Spatial FOG Reference Manual
Page 104 of 144
Version 2.3
03/05/2018
13.9.1.2
Filter Status
This field contains 16 bits that indicate the status of the filters. These are boolean
fields with a zero indicating false and one indicating true.
Bit
Description
0
Orientation Filter Initialised
1
Navigation Filter Initialised
2
Heading Initialised
3
UTC Time Initialised
4
GNSS Fix Status, see section 13.9.1.3
5
6
7
Event 1 Occurred
8
Event 2 Occurred
9
Internal GNSS Enabled
10
Dual Antenna Heading Active
11
Velocity Heading Enabled
12
Atmospheric Altitude Enabled
13
External Position Active
14
External Velocity Active
15
External Heading Active
Table 38: Filter status
13.9.1.3
GNSS Fix Status
Value
Bit 6
Bit 5
Bit 4
Description
0
0
0
0
No GNSS fix
1
0
0
1
2D GNSS fix
2
0
1
0
3D GNSS fix
3
0
1
1
SBAS GNSS fix
4
1
0
0
Diferential GNSS fix
5
1
0
1
Omnistar/Starfire GNSS fix
6
1
1
0
RTK Float GNSS fix
7
1
1
1
RTK Fixed GNSS fix
Table 39: GNSS fix status
13.9.1.4
Unix Time Seconds
This field provides UTC time in seconds since January 1, 1970 including leap seconds.