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PIER PIER B PIER C PIER M PIER Letters
2013-07-02
Three-Dimensional Micromotion Signature Extraction of Rotating Targets in OFDM-LFM MIMO Radar
By
Ying Luo,

    Dr. Ying Luo

    Institute of Telecommunication Engineering

    Air Force Engineering University

    China

    Homepage

Qun Zhang,

    Prof. Qun Zhang

    Institute of Telecommunication Engineering

    AFEU

    China

    Homepage

Cheng-Wei Qiu,

    Prof. Cheng-Wei Qiu

    Department of Electrical and Computer Engineering

    National University of Singapore

    Singapore

    Homepage

Song Li,

    Dr. Song Li

    Institute of Air and Missile Defense, Air Force Engineering University

    China

    Homepage

Tat Yeo

    Professor Tat Yeo

    Department of Electrical and Computer Engineering

    National University of Singapore

    Singapore 119260

    Homepage

Progress In Electromagnetics Research, Vol. 140, 733-759, 2013
doi:10.2528/PIER13042202
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.
Citation
Ying Luo, Qun Zhang, Cheng-Wei Qiu, Song Li, and Tat Yeo, "Three-Dimensional Micromotion Signature Extraction of Rotating Targets in OFDM-LFM MIMO Radar," Progress In Electromagnetics Research, Vol. 140, 733-759, 2013.
doi:10.2528/PIER13042202
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