[Therion] Multiple fixes for the same point

[Martin Sluka]

OK, you are professional.

But for normal users it is better solution than only pure GPS in smart mobile, I think.

We compared it in forest with pro GPS and differences were not too big (in metres only)

Maybe if you'll test it and write here your opinion it could be useful.

Martin

On Sep 12, 2017, at 11:00 AM, Philippe Vernant via Therion <therion at speleo.sk> wrote:

I will, but I’m using GPS everyday for my job, and I wouldn’t rely to much on a calibration of a handheld device, except if the calibration is in fact some kind of baseline processing on the code signal with data from a broadcasted nearby continuous station.

Phil



On 12 Sep 2017, at 9:34 AM, Martin Sluka via Therion <therion at speleo.sk> wrote:

Check that application features and check it in real situations. You’ll be surprised, I’m sure.

m.s.

12. 9. 2017 v 8:28, Philippe Vernant via Therion <therion at speleo.sk>:

The problem, is that you cannot do a calibration fo a GPS since it will depend on the satellite constellation which change all day long even if you don’t move. So calibration of a GPS is a no no!
If you use accurate GPS measurements, either baseline measurement, of PPP post processing (but you need a GPS slightly more expensive that the regular handheld ;-) ) you can have an accuracy of a few millimetres. So the std-dev should always be given explicitly for GPS.

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