RAWGPSSUBFRAME
Raw GPS L1 C/A subframe data
|
Platform: |
OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2 |
This log contains the raw GPS L1 C/A subframe data.
A raw GPS L1 C/A subframe is 300 bits in total. This includes the parity bits which are interspersed with the raw data ten times in six bit chunks, for a total of 60 parity bits. Note Field #5, below, has these 60 parity bits stripped out and only the raw subframe data remains, for a total of 240 bits.
Message ID: 25
Log Type: Asynch
Recommended Input:
log rawgpssubframea onnew
ASCII Example:
#RAWGPSSUBFRAMEA,USB1,0,47.0,SATTIME,2209,512808.000,02000020,0457,16809;2,2,4,8b0284a6eeb37a4134a0f0469296b5ee80dc7da6ce1ada076697d4296ac6,2*3f833bb6
The RAWGPSSUBFRAME log can be used to receive the data bits with the parity bits stripped out. Alternately, you can use the RAWGPSWORD log to receive the parity bits in addition to the data bits.
|
Field |
Field type |
Description |
Format |
Binary Bytes |
Binary Offset |
|
1 |
Log header |
RAWGPSSUBFRAME header For information about log headers, see ASCII, Abbreviated ASCII or Binary. |
|
H |
0 |
|
2 |
decode # |
Frame decoder number |
Long |
4 |
H |
|
3 |
PRN |
Satellite PRN number |
Ulong |
4 |
H+4 |
|
4 |
subframe id |
Subframe ID |
Ulong |
4 |
H+8 |
|
5 |
data |
Raw subframe data |
Hex[30] |
321 |
H+12 |
|
6 |
signal channel |
Signal channel number that the frame was decoded on |
Ulong |
4 |
H+44 |
|
7 |
xxxx |
32-bit CRC (ASCII and Binary only) |
Ulong |
4 |
H+48 |
|
8 |
[CR][LF] |
Sentence terminator (ASCII only) |
- |
- |
- |