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_avhrr_tiepoints(self, scan_points, scanline_nb):
sgeom = avhrr(scanline_nb, scan_points, apply_offset=False)
# no attitude error
rpy = [0, 0, 0]
s_times = sgeom.times(self.times[:, np.newaxis])
orb = Orbital(self.platform_name)
pixels_pos = compute_pixels(orb, sgeom, s_times, rpy)
lons, lats, alts = get_lonlatalt(pixels_pos, s_times)
return lons, lats
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 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 update_satellite(self, satellite):
"""Update satellite and renew the orbital instance.
"""
if satellite != self._satellite:
self._satellite = satellite
if self._tle_files is not None:
filelist = glob(self._tle_files)
tle_file = max(filelist, key=lambda x: os.stat(x).st_mtime)
else:
tle_file = None
self._orbital = Orbital(self._satellite.upper(), tle_file)
def ground_truth(lat, lon, time, sat, duration):
orb = Orbital(sat, tle_file="active.txt")
delta = timedelta(seconds=1)
azs = []
els = []
for i in range(duration):
az, el = pwm_for(*orb.get_observer_look(time, lon, lat, 0))
azs.append(az)
els.append(el)
time += delta
return azs, els
def __init__(self,name,file):
self.file = file
self.orbital = Orbital(name,file)
self.xyz=[[],[],[]]
self.now = datetime.now()
self.position = self.orbital.get_position(self.now,False)
for i in range(0,2000):
self.now += timedelta(seconds=4)
position = self.orbital.get_position(self.now,False)
for i in range(0,3):
self.xyz[i].append(position[0][i])
def serial_az_el(name, stop_time=(
datetime.utcnow())): # sends data over serial to arduino format (az, el)
satellite = Orbital(name, tle_file=nextPass.path_to_tle)
now = datetime.utcnow()
while int(
(stop_time - now).total_seconds()) >= 0: # while pass is occurring
now = datetime.utcnow()
print(
satellite.get_observer_look(now, nextPass.lon, nextPass.lat,
nextPass.alt)) # print (az, el)
sleep(2) # wait 2 seconds
def test_63(self):
"""Check that no runtimewarning is raised, #63."""
import warnings
from pyorbital.orbital import Orbital
from dateutil import parser
warnings.filterwarnings('error')
orb = Orbital("Suomi-NPP",
line1="1 37849U 11061A 19292.84582509 .00000011 00000-0 25668-4 0 9997",
line2="2 37849 98.7092 229.3263 0000715 98.5313 290.6262 14.19554485413345")
orb.get_next_passes(parser.parse("2019-10-21 16:00:00"), 12, 123.29736, -13.93763, 0)
warnings.filterwarnings('default')
def get_valid_orbit(platform_name, epoch):
orb_nums = []
for tle_file in sorted(get_files(), reverse=True):
try:
orb = Orbital(platform_name, tle_file=tle_file)
except AttributeError:
continue
except ChecksumError:
continue
orb_nums.append(orb.get_orbit_number(epoch))
return int(round(np.median(orb_nums)))
def track():
# tle = tlefile.read('ISS', 'orbit.txt')
orbit = Orbital('ISS', 'Telescope/orbit.txt')
while True:
now = datetime.utcnow()
# print(now)
coords = (orbit.get_position(now)[0])
# print(orbit.get_lonlatalt(now))
# print(coords)
print(convertCartesianToRaDec(coords[0], coords[1], coords[2]))
time.sleep(1)
def __init__(self):
self.ground_lat = EARTH_STATION_LAT
self.ground_long = EARTH_STATION_LONG
self.observer = ephem.Observer()
self.observer.lat = self.ground_lat
self.observer.long = self.ground_long
self.observer.date = datetime.utcnow()
self.tle = IN_TLE_FILE
self.tles = []
self.satellite_name = TRK_SATELLITE
self.orb = Orbital(self.satellite_name, tle_file=self.tle)
def tleCheck(self):
if self.tle_file is not None:
try:
orb = Orbital(self.satName, tle_file=self.tle_file)
except KeyError:
print(
"Satalite Not Found Offline, Check Satalite Exists In TLE File"
)
sys.exit(0)
else:
try:
orb = Orbital(self.satName)
except KeyError:
print("Satalite Not Found Online, Try Using -custom-tle")
sys.exit(0)
return orb
def __init__(self, tle_dict):
if isinstance(tle_dict, list):
self.line1 = tle_dict[0]
self.line2 = tle_dict[1]
self.line3 = tle_dict[2]
else:
self.line1 = tle_dict['line1']
self.line2 = tle_dict['line2']
self.line3 = tle_dict['line3']
self.pyOrbital = Orbital(self.line1,
line1=self.line2,
line2=self.line3)
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 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_angles(self):
"""Get azimuth and zenith angles.
Azimuth angle definition is the same as in pyorbital, but with
different units (degrees not radians for sun azimuth angles)
and different ranges.
