Trimble Outdoors SK8 User Manual
Page 117
Lassen-SK8 Embedded GPS Module
A-53
Trimble Standard Interface Protocol
*
Note – The sign convention provides for a carrier-phase decrease when the pseudorange
increases and the doppler is negative.
28–35,
55–62,...
Pseudorange
DOUBLE
meters
Full L1 C/A
Pseudorange, filtered
36–43,
63–70,...
Carrier Phase
DOUBLE
cycles
L1 band Continuous
Phase (truncated to
integer value)
44–47,
71–74,...
Doppler
SINGLE
hertz
L1 band Doppler
End of the packet data
21+27n
22+27n
Checksum
INTEGER
—
Sum of bytes before
checksum starting with
preamble
23+27n
Postamble
BYTE
3
Table A-58
FLAGS1 Bit Assignments
Bit
Meaning
0 (LSB)
Reserved (set to zero)
1
L1 Carrier-phase Cycle Slip
0: No
1: Yes
2
Reserved (set to zero)
3
Reserved (set to zero)
4
Valid L1 Carrier-phase:
0: No
1: Yes
5
Reserved (set to zero)
6
Reserved (set to zero)
7 (MSB)
New Position Calculated:
0: No
1: Yes
Table A-57
Synchronized Measurements Report (Continued)
Byte #
Item
Type
Value
Meaning