tle_1, tle_2 = get_spacetrack_tle(sat_id, None, None, USERNAME,
PASSWORD, True)
# Иначе на конкретный период, формируя запрос для указанной даты и дня после неё + timedelta(days = 1)
else:
tle_1, tle_2 = get_spacetrack_tle(sat_id, track_day,
track_day + timedelta(days=1),
USERNAME, PASSWORD, False)
# Если не получилось добыть
if not tle_1 or not tle_2:
print('Impossible to retrieve TLE')
return
# Создаём экземляр класса Orbital
orb = Orbital("N", line1=tle_1, line2=tle_2)
# Создаём экземпляр класса Writer для создания шейп-файла, указываем тип геометрии
track_shape = shapefile.Writer(shapefile.POINT)
# Добавляем поля - идентификатор, время, широту и долготу
# N - целочисленный тип, C - строка, F - вещественное число
# Для времени придётся использовать строку, т.к. нет поддержки формата "дата и время"
track_shape.field('ID', 'N', 40)
track_shape.field('TIME', 'C', 40)
track_shape.field('LAT', 'F', 40)
track_shape.field('LON', 'F', 40)
# Объявляем счётчики, i для идентификаторов, minutes для времени
i = 0
minutes = 0
# Простой способ пройти сутки - с заданным в минутах шагом дойти до 1440 минут.
# Именно столько их в сутках!
while minutes < 1440:
# Расчитаем час, минуту, секунду (для текущего шага)
utc_hour = int(minutes // 60)
utc_minutes = int((minutes - (utc_hour * 60)) // 1)
utc_seconds = int(round(
(minutes - (utc_hour * 60) - utc_minutes) * 60))
# Сформируем строку для атрибута
utc_string = str(utc_hour) + '-' + str(utc_minutes) + '-' + str(
utc_seconds)
# И переменную с временем текущего шага в формате datetime
utc_time = datetime(track_day.year, track_day.month, track_day.day,
utc_hour, utc_minutes, utc_seconds)
# Считаем положение спутника
lon, lat, alt = orb.get_lonlatalt(utc_time)
# Создаём в шейп-файле новый объект
# Определеяем геометрию
track_shape.point(lon, lat)
# и атрибуты
track_shape.record(i, utc_string, lat, lon)
# Не забываем про счётчики
i += 1
minutes += step_minutes
# Вне цикла нам осталось записать созданный шейп-файл на диск.
# Т.к. мы знаем, что координаты положений ИСЗ были получены в WGS84
# можно заодно создать файл .prj с нужным описанием
try:
# Создаем файл .prj с тем же именем, что и выходной .shp
prj = open("%s.prj" % output_shapefile.replace('.shp', ''), "w")
# Создаем переменную с описанием EPSG:4326 (WGS84)
wgs84_wkt = 'GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]]'
# Записываем её в файл .prj
prj.write(wgs84_wkt)
# И закрываем его
prj.close()
# Функцией save также сохраняем и сам шейп.
track_shape.save(output_shapefile)
except:
