Computationally efficient MUSIC based DOA estimation algorithm for FMCW radar

作     者：Bakhtiar Ali Karim Haitham Kareem Ali Bakhtiar Ali Karim;Haitham Kareem Ali

作者机构：Department of Communication EngineeringSulaimani Polytechnic UniversitySulaymaniyah70-236Iraq 

出 版 物：《Journal of Electronic Science and Technology》 (电子科技学刊（英文版）)

年 卷 期：2023年第21卷第1期

页      面：46-64页

核心收录：

学科分类：07[理学] 08[工学] 070104[理学-应用数学] 081101[工学-控制理论与控制工程] 0701[理学-数学] 0811[工学-控制科学与工程] 

基　　金：Sulaimani Polytechnic University University of Leeds Higher Committee for Educational Development, HCED 

主　　题：Computational complexity Direction of arrival(DOA)estimation Frequency-modulated continuous-wave(FMCW)radar Subspace algorithms 

摘      要：This paper proposes low-cost yet high-accuracy direction of arrival(DOA)estimation for the automotive frequency-modulated continuous-wave(FMcW)*** existing subspace-based DOA estimation algorithms suffer fromeither high computational costs or low *** aim to solve such contradictory relation between complexity and accuracy by using randomizedmatrix ***,we apply an easily-interpretablerandomized low-rank approximation to the covariance matrix(CM)and R∈C^(M×M)throughthresketch maties in the fom of R≈OBQ^(H).Here the approximately compute its *** is,we first approximate matrix Q∈C^(M×z)contains the orthonormal basis for the range of the sketchmatrik C∈C^(M×z)cwe whichis etrated fom R using randomized unifom counsampling and B∈C^(z×z)is a weight-matrix reducing the approximation *** on such approximation,we are able to accelerate the subspacecomputation by the orders of the magnitude without compromising estimation ***,we drive a theoretical error bound for the suggested scheme to ensure the accuracy of the *** validated by the simulation results,the DOA estimation accuracy of the proposed algorithm,eficient multiple signal classification(E-MUSIC)s high,closely tracks standardMUSIC,and outperforms the well-known algorithms with tremendouslyreduced time ***,the devised method can realize high-resolutionreal-time target detection in the emerging multiple input and multiple output(MIMO)automotive radar systems.