| eganders 2007-01-18, 7:33 am |
| I would like to discuss using GPS in test track work with someone. I
am responsible for a govenment test of a multiple sensor system and the
tests will involve tracking 3 vehicles. My interest is to use the
latest technology to make my test track work the most accurate and
fastest to run. I have a decent budget, but I don't want to expend
$25K or $50K unless there is a real labor savings involved, so I am not
necessarily looking for the most expensive solutions, but if I can rent
it, that might also be OK. One of the best solutions is the OTS
RT-3002 (Oxford Technical Solutions RT-3002), but it is quite expensive
when trying to track the choreography of 3 vehicles (upwards of
$150,000).
I have started off with a Pocket PC accelerometer application using a 3
axis accelerometer and a Hollux 236 GPS receiver to test how accurate I
can maintain an acceleration to speed. My first question would be:
How do I use the data from this and combine it with an on-site
differential GPS system to create the best accuracy.
What kind of accuracy can I expect after "on-site" differential
correction The specs are:
Non DGPS (Differential GPS):
=EF=B9=9B Position : 5 - 25 m CEP without SA
=EF=B9=9B Velocity : 0.1m / sec
=EF=B9=9B Time : 1 =CE=BCsec sync GPS time
EGNOS/WAAS /Beacon:
=EF=B9=9B Position : < 2.2 m, horizontal 95 % of time
=EF=B9=9B < 5 m, vertical 95 % of time
The GPS engine is design is based on SiRF Star III low power
Architecture
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