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34 lines
958 B
34 lines
958 B
# These are all from IS-GPS-200G unless otherwise noted
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SPEED_OF_LIGHT = 2.99792458e8 # m/s
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# Physical parameters of the Earth
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EARTH_GM = 3.986005e14 # m^3/s^2 (gravitational constant * mass of earth)
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EARTH_RADIUS = 6.3781e6 # m
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EARTH_ROTATION_RATE = 7.2921151467e-005 # rad/s (WGS84 earth rotation rate)
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# GPS system parameters:
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GPS_L1 = l1 = 1.57542e9 # Hz
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GPS_L2 = l2 = 1.22760e9 # Hz
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GPS_L5 = l5 = 1.17645e9 # Hz Also E5
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#GLONASS system parameters
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#TODO this is old convention
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GLONASS_L1 = 1.602e9
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GLONASS_L1_DELTA = 0.5625e6
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GLONASS_L2 = 1.246e9
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GLONASS_L2_DELTA = 0.4375e6
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GLONASS_L5 = 1.201e9
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GLONASS_L5_DELTA = 0.4375e6
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#Galileo system parameters: # Has additional frequencies on E6
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#Source RINEX 2.11 document
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GALILEO_E5B = 1.207140e9 # Hz
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GALILEO_E5AB = 1.191795e9 # Hz
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GALILEO_E6 = 1.27875e9 # Hz
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SECS_IN_MIN = 60
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SECS_IN_HR = 60*SECS_IN_MIN
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SECS_IN_DAY = 24*SECS_IN_HR
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SECS_IN_WEEK = 7*SECS_IN_DAY
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SECS_IN_YEAR = 365*SECS_IN_DAY
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