Wind Packet; Heave Packet - Advanced Navigation Spatial Dual Reference Manual

Packet ID
Length
Field Bytes
# Offset
1 0
2 4
Table 79: External pitot pressure packet
13.9.37

Wind Packet

This packet provides Spatial Dual's current 2D wind velocity. These values are only
valid when external air data is provided to Spatial Dual. This can be either through the
External Pitot Pressure Packet, the External Air Data Packet or when a pitot tube is
interfaced to one of the GPIO pins. When this packet is written to the device, it
disables the wind estimation filter and the wind values provided are used statically.
Packet ID
Length
Field Bytes
# Offset
1 0
2 4
3 8
Table 80: Wind packet
13.9.38

Heave Packet

Packet ID
Length
Field Bytes
# Offset
1 0
2 4
3 8
4 12
Table 81: Heave packet
External Pitot Pressure Packet
Data Size
Type
fp32 4
fp32 4
Data Size
Type
fp32 4
fp32 4
fp32 4
Data Size
Type
fp32 4
fp32 4
fp32 4
fp32 4
Spatial Dual Reference Manual
Differential pressure (Pascals)
Outside air temperature (deg C)
Wind Packet
Wind velocity north (m/s)
Wind velocity east (m/s)
Wind velocity standard deviation (m/s)
Heave Packet
Heave point 1 (m)
Heave point 2 (m)
Heave point 3 (m)
Heave point 4 (m)
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Version 2.3
12/04/2016
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