# Вдруг нет прав на запись или вроде того...
print('Unable to save shapefile')
return
JY1SAT (JO-97)
1 43803U 18099AX 19134.16991763 .00000149 00000-0 18753-4 0 9997
2 43803 97.7441 206.5509 0016839 88.1084 272.2065 14.95242491 24118"""
tle = StringIO()
tle.write(amateur_file)
orb = Orbital(
"AO-7",
line1=
"1 07530U 74089B 19134.19581420 -.00000034 00000-0 67853-4 0 9992",
line2=
"2 07530 101.7410 102.2252 0012571 56.5062 14.6811 12.53638015 36076")
now = datetime.utcnow()
# arrayat=Orbital.get_observer_look(lon=120.77,lat=15.15,alt=0.020)
pprint(orb)
# >>> # Get longitude, latitude and altitude of the satellite: >>>
pprint(orb.get_lonlatalt(now))
passes = orb.get_next_passes(now, length=4, lon=120.77, lat=15.15, alt=0.02)
#
# Each Pass a tuple of 3, rise, set, max ele
#
start_pass = passes[0][0]
end_pass = passes[0][1]
min_elevation = 10
while (start_pass < end_pass):
sky_location = orb.get_observer_look(start_pass,
lon=120.77,
lat=15.15,
alt=0.02)
if sky_location[1] >= min_elevation:
print("Az {:6.2f} Ele {:6.2f} ".format(sky_location[0],
sky_location[1]))
def initMap(input,hourval,minuteval):
#orb = Orbital(input,tle_file='stations.txt')
print hourval
print minuteval
latlist = []
longlist = []
textlist = []
now = datetime.datetime.utcnow()
newdate = now.replace(hour=hourval, minute=minuteval)
if type(input) is list:
textlist = input
for a in input:
orb = Orbital(a,tle_file=my_file)
locationset = orb.get_lonlatalt(newdate)
latlist.append(locationset[0])
longlist.append(locationset[1])
else:
textlist = [input]
print textlist
orb = Orbital(input, tle_file=my_file)
locationset = orb.get_lonlatalt(newdate)
latlist = [locationset[0]]
longlist = [locationset[1]]
print latlist
print longlist
data = [ dict(
text = textlist,
lat = latlist,
mode = "markers+text",
lon = longlist,
type = "scattergeo",
showlegend = True,
textposition = "bottom center"
)
]
layout = dict(
width = 1000,
height = 700,
geo = dict(
scope = 'world',
showland = True,
showframe = False,
#landcolor = "rgb(212, 212, 212)",
#subunitcolor = "rgb(255, 255, 255)",
countrycolor = "rgb(255, 255, 255)",
#showlakes = True,
#showsubunits = True,
showcountries = True,
projection = dict(type = "orthographic"),
# lonaxis = dict(
# showgrid = False,
# gridwidth = 0.5,
# range= [ -1080, 1080.0 ],
# dtick = 5
# ),
# lataxis = dict (
# showgrid = False,
# gridwidth = 0.5,
# range= [ -1080, 1080 ],
# dtick = 5
# )
)
)
fig = {'data': data, 'layout': layout}
return fig
day = 4
month = 3
hour = 19
minute = 30
second = 49
"""## Cálculo de trayectoria"""
orb = Orbital(satelite)
#now = datetime.utcnow()
local_tz = pytz.timezone("America/Montevideo")
UTC_dif = 3
dtobj = datetime(year, month, day, hour + UTC_dif, minute, second)
dtobj2 = dtobj + timedelta(seconds=duracion_s)
lon, lat, alt = orb.get_lonlatalt(dtobj)
lon2, lat2, alt2 = orb.get_lonlatalt(dtobj2)
coords_1 = (lat, lon)
coords_2 = (lat2, lon2)
distancia = geopy.distance.vincenty(coords_1, coords_2).km
print("Posición inicio:", orb.get_position(dtobj))
print("Longitud:", lon)
print("Latitud:", lat)
print("Altura (km):", alt)
print("\nPosición final:", orb.get_position(dtobj2))
print("Longitud:", lon2)
print("Latitud:", lat2)
satellite = sys.argv[1]
