gpsprobe
1
8 Sep 2004
gpsprobe
probe a GPS for type, send-cycle time and accuracy information
gpsprobe
-n packetcount
-p device
DESCRIPTION
gpsprobe samples the NMEA data stream
from a GPS and attempts to deduce various interesting pieces of
information, including:
the GPS type (what chipset it uses)
the inventory of NMEA sentence types it emits
its send cycle (frequency of updates)
In addition, if the GPS is getting position fixes,
gpsprobe generates a scattergram from them
and plots a probable-error circle. This data is only meaningful if
the GPS is held stationary while gpsprobe
is running.
The report and scattergram is generated as a
gnuplot1
script to standard output.
Note: gpsprobe needs access to the raw
GPS device. Therefore gpsd must not be running
when you call gpsprobe.
OPTIONS
The -n option sets the number of packets to sample. The
default is 100.
The -p option sets the name of the GPS device. The default
is /dev/gps.
BUGS AND LIMITAIONS
This program handles only straight NMEA devices; it won't
handle either Rockwell or SiRF binary protocols.
SEE ALSO
gpsd1
libgps3
libgpsd3
gnuplot1
AUTHOR
Eric S. Raymond esr@thyrsus.com.
There is a project page, with gps screenshots, here.