Novatel MiLLennium OM-20000040, Руководство пользователя, Страница: 89 / 130

H NovAtel Format Logs
GPS/GLONASS Receiver User Manual Rev 1 89
CALB
Format: Message ID = 87 Message byte count = 32 + (16 * 32)
H.1.2 GALA/B ALMANAC INFORMATION
The GLONASS almanac reference time and week are in GPS time coordinates. GLONASS ephemeris information
is available through the GEPA/B log.
GALA
Structure:
Example:
$GALA,991,496470.59,991,374232.88,16,22,1,3.004,-9.2257260E-001
3.02841363E-002,1.49440765E-003,1.04694189E-001,-2.6003,
3.66210937E-004,-2.0217896E-004*38
Field # Data Bytes Format Units Offset
1 Sync 3 char 0
Checksum 1 char 3
Message Id 4 integer 4
Message byte count 4 integer bytes 8
2 Week number 4 integer weeks 12
3 Seconds of week 8 double seconds 16
4 Reserved for future use
5 Reserved for future use
6 GloBias (*32)
dBias
dStdev 8
8 double
double meters
meters
32
$GALA week seconds week time SVID freq health TlambdaN
LambadN deltal ecc argperig deltaT deltaTD tau *xx [CR][LF]
Field # Field Description Example
1 $GALA Log Header $GALA
2 Week GPS Week, in weeks 991
3 Seconds GPS Time, in seconds 496470.59
4 Week GPS Week for almanac reference time (GLONASS time in GPS format), in
weeks 991
5 Time GPS Time for almanac reference time (GLONASS time in GPS format), in
seconds 374232.88
6 SVID Slot number for satellite, ordinal 16
7 Freq Frequency for satellite, ordinal 22
8 Health Ephemeris Health (1 = GOOD, 0 = BAD) 1
9 TlambdaN GLONASS Time of ascending node equator crossing, in seconds 3.004
10 LambdaN Longitude of ascending node equator crossing (PZ90), in radians -9.2257260E-001
11 Deltal Correction to nominal inclination, in radians 3.02841363E-002
12 Ecc Eccentricity 1.49440765E-003
13 ArgPerig Argument of perigee (PZ90), in radians 1.04694189E-001
14 DeltaT Offset to nominal orbital period, in seconds -2.6003
15 DeltaTD Rate of orbital period, in seconds per orbital period 3.66210937E-004
16 Tau Clock offset, in seconds -2.0217896E-004*38