Is it possible to generate an photogrammetric picture without a GPS connection? I'm actually looking to do some mapping with an UAV under an existing interchange. By the same time, we will unfortunately loose the GPS connection. If we equip and UAV with a Camera as Sony A6300, how will a software like Pix4D do to generate an accurate mapping? Is it possible?  We have a lot a ground control on site!


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Hi - I haven't used Pix4D but it should be possible to do what you describe as long as you have ground control points. The software can create the point cloud and the points on the ground can be used to translate the point cloud model coordinates to geographic coordinates. 

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