Time Reversal ESPRIT Imaging with Frequency-domain Sampling of Single Target

[摘要] A time-reversal imaging method, based on frequency-domain data sampling and the estimation of signal parameters via rotational invariance techniques (ESPRIT), is proposed to obtain imaging with higher resolution in this paper. The proposed algorithm is obtained, which firstly applies the coarse and fine frequencies sampling to all received scatter signal, thus forming the plurality of frequency-frequency multistatic data matrices (FF-MDM); subsequently, the signal subspace is obtained through the application of singular value decomposition (SVD) to the FF-MDM; finally, the imaging pseudo-spectrum can be acquired by processing to the signal subspace with ESPRIT. The simulation results show that the proposed method has better resolution for imaging as compared with conventional imaging methods.

[发布机构] Department of Electric Engineering, Xi'An University of Technology, Xi'an; 710048, China^1;Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an; 710024, China^2

[效力级别] 无线电电子学 [学科分类] 计算机科学（综合）

[关键词] Conventional imaging;Estimation of signal parameters via rotational invariance techniques;Frequency domain sampling;Frequency-domain data;Higher resolution;Pseudo spectrum;Signal sub-space;Time reversal imaging