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2016-01-28
Target Detection in Low Grazing Angle with OFDM MIMO Radar
By
Yang Xia,

    Dr. Yang Xia

    National University of Defense Technology

    Changsha

    Homepage

Zhiyong Song,

    Dr. Zhiyong Song

    ATR Key Laboratory

    National University of Defense Technology

    China

    Homepage

Zaiqi Lu,

    Dr. Zaiqi Lu

    National University of Defense Technology

    China

    Homepage

Qiang Fu

    Dr. Qiang Fu

    National University of Defense Technology

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 46, 101-112, 2016
doi:10.2528/PIERM15121402 | Google Scholar

Abstract
In low grazing angle scenario, target detection performance is seriously deteriorated due to multipath effect. This paper deals with moving target detection in low grazing angle with orthogonal frequency division multiplexing (OFDM) multi-input multi-output (MIMO) radar. We show that the detection performance can be improved through utilizing the multipath effect. Realistic physical and statistical effects such as refraction of the lower atmosphere and the Earth's curvature are incorporated into the multipath propagation model. Then, we derive a generalized likelihood ratio test (GLRT) detector by taking advantage of the frequency diversity of OFDM and MIMO configuration. Based on the fact that the target responses resonate at different frequencies and statistical characteristics of the test, we propose an algorithm which adaptively allocates the transmitted energy to improve the detection performance. The effectiveness of the GLRT detector as well as the adaptive design method is demonstrated via numerical examples.
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Citation
Yang Xia, Zhiyong Song, Zaiqi Lu, and Qiang Fu, "Target Detection in Low Grazing Angle with OFDM MIMO Radar," Progress In Electromagnetics Research M, Vol. 46, 101-112, 2016.
doi:10.2528/PIERM15121402
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