def test_DopplerBase_TEC(): ''' Test TEC value manipulation ''' doppler = DopplerBase(tec_epm2=50.) assert doppler.computeSignalDelayS(1e9) == 40.3 * 50. / 1e18 doppler.tec_epm2 = 25. assert doppler.computeSignalDelayS(1e9) == 40.3 * 25. / 1e18
def test_DopplerBase_applySignalDelay(): ''' Test signal delay computation ''' doppler = DopplerBase(tec_epm2=50.) userTimeAll_s = numpy.asanyarray([1., 2.], dtype=numpy.float) res = doppler.applySignalDelays(userTimeAll_s, GPS.L1CA) delay_s = 40.3 * 50. / 1e18 assert (numpy.abs(res + delay_s - userTimeAll_s) < EPSILON).all()
def test_DopplerBase_computeSpeed():
'''
Test speed computation
'''
doppler = DopplerBase(distance0_m=0., tec_epm2=0.)
try:
doppler.computeSpeedMps(0.)
assert False
except NotImplementedError:
pass
def test_DopplerBase_computeDopplerShiftHz():
'''
Test computation of doppler shift for a time
'''
doppler = DopplerBase()
userTimeAll_s = numpy.asarray([0.], dtype=numpy.float)
try:
doppler.computeDopplerShiftM(userTimeAll_s)
assert False
except NotImplementedError:
pass
def test_DopplerBase_computeDataNChipVector1():
'''
Test combination of data and code
'''
doppler = DopplerBase()
chipAll_idx = numpy.linspace(0, 1022, 1023, dtype=numpy.long)
message = Message(-1)
code = PrnCode(1)
vect = doppler.computeDataNChipVector(chipAll_idx,
GPS.L1CA,
message,
code)
assert len(vect) == 1023
assert ((vect > 0) == code.getCodeBits(chipAll_idx)).all()
def test_DopplerBase_Distance(): ''' Test distance value manipulation ''' doppler = DopplerBase(distance0_m=0., tec_epm2=0.) assert doppler.computeSignalDelayS(1e9) == 0. doppler = DopplerBase(distance0_m=1e6, tec_epm2=0.) assert doppler.computeSignalDelayS(1e9) == 1e6 / scipy.constants.c
def test_DopplerBase_CDI(): ''' Test CDI flag manipulation ''' doppler = DopplerBase() assert not doppler.isCodeDopplerIgnored() doppler.setCodeDopplerIgnored(True) assert doppler.isCodeDopplerIgnored()
def test_DopplerBase_computeBatch():
'''
Test signal generation
'''
doppler = DopplerBase(distance0_m=0., tec_epm2=0.)
userTimeAll_s = numpy.asarray([0.])
amplitude = AmplitudePoly(AmplitudeBase.UNITS_AMPLITUDE, ())
noiseParams = NoiseParameters(NormalRateConfig.SAMPLE_RATE_HZ, 0.)
message = Message(1)
code = PrnCode(1)
try:
doppler.computeBatch(userTimeAll_s,
amplitude,
noiseParams,
GPS.L1CA,
NormalRateConfig.GPS.L1.INTERMEDIATE_FREQUENCY_HZ,
message,
code,
NormalRateConfig,
False)
assert False
except NotImplementedError:
pass
def test_DopplerBase_computeDopplerHz(): ''' Test doppler in Hz computation ''' dopplerHz = DopplerBase.computeDopplerHz(1e9, 100.) assert numpy.abs(dopplerHz == -1e11 / scipy.constants.c) < EPSILON
def test_DopplerBase_computeDeltaUserTimeS(): ''' Test time delay ''' time_s = DopplerBase.computeDeltaUserTimeS(0., 24.84375e6, NormalRateConfig) assert time_s == 1.
