So, this morning I set up a waypoint mission along a river for a couple hundred yards and then lifted the P4 up over the trees and circled back towards take off/start of the mission and ending it to form a sort of question mark shape. At the start of the mission, I was approximately 15 or 16ft off the water but 6ft above take off (on the bank) and the altitude reading was 6ft. At the end the mission, the altitude reading was 256ft. Don't know if it matters, but where I ended the mission, the land is about 40ft higher than the take off. I then flew back to the start of the mission (let the P4 fly itself about half way and then took over) and brought it down closer to the river as I approached the start. But at the point where the P4 looked like it was back to 15ft off the water, the altitude reading was 22ft instead of 6ft..... At that point I wasn't sure if the altitude reading was off, or if it had switched from altitude over take off to altitude over the land/water below, but even if it had, the 22ft still seemed too high. Unfortunately, being a newbie I didn't think to check the VPS. Anyhow, I decided not to run the mission because if the drone used 22ft as it's altitude when it was really at 15ft (over the water, 6ft over take off) and dropped to the start point altitude of 6ft, it would drop into the water.
Later today I was flying over a field (no mission) and lifting the P4 over the trees at the end. When I started over the field, it was 15ft off the ground (that was the reading and it appeared accurate) and I then brought it up to 200 or so as I cleared the trees. But when I brought the P4 back around and dropped back down to the field, at the point where the altitude reading was 25ft, the VPS indicated 6ft (I thought to look at it this time...) and visually the VPS was the correct reading......
Is the altitude reading really this variable and inaccurate, or is something else going on?
Thanks and sorry for the long post, but I wanted to include as much detail as possible.
Cheers,
Scott
Later today I was flying over a field (no mission) and lifting the P4 over the trees at the end. When I started over the field, it was 15ft off the ground (that was the reading and it appeared accurate) and I then brought it up to 200 or so as I cleared the trees. But when I brought the P4 back around and dropped back down to the field, at the point where the altitude reading was 25ft, the VPS indicated 6ft (I thought to look at it this time...) and visually the VPS was the correct reading......
Is the altitude reading really this variable and inaccurate, or is something else going on?
Thanks and sorry for the long post, but I wanted to include as much detail as possible.
Cheers,
Scott