Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/57661
Title: Three-dimensional micromotion signature extraction of rotating targets in OFDM-LFM MIMO radar
Authors: Luo, Y.
Zhang, Q.
Qiu, C. 
Li, S.
Yeo, T.S. 
Issue Date: 2013
Source: Luo, Y.,Zhang, Q.,Qiu, C.,Li, S.,Yeo, T.S. (2013). Three-dimensional micromotion signature extraction of rotating targets in OFDM-LFM MIMO radar. Progress in Electromagnetics Research 140 : 733-759. ScholarBank@NUS Repository.
Abstract: In monostatic radars systems, only the micromotion signatures projected onto the radar line-of-sight (LOS) can be observed from echoes. As a result, the obtained micromotion signatures (e.g., the radius length of rotation) are sensitive to the radar LOS. In this paper, we propose a method for the accurate estimation of three-dimensional (3-D) micromotion signature with the orthogonal frequency division multiplexing - linear frequency modulation (OFDM-LFM) multi-input multi-output (MIMO) radar technique, which makes use of the advantages of the multi-view of MIMO radar systems and the broad bandwidth of the OFDM-LFM signals. In the proposed method, the Hough transform and Orthogonal Matching Pursuit (OMP) algorithm are introduced to extract the m-D curve features from echoes, and then the 3-D micromotion signatures of the rotating targets are obtained by solving nonlinear multivariable equation systems. The extracted 3-D micromotion signatures are no longer sensitive to the radar LOS, and can provide realistic feature information for target recognition. Simulations are given to validate the effectiveness of the proposed method.
Source Title: Progress in Electromagnetics Research
URI: http://scholarbank.nus.edu.sg/handle/10635/57661
ISSN: 10704698
Appears in Collections:Staff Publications

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