关键词: 无人机, 定位精度, 测向交叉定位, 侦察航路, 自主修正

Abstract: Based on the characteristic of UAV reconnaissance and location mission, the calculation models of UAV reconnaissance region and DOA location error are established. The relationship between location precision and UAV navigation tendency, distance between target radar and UAV, location time is described. Then, the algorithm for UAV path autonomous correction based on location precision is given. The main idea is to timely and automatically correct the UAV path in order to improve the location precision, decrease the location time and avoid the threat area based on the obtained position information of target radar and the performance parameter of UAV in the process of flying. At last, the result of simulation shows that the location time is decreased and the location precision and the successful rate of location are improved.

Key words: Unmanned Aerial Vehicle（UAV）, location precision, Direction Of Arrival（DOA） location, reconnaissance path, autonomous correction