D Logs Summary
MiLLennium GPSCard SW Version 4.503/4.52 Command Descriptions Manual Rev 2 159
FRMA/B Framed Raw Navigation Data

This message contains the raw framed navigation data. An individual message is sent for each PRN being tracked.

The message is updated with each new frame, therefore it is best to log the data with the onnew trigger activated.

FRMA

Structure:

FRMB

Format: Message ID = 54 Message byte count = variable

$FRMA week seconds prn cstatus # of bits framed raw data
*xx [CR][LF]
Field # Field type Data Description Example
1$FRMA Log header $FRMA
2week GPS week number 845
3seconds GPS seconds into the week 238623.412
4prn PRN of satellite from which data originated 120
5cstatus Channel Tracking Status (see Table D-7, Page 203)80811F14
6# of bits Number of bits transmitted in the message. 250 for
WAAS, 300 for GPS and 85 for GLONASS. 250
7framed raw data One field of raw fram ed navigation data. 9AFE5354656C2053796E636
8726F6E69636974792020202
020202020B0029E40*3F
8*xx Checksum *42
9[CR][LF] Sentence terminator [CR][LF]
Field # Data Bytes Format Units Offset
1Sync 3char 0
(header) Checksum 1char 3
Message ID 4integer 4
Message byte count 4integer bytes 8
2Week number 4integer weeks 12
3Seconds of week 8double seconds 16
4PRN number 4integer 1-999 24
5Channel Tracking Status (see Table D-7, Page 203) 4 integer n/a 28
6Number of Bits 4integer 250 for WAAS
300 for GPS
85 for GLONASS
32
7Data Sub-frame variable char N/A 36