基于用户最大接收功率无人机应急通信航迹规划

Trace Programming for UAV based on Maximum User Receiving Power for Emergency Communication

针对甘孜-康定地震带无人机应急通信中,沿着长条形区域飞行的场景,对无人机的航迹进行规划,使得无人机能够在给定服务时长的前提下,在保证不偏离长条形区域、不超过最大时速的前提下,保证其覆盖范围内的用户接收到的总功率最大。在无人机的航迹规划中,不考虑无人机掉头造成的影响。为此,我们在确定了用户的位置以后,将无人机服务的时间区间分割为足够长的小段,每一个小段,建立约束优化问题模型,求解无人机的最优位置。其中,优化目标是无人机的传输的信号功率到达各个用户后,用户接收到的信号的功率和最大。相应的约束条件是无人机的飞行速度低于约束值,且无人机的位置需要在长条形区域内。仿真结果表明,随着无人机服务时长提供能力的加强,无人机可以飞行更远的距离。整体而言,当无人机到达受灾区域后,在为受灾地区提供服务时,无人机的飞行速度都不会低于10 m/s。在大部分时间,无人机到达灾区为受灾区域提供服务时,无人机的飞行速率大约为20 m/s。

In this paper,we have designed the trace of unmanned aerial vehicle(UAV)in the scene of flying long-trip area for emergency communication in Garze-Kangding seismotectonic Zone.The UAV should ensure that the total power received by users within its coverage is maximum without deviating from the road and exceeding the maximum speed under the premise of a given service duration.During the trace programming,we ignore the influence of the reverse of the UAV.The simulation results show that when we provide more service time for the UAV,the UAV can fly longer in the long-trip area.The flight speed of UAV is not less than 10 m/s.In most of the time,the flight speed of UAV is about 20 m/s.