Returns:
sat_azi: satellite azimuth angle
degree clockwise from north in range ]-180, 180],
sat_zentih: satellite zenith angles in degrees in range [0,90],
sun_azi: sun azimuth angle
degree clockwise from north in range ]-180, 180],
sun_zentih: sun zenith angles in degrees in range [0,90],
rel_azi: absolute azimuth angle difference in degrees between sun
and sensor in range [0, 180]
"""
self.get_times()
self.get_lonlat()
tle1, tle2 = self.get_tle_lines()
times = self.times
orb = Orbital(self.spacecrafts_orbital[self.spacecraft_id],
line1=tle1,
line2=tle2)
sat_azi, sat_elev = orb.get_observer_look(times[:, np.newaxis],
self.lons, self.lats, 0)
sat_zenith = 90 - sat_elev
sun_zenith = astronomy.sun_zenith_angle(times[:, np.newaxis],
self.lons, self.lats)
alt, sun_azi = astronomy.get_alt_az(times[:, np.newaxis], self.lons,
self.lats)
del alt
sun_azi = np.rad2deg(sun_azi)
rel_azi = get_absolute_azimuth_angle_diff(sun_azi, sat_azi)
# Scale angles range to half open interval ]-180, 180]
sat_azi = centered_modulus(sat_azi, 360.0)
sun_azi = centered_modulus(sun_azi, 360.0)
# Mask corrupt scanlines
for arr in (sat_azi, sat_zenith, sun_azi, sun_zenith, rel_azi):
arr[self.mask] = np.nan
return sat_azi, sat_zenith, sun_azi, sun_zenith, rel_azi
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 get_parallaxed_coor(sat, tle, t, lat, lon, alt, h):
"""
"""
# Setup orbital class with TLE file
orbit = Orbital(sat, line1=tle.line1, line2=tle.line2)
pos = orbit.get_position(t)
# Calculate observer azimuth and elevation
azi, ele = orbit.get_observer_look(t, lon, lat, alt)
# Apply parallax correction for given heights
x, y, z = parallax_corr(h, azi, ele)
# WGS84 parameters
f = 1 / 298.257223563
a = 6378137.
# Convert coordinates and azimuth to radians
radlat = np.deg2rad(lat)
radlon = np.deg2rad(lon)
radazi = np.deg2rad(azi)
# Calculate shifted point coordinates
nlat, nlon, nazi = vinc_pt(f, a, radlat, radlon, radazi, z)
# Reconvert to degree
nlat = np.rad2deg(nlat)
nlon = np.rad2deg(nlon)
nazi = np.rad2deg(nazi)
info = "\n--------------------------------------------------------" + \
"\n ----- Parallax correction summary -----" +\
"\n--------------------------------------------------------" + \
"\n Satellite Name: " + sat + \
"\n Observation Time: " + \
datetime.datetime.strftime(t, "%Y-%m-%d %H:%M:%S") + \
"\n Satellite Position: " + str(pos[0]) + \
"\n Satellite Velocity: " + str(pos[1]) + \
"\n-----------------------------------" + \
"\n Latitude: " + str(lat) + \
"\n Longitude: " + str(lon) + \
"\n Altitude: " + \
str(alt) + "\n Height: " + str(h) + \
"\n-----------------------------------" +\
"\n Azimuth: " + str(azi) + \
"\n Elevation: " + str(ele) + \
"\n Parallax Distance: " + str(z) + \
"\n New Latitude: " + str(nlat) + \
"\n New Longitude: " + str(nlon) + \
"\n--------------------------------------------------------"
logger.debug(info)
return(z, nlat, nlon)
def on_opened(self, event):
fname = os.path.split(event.src_path)[1]
if self._file is None and fnmatch(fname, self._file_pattern):
logger.debug("Opening: " + event.src_path)
self._filename = event.src_path
self._file = open(event.src_path, "rb")
self._where = 0
self._satellite = " ".join(event.src_path.split("_")[1:3])[:-5]
if self._tle_files is not None:
filelist = glob(self._tle_files)
tle_file = max(filelist, key=lambda x: os.stat(x).st_mtime)
else:
tle_file = None
self._orbital = Orbital(self._satellite, tle_file)
def loadAll(self):
# read satellite TLE data and store by satellite ID
with open(self.TLE_DB, 'r') as dbFile:
while dbFile:
header = dbFile.readline().rstrip()
if not header: break
line1 = dbFile.readline().rstrip()
line2 = dbFile.readline().rstrip()
name = header
try:
orb = Orbital(name, line1=line1, line2=line2)
satID = orb.tle.satnumber
self.orbByID[satID] = orb
except:
#print "Failed to create TLE for", name
pass
# read satellite communication parameters
with open(self.SAT_DB, 'r') as dbFile:
for line in dbFile:
line = line.rstrip()
fields = line.split(';')
name = fields[0]
satID = fields[1]
uplink = fields[2].rstrip()
downlink = fields[3].rstrip()
beacon = fields[4].rstrip()
mode = fields[5].rstrip()
status = fields[7].rstrip()
if satID:
self.satByID[satID] = (uplink, downlink, beacon, mode,
status, name)
#else:
#print "Ignoring", name, satID, status
#if status == 'active' or status == 'Operational':
#print name, name in self.orbByName
#if name in nameFix:
# name = nameFix[name]
# print name
# Intersection of satellites with TLE info and comms info
self.satIDs = set(self.orbByID.keys()) & set(self.satByID.keys())
#missing = set(self.satByID.keys()) - set(self.orbByID.keys())
#print ', '.join(sorted([self.orbByID[x].satellite_name for x in self.satIDs]))
return
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
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 get_view_zen_angles(sat_name, tle_filename, area_def_name, time_slot):
"""Calculate the satellite zenith angles for the given satellite
(*sat_name*, *tle_filename*), *area_def_name* and *time slot*.
