mapping in rugged terrain?

I am trying to map portions of the Escondido Creek area in northern San Diego County -to get a "before" image before whatever rains may come this winter with El Nino, both to the creek and some of the trails in the Elfin Forest Recreational area. Here are some of my initial surveys: https://www.mapsmadeeasy.com/locations/detail/2eb3cee9f8ad42e9b5fc1920fc44c0ef/

The creek runs through some hills that are 800 feet high. This makes is challenging to map the trails on the higher elevations as they descend to the creek level. It also makes it challenging to define a survey flight plan from creek level that doesn't fly into the hills on either side.

Is there any way that I could get feedback from my IOS app when I enter a flight plan to show me the actual height above the features I am mapping? I'd like to know whether I would fly into the side of a hill, or don't give a hill enough clearance to get clean imaging data.

Tom 9 November, 2015 20:16

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We are working on adding terrain awareness but that won't be available for a while.

In the meantime, when mapping in uneven terrain, it is always best to start as high as possible. If you can start near the high point in your survey area you can set the overlap at 60-70%. Since the terrain is falling away from you, the overlap will be much higher in the lower areas.

If you must start at the bottom, you might want to map the higher portions at a much higher overlap settings since the actual overlap will decrease as the terrain climbs up towards the aircraft's cruising altitude.

Tudor 9 November, 2015 20:28

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6 komentar

This is also a problem for me. Working in NZ where most jobs have terrain challenges. It would be great if missions could follow ground surface rather than a constant height above launch.

Kelly 6 Desember, 2015 20:00 0 suara

Same issue here. Kelly's idea sounds great

Jos Bol 14 Januari, 2016 17:27 0 suara

We are working on trying to get terrain awareness released as part of the app but DJI keeps updating things and that eats a lot of developer time... There are a lot of things to account for in order to make it so people aren't losing their aircraft.

Tudor 14 Januari, 2016 17:38 0 suara

Tom, can you post a public link?

Luis Martinez 14 Januari, 2016 20:59 0 suara

As of today version 2.1.0 is available with the Terrain Awareness feature. This feature keeps the aircraft a uniform distance from the ground to keep the GSD and overlap consistent. It enables high quality mapping of areas that are not flat.

Please check out the following article:

http://support.dronesmadeeasy.com/hc/en-us/articles/211810943-Terrain-Awareness

Tudor 21 Juli, 2016 17:40 0 suara