ashtech GG Surveyor, Reference Manual

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Command/Response Formats 127
Com
m
and
s
float af2 4
Clock correction (sec/sec
2
).
float af1 4 Clock correction (sec/sec).
float af0 4 Clock correction (sec).
long aode 4 Orbit data issue.
float deltan 4 Mean anomaly correction (semicircles/sec).
double m0 8 Mean anomaly at reference time (semicircles).
double e 8 Eccentricity.
double roota 8
Square root of semi-major axis (meters
1/2
).
long toe 4 Reference time for orbit (sec).
float cic 4 Harmonic correction term (radians).
float crc 4 Harmonic correction term (meters).
float cis 4 Harmonic correction term (radians).
float crs 4 Harmonic correction term (meters).
float cuc 4 Harmonic correction term (radians).
float cus 4 Harmonic correction term (radians).
double omega0 8 Longitude of ascending node (semicircles).
double omega 8 Argument of perigee (semicircles).
double i0 8 Inclination angle (semicircles).
float omegadot 4 Rate of right ascension (semicircles/sec).
float idot 4 Rate of inclination (semicircles/sec).
short accuracy 2 User range accuracy (URA), coded 0-15.
0 = 2 m 6 = 16 m 12 = 1024 m
1 = 2.8 m 7 = 32 m 13 = 2048 m
2 = 4 m 8 = 64 m 14 = 4096 m
3 = 5.7 m 9 = 128 m 15 = no prediction possible
4 = 8 m 10 = 256 m
5 = 11.3 m 11 = 512 m
short health 2 Satellite health.
short fit 2 Curve fit interval (0 or 1)
0=>interval = 4 hours
1=>interval = 6 hours
char prnnum 1 Satellite PRN number minus 1 (0 to 31)
Table 6.40: SNV (Ephemeris) Structure (continued)
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