Novatel OM-20000053 Rev 2 BSLA/B Baseline Measurement

D Logs Summary
MiLLennium GPSCard SW Version 4.503/4.52 Command Descriptions Manual Rev 2 143
BSLA/B Baseline Measurement RTK
This log contains the most recent matched baseline representing the vector from the reference station receiver to
the remote station receiver. It is expressed in ECEF coordinates with corresponding uncertainties along each axis,
and a time tag. The estimated variance of the baseline in ECEF XYZ coordinates is the same as the XYZ position
variance.
It is recommended that you use the trigger ‘on changed’ which will log the selected data only when the data has
changed.
BSLA
Structure:
Example:
$BSLA,872,174962.00,8,7,7,-1.346,-3.114,
-2.517,0.005,0.004,0.005,0,0,4,119*36[CR][LF]
$BSLA week seconds #sv #high L1L2 #high
∆x∆y∆z∆x σ∆y σ∆z σsoln status
rtk status posn type stn ID *xx [CR][LF]
Field # Field type Data Description Example
1$BSLA Log header $BSLA
2week GPS week number 872
3seconds GPS time into the week (in seconds) 174962.00
4#sv Number of matched satellites; may differ from the number in view. 8
5#high Number of matched satellites above RTK mask angle; observations from satellites
below mask are heavily de-weighted. 7
6L1L2 # high Number of matched satellites above RTK mask angle with both L1 and L2 available 7
7∆x ECEF X baseline component (remote stn. - reference stn.); in meters -1.346
8∆y ECEF Y baseline component (remote stn. - reference stn.); in meters -3.114
9∆zECEF Z baseline component (remote stn. - reference stn.); in meters -2.517
10 ∆x σStandard deviation of ∆x solution element; in meters 0.005
11 ∆y σStandard deviation of ∆y solution element; in meters 0.004
12 ∆z σStandard deviation of ∆z solution element; in meters 0.005
13 soln status Solution status (see Table D-1) 0
14 rtk status RTK status (see Tables D-3, D-4) 0
15 posn type Position type (see Table D-2) 4
16 stn ID Reference station identification (RTCM: 0 - 1023, or RTCA: 266305 - 15179385) 119
17 *xx Checksum *36
18 [CR][LF] Sentence terminator [CR][LF]