共信道干扰环境下中继无人机的航迹优化方法  

Trajectory optimization method for relay UAV under co-channel interference environment

作　　者：刘海涛 黄金凤 刘晓畅 李冬霞 LIU Haitao;HUANG Jinfeng;LIU Xiaochang;LI Dongxia(College of Electronic Information and Automation,CAUC,Tianjin 300300,China)

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300

出　　处：《中国民航大学学报》2024年第2期30-37,共8页Journal of Civil Aviation University of China

基　　金：国家自然科学基金项目(62172418)。

摘　　要：为克服共信道干扰恶化无人机中继通信系统链路传输可靠性的问题,提出了中继无人机的航迹优化方法。首先,建立了点对点无人机中继通信系统模型,以基站节点解调器输入信干噪比(SINR,signal-to-interference-plus-noise ratio)最大化准则为基础,提出中继无人机的航迹优化方法,并通过粒子群优化算法获得中继无人机的最佳飞行航迹;随后,理论分析给出了无人机中继通信系统的链路中断概率和遍历容量;最后,仿真验证了所提出航迹优化方法的正确性。研究表明:所提方法可克服共信道干扰的影响,提高系统链路传输可靠性。A trajectory optimization method for relay unmanned aerial vehicle(UAV)is proposed to overcome the problem of co-channel interference deteriorating link transmission reliability of UAV relay communication system.First,the point-to-point model of UAV relay communication system is established,and based on the criterion of maximizing the input signal-to-interference-plus-noise ratio(SINR)of the base station node demodulator,a trajectory optimization method for relay UAV is proposed.The optimal flying trajectory of the relay UAV is obtained using the particle swarm optimization(PSO)algorithm,and the link outage probability and ergodic capacity of the UAV relay communication system are given via theoretical analysis.Finally,the correctness of the proposed trajectory optimization method is verified through simulation.The results show that the proposed method can overcome the effect of co-channel interference and improve the reliability of system link transmission reliability.

关 键 词：无人机 中继通信 共信道干扰 航迹优化 

分 类 号：V279[航空宇航科学与技术—飞行器设计] TN925[电子电信—通信与信息系统]