首页|Coarse-fine joint target parameter estimation method based on AN-RSC in OFDM passive radar
Coarse-fine joint target parameter estimation method based on AN-RSC in OFDM passive radar
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维普
In this paper,we study the accuracy of delay-Doppler parameter estimation of targets in a passive radar using orthogo-nal frequency division multiplexing(OFDM)signal.A coarse-fine joint estimation method is proposed to achieve better estima-tion accuracy of target parameters without excessive computa-tional burden.Firstly,the modulation symbol domain(MSD)method is used to roughly estimate the delay and Doppler of tar-gets.Then,to obtain high-precision Doppler estimation,the atomic norm(AN)based on the multiple measurement vectors(MMV)model(MMV-AN)is used to manifest the signal sparsity in the continuous Doppler domain.At the same time,a reference signal compensation(RSC)method is presented to obtain high-precision delay estimation.Simulation results based on the OFDM signal show that the coarse-fine joint estimation method based on AN-RSC can obtain a more accurate estimation of tar-get parameters compared with other algorithms.In addition,the proposed method also possesses computational advantages compared with the joint parameter estimation.
passive radarorthogonal frequency division multi-plexing(OFDM)signalatomic norm(AN)parameter estimation
WANG Chujun、WAN Xianrong、YI Jianxin、CHENG Feng
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School of Electronic Information,Wuhan University,Wuhan 430072,China
国家自然科学基金国家自然科学基金Technological Innovation Project of Hubei Province of China湖北省自然科学基金
NETL
NSTL
万方数据
维普
