基于Toeplitz矩阵重构的无人机相干信号DOA估计算法  

UAV Coherent Signal DOA Estimation Algorithm Based on Toeplitz Matrix Reconstruction

作　　者：曹聪慧 兰强 侯群[1] CAO Cong-hui;LAN Qiang;HOU Qun(School of Artificial Intelligence,Jianghan University,Wuhan 430056,Hubei;Dongfeng Motor Finance Co.,Ltd.,Wuhan 430056,Hubei)

机构地区：[1]江汉大学人工智能学院,人工智能研究院,湖北武汉430056 [2]东风汽车财务有限公司,湖北武汉430056

出　　处：《电脑与电信》2021年第12期21-24,共4页Computer & Telecommunication

基　　金：湖北省教育厅科学研究计划指导性项目“基于深度学习的无人机射频检测算法研究”,项目编号:B2020224;江汉大学高层次人才科研启动经费“基于小波神经网络的新型低空辐射源射频探测技术研究”,项目编号:2019032;武汉研究院开放性课题“后疫情时代基于大数据的武汉市舆情分析研究”,项目编号:IWHS20212076。

摘　　要：针对实时监管无人机的需求设计了基于Toeplitz矩阵重构的二维相干DOA估计算法,建立了虚拟线阵模型来接收无人机相干信号,通过对协方差矩阵进行矩阵重构来实现信号解相干,构建了Toeplitz矩阵,通过计算空间谱实现对无人机信号的二维DOA估计,仿真分析表明本文方法的DOA估计准确率较高,性能较好。In this paper,the two-dimensional coherent DOA estimation algorithm based on the TOEPLITZ matrix reconstruction is designed for real-time regulatory drones,and the virtual line array model is established to receive the drone coherent signal,and the signal is realized by matrixing the covariance matrix.The Toeplitz matrix is built,and the two-dimensional DOA estimation for drone signals is achieved by calculating spatial spectrum.Simulation analysis shows that the DOA estimation accuracy rate of this paper is high and better performance.

关 键 词：无人机 DOA估计 Toeplitz矩阵重构 相干信号 

分 类 号：TN911.7[电子电信—通信与信息系统]