gary h
lvl.2
Flight distance : 4833747 ft
United States
Offline
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My GPS lock is now slower than before the update. On a cold GPS start, requiring a fresh download of GPS ephemeris/almanac data from the satellites, It now takes 5--10 minutes to establish a Home Point. Since the update, my longest time to establish a Home Point yesterday was 11 minutes. This morning, on a cold start, it proceeded like this:
First Minute -- 4 Sats Acquired
Second Minute -- 6 Sats Acquired
Third Minute -- 7 Sats Acquired
Fourth Minute -- 8 Sats Acquired
Fifth Minute -- 11 Sats Acquired and Home Point established.
After letting the drone and controller sit idle and off for 30 minutes, the procedure to "Home Point established," has been taking anywhere from 2--3 minutes, beginning counting the minutes from when the drone connects to the controller and reports 0 satellites acquired.
As for the obstacle-avoidance-sensor problem, that problem seems to be about the same as before the update. Upon first launching the drone after a period of 30-60 minutes of being turned off, during the first 30 seconds of flight, with the throttle set to maximum, the drone flies between 1--5 mph. During this time, with the sensors set to "BRAKE," (as opposed to BYPASS), the drone occasionally slows/stops erratically. Then all of a sudden, the drone accelerates to the proper maximum speed, and then appears to fly normally for the rest of the flight. This problem only occurs when the obstacle avoidance sensors are enabled.
I'd be interested to hear how others are experiencing the GPS slow-acquisition, and obstacle-avoidance-sensor problems after the January 2022 update. I don't seem to be experiencing the other problems such as the communications link disruption, and the slanted horizon problem. I live in an area of hills all around me so at least I haven't noticed a crooked horizon.
UPDATE to original message:
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To those who suggest that I have a geographical problem do to hills, actually, its just that I can't judge whether or not I have a level horizon, because my horizon is not flat. The hills I mention are not that close to me. They just prevent me from judging whether or not the horizon is level. The hills and mountains only occlude about 0.5 to 1.0 degree of the sky, and are all from 30 to 50 miles away. My satellite problem definitely resides with the Mavic 3. I also have a Mavic Pro 2, an Air 2S, and a Mini 2. All of these drones receive a Home Point lock within about 30 seconds from powering the drone on. I have compared these drones directly against the Mavic 3, and the other drones will usually show 12--14 satellites on the controller before the Mavic 3 can even show one satellite as being locked on. If I power up these other drones in the house, they receive a Home Point lock before I can walk them out to the deck, which is only 10 feet away. These other drones also achieve this GPS lock in the house with four feet of snow on the roof! Another point to consider is that I live in Alaska at 65 degrees North latitude. Since GPS satellites are in Polar orbits around the Earth, and not geosynchronous orbits around the Equator, all the GPS satellites' paths converge close to the North Pole. Therefore, we in Alaska see many more satelllites at any given time than those located in the Lower-48 states. The most satellites I've locked into on the Mavic 3 at any one time is 29.
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