<html><body><div>OK, you are professional. </div><div><br data-mce-bogus="1"></div><div>But for normal users it is better solution than only pure GPS in smart mobile, I think.</div><div><br data-mce-bogus="1"></div><div>We compared it in forest with pro GPS and differences were not too big (in metres only)</div><div><br data-mce-bogus="1"></div><div>Maybe if you'll test it and write here your opinion it could be useful.</div><div><br data-mce-bogus="1"></div><div>Martin</div><div><br>On Sep 12, 2017, at 11:00 AM, Philippe Vernant via Therion <therion@speleo.sk> wrote:<br><br></div><div><blockquote type="cite"><div class="msg-quote"><div class="_stretch"><span class="body-text-content">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.<br><br>Phil<br><br><br><br><blockquote type="cite" class="quoted-plain-text">On 12 Sep 2017, at 9:34 AM, Martin Sluka via Therion <therion@speleo.sk> wrote:</blockquote><blockquote type="cite" class="quoted-plain-text"><br></blockquote><blockquote type="cite" class="quoted-plain-text">Check that application features and check it in real situations. You’ll be surprised, I’m sure.</blockquote><blockquote type="cite" class="quoted-plain-text"><br></blockquote><blockquote type="cite" class="quoted-plain-text">m.s.</blockquote><blockquote type="cite" class="quoted-plain-text"><br></blockquote><blockquote type="cite" class="quoted-plain-text"><blockquote type="cite" class="quoted-plain-text">12. 9. 2017 v 8:28, Philippe Vernant via Therion <therion@speleo.sk>:</blockquote></blockquote><blockquote type="cite" class="quoted-plain-text"><blockquote type="cite" class="quoted-plain-text"><br></blockquote></blockquote><blockquote type="cite" class="quoted-plain-text"><blockquote type="cite" class="quoted-plain-text">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!</blockquote></blockquote><blockquote type="cite" class="quoted-plain-text"><blockquote type="cite" class="quoted-plain-text">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.</blockquote></blockquote><blockquote type="cite" class="quoted-plain-text"><br></blockquote><blockquote type="cite" class="quoted-plain-text">_______________________________________________</blockquote><blockquote type="cite" class="quoted-plain-text">Therion mailing list</blockquote><blockquote type="cite" class="quoted-plain-text"><a href="mailto:Therion@speleo.sk" data-mce-href="mailto:Therion@speleo.sk">Therion@speleo.sk</a></blockquote><blockquote type="cite" class="quoted-plain-text"><a href="https://mailman.speleo.sk/listinfo/therion" data-mce-href="https://mailman.speleo.sk/listinfo/therion">https://mailman.speleo.sk/listinfo/therion</a></blockquote><br>_______________________________________________<br>Therion mailing list<br><a href="mailto:Therion@speleo.sk" data-mce-href="mailto:Therion@speleo.sk">Therion@speleo.sk</a><br><a href="https://mailman.speleo.sk/listinfo/therion" data-mce-href="https://mailman.speleo.sk/listinfo/therion">https://mailman.speleo.sk/listinfo/therion</a><br></span></div></div></blockquote></div></body></html>