PROBLEM TO BE SOLVED: To provide a flight altitude control device capable of automatically adjusting a flight altitude of an unmanned vehicle and appropriately photographing an object on the ground to be photographed. SOLUTION: A server device 1 calculates an area of a polygon formed by a marker...
Attached to the tweet was a PDF of "The CIA and the U-2 Program, 1954-1974," a report about the United States' manned U-2 spy plane written by agency historians and published in 1998. That document notes that "high-altitude testing of the U-2 soon led to an unexpected side effect...
Low airspace is an important natural resource, and this flight represents a significant exploration of the commercial operation of low-altitude travel. What kind of aerial transportation "new landscape" (调换位置)will emerge from the "new momentum" ...