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, see 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)

Geoid Height Packet