Filter
Top Products
D Logs summary
MiLLennium Command Descriptions Manual 123
ALMB
ALMB FORMAT:
Message ID = 18 Message byte count = 120
IONB FORMAT:
Message ID = 16 Message byte count = 76
Field # Field Type Bytes Format Units Offset
1 Sync 3 0
(header) Checksum 1 3
Message ID 4 4
Message byte count 4 8
2 Satellite PRN number 4 integer 12
3 Eccentricity 8 double 16
4 Almanac ref. time 8 double seconds 24
5 Almanac ref. week 4 integer weeks 32
6 Omegadot - rate of right ascension 8 double radians/second 36
7 Right ascension 8 double radians 44
8 Argument of perigee w 8 double radians 52
9 Mean anomaly Mo 8 double radians 60
10 Clock aging parameter a
f0
8 double seconds 68
11 Clock aging parameter a
f1
8 double seconds/second 76
12 Corrected mean motion 8 double radians/second 84
13 Semi-major axis A 8 double metres 92
14 Angle of inclination 8 double radians 100
15 Sv health from subframe 4, discrete 4 integer 108
16 Sv health from subframe 5, discrete 4 integer 112
17 Sv health from almanac, discrete 4 integer 116
Field # Field Type Bytes Format Units Offset
1 Sync 3 char 0
(header) Checksum 1 char 3
Message ID 4 integer 4
Message byte count 4 integer 8
2 Alpha constant term 8 double seconds 12
3 Alpha 1st order term 8 double sec/semicircle 20
4 Alpha 2nd order term 8 double
sec/(semic.)
2
28
5 Alpha 3rd order term 8 double
sec/(semic.)
3
36
6 Beta constant term 8 double seconds 44
7 Beta 1st order term 8 double sec/semic 52
8 Beta 2nd order term 8 double
sec/(semic.)
2
60
9 Beta 3rd order term 8 double
sec/(semic.)
3
68