userLat = float(sys.argv[2])
userLng = float(sys.argv[3])
userAlt = float(sys.argv[4])
line1 = sys.argv[5]
line2 = sys.argv[6]
tle = tlefile.read(satellite, None, line1, line2)
orb = Orbital(satellite, None, line1, line2)
now = datetime.utcnow()
# Get normalized position and velocity of the satellite:
pos, vel = orb.get_position(now)
# Get longitude, latitude and altitude of the satellite:
position = orb.get_lonlatalt(now)
data = {}
timestamp = calendar.timegm(now.utctimetuple())
az, el = orb.get_observer_look(now, userLng, userLat, userAlt);
data['user_view'] = {}
data['user_view']['azimuth'] = az
data['user_view']['elevation'] = el
data['timestamp'] = timestamp
data['satellite'] = satellite
brng = (brng + 360) % 360
brng = 360 - brng
return brng
orb = Orbital("NOAA 19", tle_file='../tle/noaa18_June_14_2018.txt')
tc = datetime(2018, 6, 15, 14, 7, 52)
im = plt.imread('m3.png')
im = im[:, 85:995]
oim = im[:]
print(im.shape)
tdelta = int(im.shape[0] / 16)
top = orb.get_lonlatalt(tc + timedelta(seconds=int(im.shape[0] / 4) -
tdelta))[:2][::-1]
bot = orb.get_lonlatalt(tc + timedelta(seconds=int(im.shape[0] / 4) +
tdelta))[:2][::-1]
center = orb.get_lonlatalt(tc +
timedelta(seconds=int(im.shape[0] / 4)))[:2][::-1]
rot = angleFromCoordinate(*bot, *top)
print(rot)
rotated_img = ndimage.rotate(im, rot)
rimg = rotated_img[:]
w = rotated_img.shape[1]
h = rotated_img.shape[0]
m = Basemap(projection='cass',
lon_0=center[1],
def get_lat_lon_sgp(tle_1, tle_2, utc_time):
# Инициализируем экземпляр класса Orbital двумя строками TLE
orb = Orbital("N", line1=tle_1, line2=tle_2)
# Вычисляем географические координаты функцией get_lonlatalt, её аргумент - время в UTC.
lon, lat, alt = orb.get_lonlatalt(utc_time)
return lon, lat
class Satellite(object):
def __init__(self,
name,
speed=60,
orbit_count=1,
swath_color=(255, 0, 0, 127),
track_color=(255, 255, 255, 200),
swath_width=10000):
self.name = name
self.orbit = Orbital(name)
self.NUM_STEPS = 255
self.speed = speed
self.orbit_count = orbit_count
self.swath_width = swath_width
# Styling
self.swath_color = swath_color
self.track_color = track_color
@property
def period(self):
return self.orbit.orbit_elements.period * self.orbit_count
@property
def time(self):
return datetime.datetime.utcnow()
@property
def timestep(self):
return (self.period / self.NUM_STEPS) * 60
def time_steps(self):
steps = []
start_time = self.time
for step in range(self.NUM_STEPS):
step_info = {'startTime': start_time}
start_time += datetime.timedelta(seconds=self.timestep)
step_info.update({'endTime': start_time})
steps.append(step_info)
return steps
def ground_track(self, time=True, altitude=True):
duration = 0
track = []
for item in [
self.orbit.get_lonlatalt(x['startTime'])
for x in self.time_steps()
]:
if time:
track.append(duration)
track.append(item[0])
track.append(item[1])
if altitude:
track.append(1000 * item[2])
else:
track.append(0)
duration += self.timestep
return track
def to_czml(self):
output = []
time_steps = self.time_steps()
ground_track = self.ground_track()
start_time = time_steps[0]['startTime'].strftime("%Y-%m-%dT%H:%M:%S")
end_time = time_steps[-1]['endTime'].strftime("%Y-%m-%dT%H:%M:%S")
# Global packet
global_element = {
'id': 'document',
