GST
Applicable to: UC6580, UM620 series, UM621 series, UM670A, UM680A, UM681A.
| Syntax | $--GST,time,rngRMS,stdMajor,stdMinor,hdg,stdLat,stdLon,stdAlt*cs\r\n | |
|---|---|---|
| Example | $GPGST,060845.00,0.6,,,,0.07,0.09,0.09*47\r\n | |
| Description | GNSS pseudorange error statistics | |
| Input/Output | Output | |
| Parameter Definition | ||
| Parameter | Format | Description |
| -- | STR | Positioning system flag GP - GPS standalone positioning GB - BDS standalone positioning GA - Galileo standalone positioning GL - GLONASS standalone positioning GI - NavIC standalone positioning GN - Dual or multiple constellations joint positioning |
| time | STR | UTC time; in the format of hhmmss.ss: hh - Hour mm - Minute ss.ss - Second |
| rngRMS | DOUBLE | Standard deviation of pseudorange error; unit: m; with a maximum of 99.9; fixedly output 1 decimal place |
| stdMajor | DOUBLE | Standard deviation of semi-major axis of the error ellipse; unit: m; specified to null |
| stdMinor | DOUBLE | Standard deviation of semi-minor axis of the error ellipse; unit: m; specified to null |
| hdg | DOUBLE | Orientation of semi-major axis of the error ellipse; unit: deg; clockwise from north; specified to null |
| stdLat | DOUBLE | Standard deviation of latitude error; unit: m; fixedly output 1 decimal place |
| stdLon | DOUBLE | Standard deviation of longitude error; unit: m; fixedly output 1 decimal place |
| stdAlt | DOUBLE | Standard deviation of altitude error; unit: m; fixedly output 1 decimal place |
| cs | U8 | Checksum; two hexadecimal characters obtained by calculating an XOR of all characters between but not including ‘$' to ‘*' in this message |