Wind Packet - Advanced Navigation Spatial FOG Reference Manual

using aircraft airspeed. The packet should contain diferential pressure in Pascals. If
outside air temperature is available it should be set in the message for increased
accuracy, otherwise this field should be set to 15 degrees.
Packet ID
Length
Field Bytes
# Ofset
1 0
2 4
Table 78: External pitot pressure packet
13.9.38

Wind Packet

This packet provides Spatial FOG's current 2D wind velocity. These values are only
valid when external air data is provided to Spatial FOG. 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
# Ofset
1 0
2 4
3 8
Table 79: Wind packet
External Pitot Pressure Packet
Data Size
Type
fp32 4
fp32 4
Data Size
Type
fp32 4
fp32 4
fp32 4
Spatial FOG Reference Manual
Description
Diferential pressure (Pascals.)
Outside air temperature (deg C)
Wind Packet
Description
Wind velocity north (m/s)
Wind velocity east (m/s)
Wind velocity standard deviation (m/s)
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03/05/2018
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