'name': self.name,
'version': '1.0',
'clock': {
'interval': start_time + '/' + end_time,
'currentTime': start_time,
'multiplier': self.speed,
}
}
output.append(global_element)
# Path object
path_object = {
'id': self.name + '/Propagated Orbit',
'name': self.name + ' Propagated Orbit',
'availability': start_time + '/' + end_time,
'position': {
'epoch': start_time,
'cartographicDegrees': ground_track
},
'path': {
"material": {
"polylineOutline": {
"color": {
"rgba": self.track_color
},
"outlineColor": {
"rgba": [255, 255, 255, 200]
},
"outlineWidth": 5
}
},
'width': 1,
'resolution': 120,
}
}
output.append(path_object)
# Point variable
point_object = {
"id": self.name + '/Satellite',
"name": self.name + " Satellite",
"availability": start_time + '/' + end_time,
"position": {
"epoch": start_time,
"cartographicDegrees": ground_track
},
"billboard": {
"image":
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADJSURBVDhPnZHRDcMgEEMZjVEYpaNklIzSEfLfD4qNnXAJSFWfhO7w2Zc0Tf9QG2rXrEzSUeZLOGm47WoH95x3Hl3jEgilvDgsOQUTqsNl68ezEwn1vae6lceSEEYvvWNT/Rxc4CXQNGadho1NXoJ+9iaqc2xi2xbt23PJCDIB6TQjOC6Bho/sDy3fBQT8PrVhibU7yBFcEPaRxOoeTwbwByCOYf9VGp1BYI1BA+EeHhmfzKbBoJEQwn1yzUZtyspIQUha85MpkNIXB7GizqDEECsAAAAASUVORK5CYII=",
"scale": 2
},
"label": {
"fillColor": {
"rgba": [0, 255, 0, 255]
},
"font": "15pt Lucida Console",
"horizontalOrigin": "LEFT",
"outlineColor": {
"rgba": [0, 0, 0, 255]
},
"outlineWidth": 4,
"pixelOffset": {
"cartesian2": [12, 0]
},
"style": "FILL_AND_OUTLINE",
"text": self.name,
"verticalOrigin": "CENTER",
}
}
output.append(point_object)
# Corridor (swath width)
corridor_object = {
'id': self.name + '/Corridor',
'name': self.name + ' Ground Swath',
'corridor': {
'positions': {
'cartographicDegrees':
self.ground_track(time=False, altitude=False)
},
'width': self.swath_width,
"material": {
"solidColor": {
"color": {
"rgba": self.swath_color
}
}
}
}
}
output.append(corridor_object)
return output
def to_czml_multi(self, placeholder, conn):
conn.send(self.to_czml())
conn.close()
def getUpcomingPasses(satellite_name, tle_information, passes_begin_time, passes_period):
observer = ephem.Observer()
observer.lat = ground_station[0]
observer.long = ground_station[1]
#updatetime = 0
period = passes_period
#Get most recent TLE for determining upcoming passes from now
tles = tle_information
# make a list of dicts to hold the upcoming pass information for the selected satellites
schedule = []
observer.date = passes_begin_time
while 1:
print "---------------------------------------"
for tle in tles:
if tle[0] == satellite_name:
#TODO clean up the use of pyephem versus orbital. Orbital can give a orbit number and does many of the pyephem functions
#TODO add the individual acquisitions as layers in the same ogr output
#TODO use an appropriate google earth icon for satellites at a visible display resolution with a name tag and minutesaway
#TODO print output to logging
satname = str(tle[0]).replace(" ","_")
sat = ephem.readtle(tle[0],tle[1],tle[2])
twole = tlefile.read(tle[0],'tles.txt')
now = datetime.utcnow()
#TODO check age of TLE - if older than x days get_tle()
print "TLE EPOCH:",twole.epoch
#if twole.epoch < now - timedelta(days=5):
