New User - Dronelink Questions - Mavic 3 Enterprise
Hi all,
Our business is a relatively new user of Dronelink and we have recently come across some aspects of the software which we would like to know more about:
- We recently undertook several missions set to take images according to horizontal and vertical overlap, rather than time or distance. The flight type was 'facade' as we were using a ring-shaped flight pattern, which created a number of rings, moving from bottom to top, around a tall tower, using high vertical/horizontal overlap to capture the four facades along the tower's height. We repeated this flight type for four tall towers of approximately 70m height each. The images were completed successfully, however, we noticed that the UAV was not completing a final ring of images at the uppermost altitude as we expected it to on 3/4 of the towers - i.e., we had set a maximum altitude of 90m, but the flight plan ended (not aborted or failed, just ended) at ~85m on 3/4 towers, while ending at the expected 90m on 1 tower. Could you give any idea of why this may have happened?
- What are the implications of using AGL or ATL settings for a flight. For example, we would eventually like to be able to set the drone to fly over an area while staying at a consistent distance from the survey area, including over any features such as buildings. I assume that the base elevation map used for AGL is something like an averaged DEM from satellite imagery and so would not be able to be used for confidently flying over features like buildings or even structures akin to large pylons, while staying at a consistent distance from them? Is that correct and where could we view the elevation map used for AGL/terrain follow flights.
- Does Dronelink or any of its flight settings have any influence on the values stored in the EXIF for the JPEG images? More specifically, we are finding that the altitude stored in the EXIF data seems to be wrong, however when in live flight, the altitude reading on the RC controller seems to be correct.
- Are there any obstacle-alerting or automated obstacle avoidance features that Dronelink provides, and if so, how do you access them. We recently flew very close to a structure and noticed that there did not seem to be an automated avoidance or warning capability where there had been with a previous service provider.
We are flying a DJI Mavic 3 Enterprise.
Thank you.
Comments
5 comments
1) Hard to say without setting the mission plan. Can you please share it?
2) The elevation data is ground elevation only and it comes from ESRI. The source depends on where you are in the world: https://www.esri.com/arcgis-blog/products/analytics/analytics/introducing-esris-world-elevation-services/
3) No, this is all handled in DJI’s firmware and we have no control over it.
4) On obstacle avoidance for the M3E: https://support.dronelink.com/hc/en-us/articles/26107953807507-Obstacle-Avoidance-Support-and-Commands
Thanks for your answers Jim and apologies for the delay in reply.
I have screenshotted and attached the mission parameters, keen to hear your thoughts. As you can see, there is 1 mission for each building (I have included 2 screenshots per mission in order to show all facade mission parameters), and each mission consists of a facade and orbit flight.
The mission with the aforementioned issue was the facade for 'Topmast Point' (last set of images).
Cheers
Can you share the actual mission plan? https://support.dronelink.com/hc/en-us/articles/7912083943059-Sharing-Mission-Plans
This is the one for the mission with the error...
https://app.dronelink.com/adam-bray/point-blocks/plan/Am0wLM5BVbM5mie8aHAz/6Jg724ipFA7qT1yLnHNV
This appears to be an issue with some facades, so if you see this happening in the mission preview, the work-around is to bump up the final altitude to get the coverage you want until we can figure out a fix.
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