无人机防相撞空中威胁态势的探测与告警研究

空中威胁态势探测与告警是无人机飞行防相撞预警的关键。为此,提出一种基于航迹预测的无人机防相撞空中威胁态势探测与告警方法。在该方法中,先采用滑动窗多项式拟合法对入侵机航迹进行动态预测,然后,在航迹预测基础上,利用无人机与入侵机飞行信息,建立针对入侵机的无人机动态避撞区,最后,结合静态保护区原理,对特定飞行场景下的无人机飞行冲突趋势、空中危险接近趋势和飞行碰撞趋势的探测与告警。仿真实例验证了所提出方法的有效性,也验证了其用于无人机飞行防相撞预警的可行性。

Research on Detection and Alarm of Air Threat Situation for UAV Collision Avoidance

The detection and alarm of air threat situation is the key to the early warning for UAV flight collision avoidance. For this reason, a detection and alarm method of air threat situation based on track prediction is proposed for UAV collision avoidance. In the method, firstly, the sliding window polynomial fitting method is used to dynamically predict the track of the intruder. Then, on the basis of the track prediction, using the flight information of UAV and intruder, the dynamic collision avoidance zone of UAV is established to the intruder. Finally, combined with static protection zone principle, the detection and alarm for flight conflict trend, nearSmidairScollision trend and flight collision trend between UAV and intruder is carried out in a specific flight scenario. Simulation results validate the effectiveness of the proposed method and the feasibility of application in the early warning for UAV flight collision avoidance.