# get_tles()
# satname = str(tle[0]).replace(" ","_")
# sat = ephem.readtle(tle[0],tle[1],tle[2])
# twole = tlefile.read(tle[0],'tles.txt')
print "---------------------------------------"
print tle[0]
oi = float(str.split(tle[2],' ')[3])
orb = Orbital(tle[0])
attributes = []
rt, ra, tt, ta, st, sa = observer.next_pass(sat)
# Determine is pass descending or ascending
sat.compute(rt)
aos_lat = sat.sublat.real*(180/math.pi)
sat.compute(st)
los_lat = sat.sublat.real*(180/math.pi)
if (aos_lat > los_lat):
print "PASS = descending"
node = "descending"
else:
print "PASS = ascending"
node = "ascending"
oi = 360 - oi
AOStime = datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S")
minutesaway = (AOStime-now).seconds/60.0
print "Minutes to horizon = ", minutesaway
print "AOStime = ", rt
print "LOStime = ", st
print "Transit time = ", tt
orad = orb.get_lonlatalt(datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S"))[2]
attributes = {'Satellite name': satname, 'Orbit height': orad, 'Orbit': orb.get_orbit_number(datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S")), \
'Current time': str(now),'Minutes to horizon': minutesaway, 'AOS time': str(rt), \
'LOS time': str(st), 'Transit time': str(tt), 'Node': node}
# Append the attributes to the list of acquisitions for the acquisition period
if not any ((x['Satellite name'] == satname and x['Orbit'] == orb.get_orbit_number(datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S")))for x in schedule):
schedule.append(attributes)
# Step from AOS to LOS in 100 second intervals
delta = timedelta(seconds=100)
deltatime = datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S")
geoeastpoint = []
geowestpoint = []
geotrack = []
print "DELTATIME", deltatime
print "SETTING TIME", datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S")
while deltatime < datetime.strptime(str(st), "%Y/%m/%d %H:%M:%S"):
sat.compute(deltatime)
geotrack.append({'lat2': sat.sublat.real*(180/math.pi), \
'lon2': sat.sublong.real*(180/math.pi), \
'alt2': orb.get_lonlatalt(datetime.strptime(str(rt), "%Y/%m/%d %H:%M:%S"))[2]*1000})
eastaz = getEffectiveHeading(sat,oi,sat.sublat.real*(180/math.pi), sat.sublong.real*(180/math.pi), orad, sat._n)+90
westaz = getEffectiveHeading(sat,oi,sat.sublat.real*(180/math.pi), sat.sublong.real*(180/math.pi), orad, sat._n)+270
#Set ground swath per satellite sensor
#TODO use view angle check to refine step from satellite track see IFOV
if tle[0] in ("LANDSAT 8","LANDSAT 7"):
swath = 185000/2
if tle[0] in ("TERRA","AQUA"):
swath = 2330000/2
if tle[0] in ("NOAA 15", "NOAA 18", "NOAA 19"):
swath = 1100000/2
if tle[0] == "SUOMI NPP":
swath = 2200000/2
geoeastpoint.append(Geodesic.WGS84.Direct(sat.sublat.real*180/math.pi, sat.sublong.real*180/math.pi, eastaz, swath))
geowestpoint.append(Geodesic.WGS84.Direct(sat.sublat.real*180/math.pi, sat.sublong.real*180/math.pi, westaz, swath))
deltatime = deltatime+delta
# Create current location ogr output
nowpoint = [{'lat2':orb.get_lonlatalt(datetime.utcnow())[1],'lon2':orb.get_lonlatalt(datetime.utcnow())[0],'alt2':orb.get_lonlatalt(datetime.utcnow())[2]*1000}]
#TODO ensure the now attributes are actually attributes for the current position of the satellite and include relevant next pass information...tricky?
