NavCom LAND-PAK Rev.N - Manual (Page 137)

Technical Reference Manual Rev. N
Blk = All; Blu = IOP w/Internal Radio ; Red = IOP & LBM ; Grn = Engine only
135
1. 0xB0 output On Change limited to 1Hz.
The 0XB1 msg will be output at same rate as nav rate when the Nav rate > 1Hz, and
0XB1 is scheduled On Change. However, 0xB0 does not follow the Nav rate and if
> 1Hz is desired, must be scheduled at the desired rate (i.e.; 5Hz).
2. Outputs On Trigger and by SV not supported.
3. 50Hz output available as an option.
4.
L1
= c/f
L1
= 299792458 M/s / 1575420000 Hz = 0.190293672798 meters
Example:
This is a properly formatted B0 message
Non-Repetitive section
ID Length Week Time Time Slew N Clock Stable NAV Valid
B0 28 1410 391952000 0 1 0 1
Repetitive Section
PRN
P2L2
Valid P1
Valid CaL1
Valid
CA L1 Slip P1 P2 L2 Slip
3 1 1 1 1907198094 35 4 -101 91 1048188 3
Checksum
CF
Type Count
Wn5
P1 Pseudorange
P1 cycles = (CA + P1)/16
P1 Range = P1 cycles *
L1
S16
L1
Cycles
0 – 32767
-1 – (-32768)
LSB: 2 -4 2
Wn6
P2 Pseudorange
P2 cycles = (CA + P2)/16
P2 Range = P2 cycles *
L1
S16
L1
Cycles
0 – 32767
-1 – (-32768)
LSB: 2
-4
2
Wn7
L2 phase
B0-B3: Cycle Slip Counter
B4-B23: L2 Carrier Phase
L2 = (Ca + P2)*(120/154)/16 +
L2 Phase/256
S24
Bitmap
Bitmap
L2
Cycles
0 – 524287
-1 – (-524288)
LSB: 2
-8
3
CKSM Checksum U08 1
ETX 03 (hex) U08 1