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Data Fields |
| unsigned short | reserved1 |
| | reserved
|
| unsigned short | week |
| | 10 bit gps week 0-1023 (user must account for week rollover) [week]
|
| unsigned short | prn |
| | GPS prn number [].
|
| unsigned char | health |
| | 0=healthy, unhealthy otherwise []
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| unsigned char | is_af0_af1_high_precision |
| double | ecc |
| | eccentricity []
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| double | toa |
| | time of applicability [s]
|
| double | i0 |
| | orbital inclination at reference time [rad]
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| double | omegadot |
| | rate of right ascension [rad/s]
|
| double | sqrta |
| | square root of the semi-major axis [m^(1/2)]
|
| double | omega0 |
| | longitude of ascending node of orbit plane at weekly epoch [rad]
|
| double | w |
| | argument of perigee [rad]
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| double | m0 |
| | mean anomaly at reference time [rad]
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| double | af0 |
| | polynomial clock correction coefficient (clock bias) [s], Note: parameters from ephemeris preferred vs almanac (22 vs 11 bits)
|
| double | af1 |
| | polynomial clock correction coefficient (clock drift) [s/s], Note: parameters from ephemeris preferred vs almanac (16 vs 11 bits)
|