#if ((attributes['Orbit']==orb.get_orbit_number(datetime.utcnow()))and(AOStime<now)):
now_attributes = {'Satellite name': satname, 'Orbit height': orb.get_lonlatalt(datetime.utcnow())[2], 'Orbit': orb.get_orbit_number(datetime.utcnow()), \
'Current time': str(now),'Minutes to horizon': "N/A", 'AOS time': "N/A", \
'LOS time': "N/A", 'Transit time': "N/A", 'Node': "N/A"}
#now_attributes=attributes
CURRENT_POSITION_FILENAME = satname+"_current_position.kml"
#TODO draw the current orbit forward for the passes period time from the satellite position as a long stepped ogr line
getVectorFile(now_attributes,nowpoint,'point', CURRENT_POSITION_FILENAME, 'KML')
polypoints = []
for x in geowestpoint:
polypoints.append({'lat2':x['lat2'],'lon2':x['lon2']})
for x in reversed(geoeastpoint):
polypoints.append({'lat2':x['lat2'],'lon2':x['lon2']})
if len(polypoints)>0:
polypoints.append({'lat2':geowestpoint[0]['lat2'],'lon2':geowestpoint[0]['lon2']})
# Create swath footprint ogr output
SWATH_FILENAME = os.path.join(output_path,satname+"."+str(orb.get_orbit_number(datetime.strptime(str(rt),"%Y/%m/%d %H:%M:%S")))+".ALICE.orbit_swath.kml")
ORBIT_FILENAME = os.path.join(output_path,satname+"."+str(orb.get_orbit_number(datetime.strptime(str(rt),"%Y/%m/%d %H:%M:%S")))+".ALICE.orbit_track.kml")
TRACKING_SWATH_FILENAME = os.path.join(output_path,satname+"_tracking_now.kml")
# Create currently acquiring polygon
#TODO def this
# Step from AOS to current time second intervals
observer.date=datetime.utcnow()
sat.compute(observer)
tkdelta = timedelta(seconds=100)
tkrt, tkra, tktt, tkta, tkst, tksa = observer.next_pass(sat)
tkdeltatime = datetime.utcnow()
tkgeoeastpoint = []
tkgeowestpoint = []
tkgeotrack = []
while tkdeltatime < (datetime.utcnow() or datetime.strptime(str(tkst),"%Y/%m/%d %H:%M:%S")):
sat.compute(tkdeltatime)
tkgeotrack.append({'lat2':sat.sublat.real*(180/math.pi),'lon2':sat.sublong.real*(180/math.pi),'alt2':orb.get_lonlatalt(datetime.strptime(str(rt),"%Y/%m/%d %H:%M:%S"))[2]})
tkeastaz = getEffectiveHeading(sat,oi,sat.sublat.real*(180/math.pi), sat.sublong.real*(180/math.pi),orad,sat._n)+90
tkwestaz = getEffectiveHeading(sat,oi,sat.sublat.real*(180/math.pi), sat.sublong.real*(180/math.pi),orad,sat._n)+270
#TODO use view angle check to refine step from satellite track see IFOV
if tle[0] in ("LANDSAT 8","LANDSAT 7"):
tkswath = 185000/2
if tle[0] in ("TERRA","AQUA"):
tkswath = 2330000/2
if tle[0] in ("NOAA 15", "NOAA 18", "NOAA 19"):
tkswath = 1100000/2
if tle[0] == "SUOMI NPP":
tkswath = 2200000/2
tkgeoeastpoint.append(Geodesic.WGS84.Direct(sat.sublat.real*180/math.pi, sat.sublong.real*180/math.pi, tkeastaz, tkswath))
tkgeowestpoint.append(Geodesic.WGS84.Direct(sat.sublat.real*180/math.pi, sat.sublong.real*180/math.pi, tkwestaz, tkswath))
tkdeltatime = tkdeltatime+tkdelta
tkpolypoints = []
for x in tkgeowestpoint:
tkpolypoints.append({'lat2':x['lat2'],'lon2':x['lon2']})
for x in reversed(tkgeoeastpoint):
tkpolypoints.append({'lat2':x['lat2'],'lon2':x['lon2']})
if len(tkpolypoints)>0:
tkpolypoints.append({'lat2':tkgeowestpoint[0]['lat2'],'lon2':tkgeowestpoint[0]['lon2']})
if not ((attributes['Node']=="ascending")and(satname not in ("AQUA"))):
