Trimble R12 in canopy?
Has anyone tried a Trimble R12 under canopy?
I did some testing this summer with an R10 with an RTK base nearby, tracking all available constellations. As long as there were no large tree trunks blocking the signal, I got excellent results, proven by a high accuracy conventional tie between the base and rover monuments. But, when I tried it with large tree trunks (which would totally block the signal, not so good. Makes sense. The R10 with 4 constellations worked well even in a high multipath environment, and the R12 supposedly works even better. The reason I did the test is that we do a lot of woods check points for Lidar, and up til now we used a total station to survey in from a pair of points in the open, this test proved that with so many SV’s available you can get decent results (<0.03 m) with a base nearby.
Here are some pics of the test area…
Here is a video of the site, gives a better idea of what the canopy looked like. As I said, I had little trouble at all initializing and getting good results.
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