Data Logs
Chapter 5
WAAS G-III Reference Receiver User Manual Rev 1
119
5.5.14
RAWGPSSUBFRAMEWPB
This log contains the raw L1 C/A GPS 300-bit subframes. One log is output for each tracked L1 C/A GPS
signal regardless of parity failures.
Output states
: Operational
Valid trigger
: ONNEW
Frequency
:
Once every 6 seconds
Message ID
: 570
Header Format
:
Legacy Log
Field
Field Name
Description
Format
# Bytes
Binary
Offset
1
header
Legacy log header
H
0
2
Channel
Signal channel this frame was decoded on
Ulong
4
H
3
prn
Satellite PRN tracked
Ulong
4
H+4
4
#parity failures
Number of subframes that had parity failures since
steady-state tracking
Ulong
4
H+8
5
Data
Raw subframe data
Hex[38]
40
a
H+12
6
32-bit CRC
Hex
4
H+52
a. An additional 2 bytes of padding is added to maintain 4 byte alignment