Dear All,
Some days ago I read there are some improvements available for the
"gpsrinex" program.
BTW: Gary, many thanks for the effort and love you put into this gpsd
project.
So I decided I give it a try again after years.
My environment is an U-BLOX ZED-F9P (PROTVER=27.12)
with an antenna HAB-ANN-MB-00-00 fix mounted on the top of the roof of
my house.
I did run twice a measurement as described in example 1 of the man page.
The first with 12 hours 46 min and the second with 12 hours. This was
the command line I used:
gpsrinex -i 30 -n 1440 --ant_num 2 --observer mayer --ant_type
HAB-ANN-MB-00-00 localhost:gpsd:/dev/serial0
When I got the first result I was impressed.
I got a 95% sigma of 12 mm for lat and 10 mm for long.
So I started a second run with 12 hours.
There I got 15 mm and 22 mm as result of sigma. Not so bad I thought.
But then I calculated the distance between this two geolocations.
And the result was disillusioning. The distance is 164 mm , far away of
this 95% sigma.
About 2 years ago I tried to find the accurate position by averaging.
I run 12 times 24 hours measurements.
When I calculate the distance between this result and the gpsrinex
result I get more than half a meter.
So I am not sure what I should believe what is true and what is wrong.
And there is another question.
At the Canadian PPP service I read now they support GLONASS and Galileo
too.
So I left both systems in the config enabled. But the final report
didn't list them.
Kind regards
Hans
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