def rnx2snr(obsfile, navfile, snrfile, snroption, year, month, day, dec_rate,
log):
"""
inputs are obsfile - RINEX 2.11
navfile, which can be nav message or sp3 file
snrfile: where the results go
snroption: integer
year,month,day: what it sounds like, integer
dec_rate: integer I think, decimation rate. For fortran users, this is done with teqc
no output - the output is the snrfile that is created
This only works for rinex v2.11.
Kristine M. Larson August 2020
This relies on Joakim's rinex reading code
"""
station = obsfile[0:4]
#logname = 'logs/' + station + 'python.txt'
#log = open(logname, 'w+')
last3 = navfile[-3::]
# figure out if you have a nav file or a sp3 file
orbtype = 'sp3' # assume it is sp3
if (last3 != 'SP3') and (last3 != 'sp3'):
orbtype = 'nav'
log.write("Orbit type {0:4s} \n".format(orbtype))
log.write("File name {0:50s} \n".format(navfile))
# these are the elevation angle limits I have been using for the various SNR formats
emin, emax = elev_limits(snroption)
exitQ = False
obsdata, systemsatlists, prntoidx, obstypes, header, obstimes, gpstime = rinpy.processrinexfile(
obsfile)
obsdata = rinpy.separateobservables(obsdata, obstypes)
obslist = obstypes['G'][:]
# need to check to see what happens without coordinates
key = 'APPROX POSITION XYZ'
if key in header.keys():
log.write('Cartesian coordinates are in the RINEX Header \n')
else:
log.write('RINEX file does not have station coordinates. Exiting \n')
print(
'RINEX file does not have station coordinates. This is illegal. Exiting'
)
return
rv = header['APPROX POSITION XYZ']
recv = [float(i) for i in rv.split()]
recv = np.array(recv)
log.write("XYZ from header {0:15.5f} {1:15.5f} {2:15.5f} \n".format(
recv[0], recv[1], recv[2]))
if np.sum(np.abs(recv)) < 5:
print(
'Your receiver coordinates are in the middle of the Earth. Exiting.'
)
exitQ = True
return
lat, lon, h = g.xyz2llh(recv, 1e-8) # returns lat/lon in radians
up, East, North = g.up(lat, lon) # returns unit vector for UP
# set defaults
s5exist = False
s1exist = False
s2exist = False
if 'S1' in obslist:
s1exist = True
if 'S2' in obslist:
s2exist = True
if 'S5' in obslist:
s5exist = True
if not s1exist and not s2exist:
log.write(
'There are no S1 and no S2 data - this file is not useful for reflectometry \n'
)
exitQ = True
if (orbtype == 'nav'):
gpssatlist = systemsatlists['G'][:]
#print('GPS satellite list', gpssatlist)
navorbits(navfile, obstimes, obsdata, obslist, prntoidx, gpssatlist,
snrfile, s1exist, s2exist, s5exist, up, East, North, emin,
emax, recv, dec_rate, log)
else:
log.write('Read the sp3 file \n')
sp3 = g.read_sp3file(navfile)
testing_sp3(gpstime, sp3, systemsatlists, obsdata, obstypes, prntoidx,
year, month, day, emin, emax, snrfile, up, East, North,
recv, dec_rate, log)
def rnx2snr(obsfile, navfile, snrfile, snroption, year, month, day, dec_rate):
"""
inputs are obsfile - RINEX 2.11
navfile, which can be nav message or sp3 file
snrfile: where the results go
snroption: integer
year,month,day: what it sounds like, integer
dec_rate: integer I think, decimation rate. For fortran users, this is done with teqc
no output - the output is the snrfile that is created
This only works for rinex v2.11.
Kristine M. Larson August 2020
This relies on Joakim's rinex reading code
"""
# figure out if you have a nav file or a sp3 file
last3 = navfile[-3::]
orbtype = 'sp3' # assume it is sp3
if (last3 != 'SP3') and (last3 != 'sp3'):
orbtype = 'nav'
print('orbit type ', orbtype, navfile)
# these are the elevation angle limits I have been using for the various SNR formats
emin, emax = elev_limits(snroption)
exitQ = False
obsdata, systemsatlists, prntoidx, obstypes, header, obstimes, gpstime = rinpy.processrinexfile(
obsfile)
obsdata = rinpy.separateobservables(obsdata, obstypes)
obslist = obstypes['G'][:]
# need to check to see what happens without coordinates
key = 'APPROX POSITION XYZ'
if key in header.keys():
print('has Cartesian coordinates in the RINEX Header')
else:
print('RINEX file does not have station coordinates. Exiting')
return
rv = header['APPROX POSITION XYZ']
recv = [float(i) for i in rv.split()]
recv = np.array(recv)
print('XYZ from header', recv)
if np.sum(np.abs(recv)) < 5:
print(
'Your receiver coordinates are in the middle of the Earth. Exiting.'
)
exitQ = True
return
lat, lon, h = g.xyz2llh(recv, 1e-8) # returns lat/lon in radians
up, East, North = g.up(lat, lon) # returns unit vector for UP
# set defaults
s5exist = False
s1exist = False
s2exist = False
if 'S1' in obslist:
s1exist = True
if 'S2' in obslist:
s2exist = True
if 'S5' in obslist:
s5exist = True
if not s1exist and not s2exist:
print(
'hard to know why you are translating this RINEX file as there are no S1 and S2 data'
)
exitQ = True
if (orbtype == 'nav'):
gpssatlist = systemsatlists['G'][:]
print('GPS satellite list', gpssatlist)
navorbits(navfile, obstimes, obsdata, obslist, prntoidx, gpssatlist,
snrfile, s1exist, s2exist, s5exist, up, East, North, emin,
emax, recv, dec_rate)
else:
print('read the sp3 file')
sp3 = g.read_sp3file(navfile)
test_sp3(gpstime, sp3, systemsatlists, obsdata, obstypes, prntoidx,
year, month, day, emin, emax, snrfile, up, East, North, recv,
dec_rate)
