Hartmut Holzgraefe <hart...@php.net> writes: > On 5/5/24 21:40, Greg Troxel wrote: >> but it (15cm georeferenced aerial images) does not work in tree cover > > not having watched the video either, and having just a very basic > understanding of RTK, but wouldn't that basically be affected by > reflections from trees the same way as regular GPS, and so be less > precise when being in a forest?
theory: The signals are weaker and probably there is more multipath. The issue is getting a "fixed solution", resolving the integer ambiguities of phase. This low enough noise in the solution so that the chosen solution can be judged better enough than the others. reality: I find that with open sky, I get "RTK FIX" reliably. In the forest, I get "RTK FLOAT", meaning differential, but without resolving the integer ambiguitites. People seem to think that more expensive stuff does better in forests, as in $20,000 Trimble rather than F9P. I'm not saying they are wrong, but that's not too relevant.... _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
