GSOF message: Base Position and Quality

This message describes the base station position and its quality. It is used when the moving base antenna position and quality are required on one serial port (along with a heading message) from a receiver in Heading mode.

Base position and quality indicator (Type 41 record)

Field

Item

Type

Value

Meaning

0

Output record type

Char

29h

Base position and quality output record

1

Record length

Char

Bytes in record

2 to 5

GPS time (ms)

Long

msecs

GPS time, in milliseconds, of GPS week

6 to 7

GPS week number

Short

number

GPS week count since January 1980

8 to 15

Latitude

Double

radians

The WGS-84 latitude, in radians, of the moving base antenna

16 to 23

Longitude

Double

radians

The WGS-84 longitude, in radians, of the moving base antenna

24 to 31

Height

Double

meters

The WGS-84 height, in meters, of the moving base antenna

32

Quality indicator

Char

number

The quality of the base station position:

0: Fix not available or invalid
1: Autonomous GPS fix
2: Differential SBAS or OmniSTAR VBS
4: RTK Fixed, xFill
5: OmniSTAR XP, OmniSTAR HP, CenterPoint RTX, Float RTK, or Location RTK