Spatial Reference Manual
Page 131 of 158
Version 4.4
04/06/2019
13.9.28
External Body Velocity Packet
This packet has been defined to support a single velocity standard deviation for all
three axes, or, different values for all three axes. Please ensure you modify the packet
length in the packet header accordingly, depending on which format you are using.
External Body Velocity Packet
Packet ID
47
Length
16 or 24
Field
#
Bytes
Offset
Data
Type
Size
Description
1
0
fp32
4
Velocity X (m/s)
2
4
fp32
4
Velocity Y (m/s)
3
8
fp32
4
Velocity Z (m/s)
4
12
fp32
4
Velocity standard deviation all axes or X only (m/s)
5
12
fp32
4
OPTIONAL: Velocity standard deviation Y (m/s)
6
12
fp32
4
OPTIONAL: Velocity standard deviation Z (m/s)
Table 72: External body velocity packet
13.9.29
External Heading Packet
External Heading Packet
Packet ID
48
Length
8
Field
#
Bytes
Offset
Data
Type
Size
Description
1
0
fp32
4
Heading (rad)
2
4
fp32
4
Heading standard deviation (rad)
Table 73: External heading packet
13.9.30
Running Time Packet
Running Time Packet
Packet ID
49
Length
8
Field
#
Bytes
Offset
Data
Type
Size
Description
1
0
u32
4
Running time seconds
2
4
u32
4
Microseconds
Table 74: Running time packet