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|Title:||Three-dimensional micromotion signature extraction of rotating targets in OFDM-LFM MIMO radar|
|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|
|Appears in Collections:||Staff Publications|
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