SBASALMANAC
SBAS Almanac collection
|
Platform: |
OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2 |
This log contains a collection of all current SBAS almanacs that have been decoded by the receiver and may contain almanac data for multiple PRNs. The SBASALMANAC log is populated by the GEO Almanac Message Type 17 which is available in the SBAS17 log. These PRNs are broken out into individual SBAS almanac entries for this message and output individually. If multiple SBAS subsystems (e.g., WAAS, EGNOS, GAGAN, MSAS) are tracked, this message will include almanac data collected from each with the subsystem identified in each message entry. The almanac data contains all of the information required to compute the satellite position as well as health and status information.
The OEM7 family of receivers automatically save almanacs in their Non-Volatile Memory (NVM), so creating an almanac boot file is not necessary.
Message ID: 1425
Log Type: Asynch
Recommended Input:
Log SBASALMANACA onchanged
ASCII Example:
#SBASALMANACA,USB1,3,50.5,SATTIME,2209,514769.000,02000020,b46b,16809;131,WAAS,82752,0,0,-19136000,-37572600,0,0,0,0*a1514a7e
#SBASALMANACA,USB1,2,50.5,SATTIME,2209,514769.000,02000020,b46b,16809;133,WAAS,82752,0,0,-26616200,-32700200,26000,0,0,0*d4db7b3c
#SBASALMANACA,USB1,1,50.5,SATTIME,2209,514769.000,02000020,b46b,16809;135,WAAS,82752,0,0,-24164400,-34543600,0,0,0,0*f26489ca
#SBASALMANACA,USB1,0,50.5,SATTIME,2209,514720.000,02000020,b46b,16809;138,WAAS,82496,0,0,-12513800,-40258400,78000,0,0,0*7e01e7f5
|
Field |
Field Type |
Description |
Format |
Binary Bytes |
Binary Offset |
|
1 |
Log header |
SBASALMANAC header For information about log headers, see ASCII, Abbreviated ASCII or Binary. |
|
H |
0 |
|
2 |
Satellite ID |
Satellite ID |
Ulong |
4 |
H |
|
3 |
Variant |
System variant (refer to Table: SBAS Subsystem Types) |
Enum |
4 |
H + 4 |
|
4 |
Time |
Time of day (s) |
Ulong |
4 |
H + 8 |
|
5 |
Data ID |
Data identification |
Ushort |
2 |
H + 12 |
|
6 |
Health |
Satellite health |
Ushort |
2 |
H + 14 |
|
7 |
X |
ECEF X coordinate (m) |
Long |
4 |
H + 16 |
|
8 |
Y |
ECEF Y coordinate (m) |
Long |
4 |
H + 20 |
|
9 |
Z |
ECEF Z coordinate (m) |
Long |
4 |
H + 24 |
|
10 |
X Velocity |
X rate of change (m/s) |
Long |
4 |
H + 28 |
|
11 |
Y Velocity |
Y rate of change (m/s) |
Long |
4 |
H + 32 |
|
12 |
Z Velocity |
Z rate of change (m/s) |
Long |
4 |
H + 36 |
|
13 |
CRC |
32-bit CRC (ASCII and binary only) |
Ulong |
4 |
H + 40 |
|
14 |
[CR][LF] |
Sentence terminator (ASCII only) |
- |
- |
- |
|
ASCII |
Binary |
Description |
|
NONE |
0 |
No system |
|
UNKNOWN |
1 |
Unknown system |
|
WAAS |
2 |
WAAS system |
|
EGNOS |
3 |
EGNOS system |
|
MSAS |
4 |
MSAS system |
|
GAGAN |
5 |
GAGAN system |
|
QZSS |
7 |
QZSS System |