一种高能效的无人机移动中继技术  

A Relaying Technique of Energy-Efficient Unmanned Aerial Vehicle

作　　者：黄陈浩 吉晓东[1,2] HUANG Chenhao;JI Xiaodong(School of Electronics and Information,Nantong University,Nantong 226019,China;Nantong Research Institute for Advanced Communication Technologies,Nantong 226019,China)

机构地区：[1]南通大学信息科学技术学院,江苏南通226019 [2]南通先进通信技术研究院,江苏南通226019

出　　处：《南通大学学报（自然科学版）》2021年第3期28-33,94,共7页Journal of Nantong University(Natural Science Edition)　

基　　金：国家自然科学基金面上项目(61871241);南通市基础科学研究计划项目(JC2019114);南通大学-南通智能信息技术联合研究中心开放课题(KFKT2017A03)。

摘　　要：针对固定翼无人机移动中继的能量效率优化问题,在直线轨道情况下,提出一种无人机移动中继能效优化飞行方案。假设无人机中继采用解码转发中继策略,且工作在时分双工模式下,在考虑初、末速度及加速度约束的情况下,将能效优化问题转化为两个子问题:接收数据部分无人机最优加速度问题和发送部分无人机最优加速度问题。提出一种基于Dinkelbach方法的迭代算法,对无人机中继加速度进行优化,实现对无人机飞行能量的管理,从而给出能效问题的最优解,并通过数值仿真验证算法的有效性。数值仿真结果表明:与传统无人机中继飞行方案相比,所提方案可显著提升其能效性能;随着源目的节点间的距离增加,能效性能优势越明显。In order to optimize the energy efficiency of a fixed-wing unmanned aerial vehicle(UAV)mobile relaying system,this paper proposes an energy-efficient flight scheme,where a straight trajectory is used,and the decode-and-forward(DF)strategy and the time-division duplex(TDD)mode are employed.With the data received and forwarded at the relay sideseparately,the energy efficient optimization problem is transformed into two sub-problems.An iteration algorithm using the Dinkelbach method optimizes the UAV relay acceleration and figures out the optimal solution of the energy efficiency problem.The effectiveness of the algorithm is verified through numerical simulations.Simulation results show that compared with the traditional UAV relay flight scheme,the proposed scheme can significantly improve the energy efficiency performance.As the distance between the source and destination nodes increases,the performance advantage becomes more evident.

关 键 词：无人机通信 时分双工中继 能效 变加速 分数规划 

分 类 号：TN929.532[电子电信—通信与信息系统]