What is the main threshold of the aerial photography industry?

Private enterprises do face many difficulties in operating aerial photogrammetry, mainly in the following aspects:

(1) The airspace coordination is difficult, and the kj activity is frequent;

(2) In addition to kj activities, there is interference from civil aviation. There are many civil aviation flights over the city, leaving short airspace for aerial photogrammetry;

(3) The weather has a great influence. Whether the aerial photogrammetry task can be carried out mainly depends on the good weather;

(4) The aerial photography cost of large aircraft is high;