External Depth Packet; Geoid Height Packet; Rtcm Corrections Packet - Advanced Navigation Spatial OEM Reference Manual

9.8.34

External Depth Packet

Packet ID
Length
Field # Bytes
Offset
1 0
2 4
Table 60: External depth packet
9.8.35

Geoid Height Packet

This packet provides the offset between the WGS84 ellipsoid and the EGM96 geoid model at the
current location. This can be used to determine mean sea level height and also depth through the
following equations:
Mean Sea Level Height = Height – Geoid Height
Depth = Geoid Height – Height
Packet ID
Length
Field # Bytes
Offset
1 0
Table 61: Geoid height packet
9.8.36

RTCM Corrections Packet

This packet is used to encapsulate RTCM SC-104 differential correction data to be sent to Spatial's
internal GNSS receiver for differential GNSS functionality.
Packet ID
Length
Field # Bytes
Offset
1 0
Table 62: RTCM corrections packet
9.8.37 External Pitot Pressure Packet
This packet is used to interface a pitot tube to Spatial for enhanced navigation using aircraft
External Depth Packet
Data Size
Type
fp32 4
fp32 4
Geoid Height Packet
Data Size
Type
fp32 4
RTCM Corrections Packet
Data Size
Type
Spatial OEM Reference Manual
Page 71 of 88
Version 2.7
53
8
Description
Depth (m)
Depth standard deviation (m)
54
4
Description
Geoid Height (m)
55
Variable, up to 255 bytes
Description
RTCM corrections data