Stores the result in the given *cache* parameter.
"""
try:
from pyorbital.orbital import Orbital
except ImportError:
LOGGER.warning("Could not load pyorbital modules")
return
area_def = get_area_def(area_def_name)
lons, lats = area_def.get_lonlats()
orbital_obj = Orbital(sat_name, tle_filename)
elevation = orbital_obj.get_observer_look(time_slot, lons, lats, 0)[1]
view_zen_data = np.subtract(90, np.ma.masked_outside(elevation, 0, 90))
return view_zen_data
def getSentinel2Geometry(startDateUTC, lengthDays, lat, lon, alt=0.0, mission="Sentinel-2a",
tleFile="../TLE/norad_resource_tle.txt"):
"""Calculate approximate geometry for Sentinel overpasses.
Approximate because it assumes maximum satellite elevation
is the time at which target is imaged.
:param startDateUTC: a datetime object specifying when to start prediction.
:type startDateUTC: object
:param lengthDays: number of days over which to perform calculations.
:type lengthDays: int
:param lat: latitude of target.
:type lat: float
:param lon: longitude of target.
:type lon: float
:param alt: altitude of target (in km).
:type alt: float
:param mission: mission name as in TLE file.
:type mission: str
:param tleFile: TLE file.
:type tleFile: str
:return: a python list containing instances of the sensorGeometry class arranged in date order.
:rtype: list
"""
orb = Orbital(mission, tleFile)
passes = orb.get_next_passes(startDateUTC, 24 * lengthDays, lon, lat, alt)
geomList = []
for p in passes:
look = orb.get_observer_look(p[2], lon, lat, alt)
vza = 90 - look[1]
vaa = look[0]
sza = ast.sun_zenith_angle(p[2], lon, lat)
saa = np.rad2deg(ast.get_alt_az(p[2], lon, lat)[1])
if sza < 90 and vza < 10.3:
thisGeom = sensorGeometry()
thisGeom.date_utc = p[2]
thisGeom.vza = vza
thisGeom.vaa = vaa
thisGeom.sza = sza
thisGeom.saa = saa
geomList.append(thisGeom)
return geomList
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 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 granule_inside_area(start_time,
end_time,
platform_name,
instrument,
area_def,
thr_area_coverage,
tle_file=None):
"""Check if a satellite data granule is over area interest, using the start and
end times from the filename
"""
try:
metop = Orbital(platform_name, tle_file)
except KeyError:
LOG.exception(
'Failed getting orbital data for {0}'.format(platform_name))
LOG.critical(
'Cannot determine orbit! Probably TLE file problems...\n' +
'Granule will be set to be inside area of interest disregarding')
return True
tle1 = metop.tle.line1
tle2 = metop.tle.line2
mypass = Pass(platform_name,
start_time,
end_time,
instrument=instrument,
tle1=tle1,
tle2=tle2)
acov = mypass.area_coverage(area_def)
LOG.debug("Granule coverage of area %s: %f", area_def.area_id, acov)
is_inside = (acov > thr_area_coverage)
if is_inside:
from pyresample.boundary import AreaDefBoundary
from trollsched.drawing import save_fig
area_boundary = AreaDefBoundary(area_def, frequency=100)
area_boundary = area_boundary.contour_poly
save_fig(mypass, poly=area_boundary, directory='/tmp')
return
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 get_f_elev(satellite):
"""Get the elevation function for a given satellite
"""
if tle_files is not None:
filelist = glob(tle_files)
tle_file = max(filelist, key=lambda x: os.stat(x).st_mtime)
else:
tle_file = None
orb = Orbital(satellite.upper(), tle_file)
def f_elev(utctime):
"""Get the elevation for the given *utctime*.
"""
return orb.get_observer_look(utctime, *coords)[1]
f_elev.satellite = satellite
return f_elev