# Create swath ogr output
getVectorFile(attributes,polypoints,'polygon', SWATH_FILENAME, 'KML')
# Create orbit track ogr output
getVectorFile(attributes,geotrack,'line', ORBIT_FILENAME, 'KML')
# Create currently acquiring ogr output
if ((now >= datetime.strptime(str(tkrt),"%Y/%m/%d %H:%M:%S")) and (now <= datetime.strptime(str(tkst),"%Y/%m/%d %H:%M:%S"))):
getVectorFile(now_attributes,tkpolypoints,'polygon', TRACKING_SWATH_FILENAME, 'KML')
if minutesaway <= period:
print "---------------------------------------"
print tle[0], 'WILL BE MAKING A PASS IN ', minutesaway, " MINUTES"
print ' Rise Azimuth: ', ra
print ' Transit Time: ', tt
print ' Transit Altitude: ', ta
print ' Set Time: ', st
print ' Set Azimuth: ', sa
for x in sorted(schedule, key=lambda k: k['AOS time']):
print x
# For dictionary entries with 'LOS time' older than now time - remove
if ((datetime.strptime(str(x['LOS time']),"%Y/%m/%d %H:%M:%S"))<(datetime.utcnow())):
# Delete output ogr
if os.path.exists(os.path.join(output_path,satname+"."+str(x['Orbit'])+".ALICE.orbit_swath.kml")):
os.remove(os.path.join(output_path,satname+"."+str(x['Orbit'])+".ALICE.orbit_swath.kml"))
if os.path.exists(os.path.join(output_path,satname+"."+str(x['Orbit'])+".ALICE.orbit_track.kml")):
os.remove(os.path.join(output_path,satname+"."+str(x['Orbit'])+".ALICE.orbit_track.kml"))
# Delete dictionary entry for pass
schedule.remove(x)
# Unlikely - if no entries in the schedule don't try to print it
if len(schedule)>0:
print (datetime.strptime(str(schedule[0]['AOS time']),"%Y/%m/%d %H:%M:%S"))
# If the AOS time is less than now + the time delta, shift the time to the latest recorded pass LOS time
if ((datetime.strptime(str(schedule[len(schedule)-1]['AOS time']),"%Y/%m/%d %H:%M:%S")<(datetime.utcnow()+timedelta(minutes=period)))):
observer.date = (datetime.strptime(str(schedule[len(schedule)-1]['LOS time']),"%Y/%m/%d %H:%M:%S")+timedelta(minutes=5))
# Recompute the satellite position for the update time
sat.compute(observer)
print "MODIFIED OBSERVER DATE",observer.date
else:
print "--------NOTHING TO MODIFY MOVING TO NEXT SATELLITE IN LIST------"
#TODO - write to html
# Exit the def if the schedule isn't able to update because there are no passes in the acquisition window
return ()
time.sleep(1*sleep_status)
return ()
# PyOrbital get_position and get_lonlatalt cases
# Use current TLEs from Celestrak: http://celestrak.com/NORAD/elements/
# SATELLITE
sat = "SENTINEL-3A"
#orb = Orbital('SENTINEL-3A', tle_file='./EO_Sat.txt')
orb = Orbital(sat)
now = datetime.utcnow()
# Get position and velocity of the satellite:
print(orb.get_position(now, normalize=False))
# Get longitude, latitude and altitude of the satellite:
print(orb.get_lonlatalt(now))
# Create a new Map centered on position [0,0]
m = folium.Map(location=[10, 0],zoom_start = 1)
# Function to get position with a deltatime from now(). (Default deltatime is 0)
def getsatpos(DeltaTiming=0):
now = datetime.utcnow() + timedelta(seconds = DeltaTiming)
# Get longitude, latitude and altitude of the satellite:
lon,lat,alt = orb.get_lonlatalt(now)
return(lat,lon)
# Function to get an orbit over an specified period of time. (Default period is 101 min)
def getoneorbit(period=6060):
prd = period/2