I've noticed that around 2pm Central time that RTK gets very challenging in canopy. I've not used mission planning in years, but I finally took a look today. GPS from 9am to 6pm in my area is between 7 and 8 sv's above a 10?ø mask, and drops to 6 briefly at 2pm. At 10pm there are 12 GPS satellites available above 10?ø and then again about 5am there are 10+.?ÿ
Interestingly, Glonass also drops considerably along with GPS.
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This is a very handy and easy to use mission planning site if you don't already have one available:
http://gnssmissionplanning.com/
I haven't done mission planning in a while either.?ÿ When I do, I use this one...
https://www.gnssplanning.com/#/settings
Is anyone getting the same thing in the Pacific NW? We have been hearing that in the lower mainland, users have been losing GPS satellites. Drops down to as little as 6 at roughly noon PDT. And, has been getting earlier.
The whole afternoon is crappy in East Texas and it was worse last week. I logged a file as a test of the receiver using the android Trimble DL app just to see if it would work. The point was not important. Came back with (xyz) 0.154m, 0.047m, 0.042m accuracy with ultra-rapid. Sent it again the next day and it wasn't any better. It was logged during the worst part of the afternoon with storms blowing by from the hurricane.
James
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Terrible in the afternoon even with 4 constellations.
@mitchptd with GPS only there is quite a bit of 6 SV time and even drops to 5 SV's around 1500 PDT add in GLONASS and I don't see anything less than 10 SV's using predication software for today (22-Jul-2019) in Seattle.
SHG
I had bad coverage in Austin after about 1500 local time back in late June early July. No problems with satellites now in Kelowna. If I start to think about them I just drink more wine. Vacation is a grand concept.