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D Logs summary
MiLLennium Command Descriptions Manual 121
ALMA
Structure:
ALMA FORMAT
Example:
$ALMA,1,3.55577E-003,32768,745,-7.8860E-009,-6.0052951E-002,-1.1824254E+000,
1.67892137E+000,-1.8119E-005,-3.6379E-012,1.45854965E-004,2.65602281E+007,
9.55576E-001,1,0,0*20[CR][LF]
...
$ALMA,31,4.90665E-003,32768,745,-8.0460E-009,3.05762855E+000,6.14527459E-001,
1.69958217E+000,6.67572E-006,3.63797E-012,1.45861888E-004,2.65593876E+007,
9.61664E-001,1,0,0*13[CR][LF]
$ALMA prn ecc seconds week rate-ra
ra
w
M
o
a
f0
a
f1
cor-mean-motion
A incl-angle health-4 health-5 health-alm *xx [CR][LF]
Field # Field type Data Description Example
1 $ALMA Log header $ALMA
2 prn Satellite PRN number for current message, dimensionless 1
3 ecc Eccentricity, dimensionless 3.55577E-003
4 seconds Almanac reference time, seconds into the week 32768
5 week Almanac reference week (GPS week number) 745
6 rate-ra Rate of right ascension, radians -7.8860E-009
7 ra Right ascension, radians -6.0052951E-002
8 w Argument of perigee, radians -1.1824254E+000
9 M
o
Mean anomaly, radians 1.67892137E+000
10 a
f0
Clock aging parameter, seconds -1.8119E-005
11 a
f1
Clock aging parameter, seconds/second -3.6379E-012
12 cor-mean-motion Corrected mean motion, radians/second 1.45854965E-004
13 A Semi-major axis, metres 2.65602281E+007
14 incl-angle Angle of inclination, radians 9.55576E-001
15 health-4 Anti-spoofing and SV config from subframe 4, page 25 1
16 health-5 SV health, 6 bits/SV (subframe 4 or 5, page 25) 0
17 health-alm SV health, 8 bits (almanac) 0
18 *xx Checksum *20
19 [CR][LF] Sentence terminator [CR][LF]
1 - 19 $ALMA Next satellite PRN almanac message
1 - 19 $ALMA Last satellite PRN almanac message
1 - 11 $IONA Ionospheric Model Parameters
1 - 11 $UTCA UTC Time Parameters