10.4.33 Geoid Height Packet
This packet provides the offset at the current location between the WGS84 ellipsoid and the EGM96 geoid
model. This can be used to determine the current height above mean sea level and also depth through the
following equations:
Height Above Mean Sea Level = WGS84 Height – Geoid Height
Depth = Geoid Height – WGS84 Height
WGS84 Height is the height at the current location in the System State packet.
Geoid Height Packet
Packet ID
54
Length
4
Read / Write
Read
Field #
Bytes Offset
Data Type
Size
Description
1
0
fp32
4
Geoid height (m)
Table 81: Geoid Height Packet
10.4.34 RTCM Corrections Packet
This packet is used to encapsulate RTCM v3 correction data to be sent to the GNSS Compass internal GNSS
receiver for DGPS or RTK GNSS functionality.
RTCM Corrections Packet
Packet ID
55
Length
Variable, up to 255 bytes
Read / Write
Write
Field #
Bytes Offset
Data Type
Size
Description
1
0
RTCM corrections data
Table 82: RTCM Corrections Packet
v2.0
Page 103
04 Nov 2021
GNSS Compass Reference Manual • Advanced Navigation Packet Protocol
Summary of Contents for GNSS Compass
Page 1: ...GNSS Compass Reference Manual v2 0 04 Nov 2021 ...
Page 28: ......
