P4p and reach rs

[Airdog747 (Glen Ayres)]

I’m trying to see if the reach system will work with p4p or what uav will work best for mapping surveying. Thanks

[Simon_Allen]

See links below.
Depends on what degree of integration you want.

Drone surveying

I started with the MapPilot (MapsMadeEasy app) timings, but found they were off by quite a bit. 100-200 ms, This is a big improvement on the exif tag timings and a major improvement on the PIX4D capture photo timings, but not good enough. I now capture the photo trigger event on the drone and pass it to the reach rtk unit as a timing mark. I think that I have this accurate to about 30ms (15cm at 5m/s). The reach antenna is as you see it, this is vertically over the camera when the drone is flyin…

and

Linking DJI drone images to Reach RTK timing

There is a difference between UTC (Coordinated Universal Time) and GPS Time. http://tycho.usno.navy.mil/leapsec.html After December 2016, TAI is ahead of UTC by 37 seconds. TAI is ahead of GPS by 19 seconds. GPS is ahead of UTC by 18 seconds. Reach raw position logs are in GPST the PostProcessed position files from RTKLIB are in GPST be default unless you change the option on tab 2 of options to UTC! The DJI drone photos are tagged with UTC, flight logs from programs such as MapPilo…

and

Linking DJI drone images to Reach RTK timing

Hi Simon. With what accuracy did you end up? Vertical and horizontal? Just to understand correcly, both the phantom and Reach get their time from the satellite? (I thought the drone might sync with your device/phone/ipad`s time). But then the only problem is that the time “zones” differ from the 2 devices? How do you actually sync the photos and coordinates? I thought of writing a small program that will just run in a loop and add every photos name next to the coordinate in a txt file. That in t…