GPS string is a character string containing the Trimble ASCII Interface Protocol (TAIP) output from the Trimble Navigation Placer GPS/DR receiver and has the following format:
>RPVAAAAABBBCCCCCDDDDEEEEEFFFGGGHI<
Field Significance
A UTC of fix (seconds)
B.C Longitude (in degrees, with decimal minutes: + = N, - = S)
D.E Longitude (in degrees, with decimal minutes: - = W, + = E)
F Speed (mph)
G Heading (0 = N)
H Source (0=2D GPS, 1=3D GPS, 2=2D DGPS, 3=3D DGPS, 6=DR, 8=Degraded DR, 9=Unknown)
I Age of Indicator (2=Fresh, <10 sec; 1=Old, >10 sec; 0=Not available)
If a particular field is not determined, only >RPV< would appear.
>RPVAAAAABBBCCCCCDDDDEEEEEFFFGGGHI<
Field Significance
A UTC of fix (seconds)
B.C Longitude (in degrees, with decimal minutes: + = N, - = S)
D.E Longitude (in degrees, with decimal minutes: - = W, + = E)
F Speed (mph)
G Heading (0 = N)
H Source (0=2D GPS, 1=3D GPS, 2=2D DGPS, 3=3D DGPS, 6=DR, 8=Degraded DR, 9=Unknown)
I Age of Indicator (2=Fresh, <10 sec; 1=Old, >10 sec; 0=Not available)
If a particular field is not determined, only >RPV< would appear.