D Logs summary

MiLLennium Command Descriptions Manual 147

GPGST Pseudorange Measurement Noise Statistics
Pseudorange measurement noise statistics are translated in the position domain in order to give statistical measures
of the quality of the position solution.
Structure:
Example:
$GPGST,192911.0,28.7,21.6,12.0,20.4,20.7,13.6,11.9*51[CR][LF]
$GPGST utc rms smjr std smnr std
orient lat std lon std alt std *xx [CR][LF]
Field Structure Field Description Symbol Example
1$GPGST Log header $GPGST
2utc UTC time of position (hours/minutes/seconds/ decimal seconds) hhmmss.ss 192911.0
3rms RMS value of the standard deviation of the range inputs to the
navigation process. Range inputs include pseudoranges and DGPS
corrections.
x.x 28.7
4smjr std Standard deviation of semi-major axis of error ellipse (metres) x.x 21.6
5smnr std Standard deviation of semi-minor axis of error ellipse (metres) x.x 12.0
6orient Orientation of semi-major axis of error ellipse (degrees from true north) x.x 20.4
7lat std Standard deviation of latitude error (metres) x.x 20.7
8lon std Standard deviation of longitude error (metres) x.x 13.6
9alt std Standard deviation of altitude error (metres) x.x 11.9
10 *xx Checksum *hh *51
11 [CR][LF] Sentence terminator [CR][LF]
10