UAV Ground Control Points (GCPs)/Disposable Aerial Targets for Aerial Mapping & Drone Surveying (100 Pack)

These are perfect for surveying work, especially with drones. They are highly visible and working with drones especially. We have been using them for months; now that we can get them through Amazon, it has been useful since they get here faster. Highly recommend it for survey work.

it is nice that you can set it and forget it. However, the color choice doesn't work in a few situations.You always have to pay attention to your exposure. But because both colors are bright the target can wash out very easily.The green is useless in a lot of situations. I think a bold blue would have been better.

blazing fast shipping. color scheme is great! good separation on the mark. combine with black-painted shiner for higher altitude. panels have more reflectivity than I had hoped for, but even if heavily washed out, you can still make out magenta meeting magenta.

They are very visible from any flight height. They are biodegradable.

From customer photos, it looks like the product was originally sky blue/white, but now is green/magenta. They are pretty small for higher flights (at 200 m, they render as 7 pixels x 7 pixels on my DJI Air 2S). But the real problem is the colors. The magenta is easily confused with the chromatic aberration in my lens, and the green renders as white in my sensor. Also, they tend to fold over in the wind unless you weight every corner. The price is nice, as I am working in Mexico, where people tend to steal your targets.The image (added after this review was first published) shows the card as photographed from a DJI Air 2S, from 100 m altitude. The scale bar is 1 m. The black spots in the upper right and lower left are rocks that I used to weight down the corners.

As advertised! These are perfect for your gps based drone surveys.

It served it’s purpose

Happy with the product so far.