Low-spatial-domain collision avoidance system and method for unmanned aerial vehicle

Abstract

The invention discloses a low-spatial-domain collision avoidance system and method for an unmanned aerial vehicle. The method comprises: a flight data recording module collects unmanned aerial vehicle flight information and a wireless data transmission module transmits related data of flight information of the unmanned aerial vehicle to a ground unmanned aerial vehicle monitoring system, thereby calculating a flight path of the unmanned aerial vehicle; and the ground unmanned aerial vehicle monitoring system carries out unmanned aerial vehicle flight information data processing by using a collision avoidance algorithm and informs an unmanned aerial vehicle operator of state information of the unmanned aerial vehicle in real time. According to the invention, three-dimensional spatial Cartesian coordinates of all unmanned aerial vehicles are measured by a GPS; fitting of flight paths of the unmanned aerial vehicles within a current period is carried out based on a cubic spline curve fitting method; whether a closest distance of flight path curves between the unmanned aerial vehicles is smaller than a security distance is calculated to determine whether a collision will occur; and flight operators of the unmanned aerial vehicles are informed of a collision result timely to change flight directions and speeds of the unmanned aerial vehicles timely.

Description

technical field [0001] The invention relates to a low-airspace drone, in particular to a conflict avoidance system and method based on a low-airspace drone. Background technique [0002] With the continuous development and application of UAV technology, more and more small fixed-wing or rotary-wing UAVs are applied to our daily life. We can use these small drones to carry cameras to take images in the sky, survey terrain, and as plant protection aircraft to spray pesticides on crops and so on. But this will cause a large number of drones to appear in the low airspace, so that during the flight, collisions between drones may occur, causing safety accidents. Therefore, when UAVs are flying in low airspace, how to avoid conflicts between UAVs and prevent collisions becomes more and more important. The traditional UAV conflict avoidance method is not only inefficient, but also often causes collisions between UAVs and safety accidents because the UAV operators cannot respond in...

AI Technical Summary

Problems solved by technology

However, in this way, it is inevitable that due to the deviation of the operator's viewing angle or the flying speed of the drone is too fast,

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