NavCom LAND-PAK Rev.N - Manual (Page 127)

Technical Reference Manual Rev. N
Blk = All; Blu = IOP w/Internal Radio ; Red = IOP & LBM ; Grn = Engine only
125
0x9d – Binary QC Message – Variable Length
This message contains binary QC information, and is used for C&CT.
Record
Usage Command - No
Response - Yes Input: Not used;
Output: reports QC information
Ref Message Field Description
Data
Type
Units Range Scale
Byte
Count
STX 02 (hex) U08 1
PRA1 99 (hex) U08 1
PRA2 66 (hex) U08 1
ID 0x9d (hex) U08 1
Length 0x00xx U16 2
W1 Decoded GPS week, since Jan 6, 1980 U16 0-65535 2
W2 Decoded GPS time of week U32 sec 0-604800 Lsb: 0.1 4
W3 Unit variance U16
1
Lsb: 1/1024 2
W4
Standard deviation of semi-major axis
of error ellipse; 95% confidence level
U16 meters Lsb: 1/1024 2
W5
Standard deviation of semi-minor axis
of error ellipse; 95% confidence level
U16 meters Lsb: 1/1024 2
W6
Orientation of semi-major axis of error
ellipse in degrees from true north
U16
sec
degrees
0–64800
0–360
LSB: 20
2
W7
Standard deviation of latitude error;
95% confidence level
U16 meters Lsb: 1/1024 2
W8
Standard deviation of latitude error;
95% confidence level
U16 meters Lsb: 1/1024 2
W9
Standard deviation of geodetic height
error; 95% confidence level
U16 meters Lsb: 1/1024 2
W10
Fisher test result
0: Invalid
1: Valid
U08 1
W11 The number of message GBS U08 1
W12
GBS body for each message:
Subw1: SV IDs GPS PRN
(B1=1…B31=31, B0=32)
U08 0-31 1
Subw2: Flag:
B2-B0: Range 0-3 for nav modules
0: CODE_NAV_TASK
1: RTG_NAV_TASK
2: RTK_NAV_TASK
3: L1_PNAV_TASK
B4-B3: GBS Status
0: Invalid
1: Valid, the identified PRN
is still used in nav solution
2: Valid, the identified PRN
is excluded in nav solution
U08 1
1 RMS value of the standard deviation of the range inputs to the navigation process
(range inputs include pseudoranges and dGPS corrections ).