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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2017-01-14
Enhanced Three-Dimensional Imaging for Multi-Circular Synthetic Aperture Radar
By
Lingjuan Yu,

    Dr. Lingjuan Yu

    Graduate University of the Chinese Academy of Sciences

    China

    Homepage

Yun Lin,

    Dr. Yun Lin

    Institute of Electronics, Chinese Academy of Sciences

    China

    Homepage

Qian Bao,

    Dr. Qian Bao

    Institute of Electronics, Chinese Academy of Sciences

    China

    Homepage

Wenjie Shen,

    Prof. Wenjie Shen

    North China University of Technology

    China

    Homepage

Yue Zhao,

    Dr. Yue Zhao

    Nationnal Key Laboratory of Science and Technology on Microwave Imaging

    Institute of Electronics, Chinese Academy of Science

    China

    Homepage

Wen Hong

    Dr. Wen Hong

    Nationnal Key Laboratory of Science and Technology on Microwave Imaging

    Institute of Electronics, Chinese Academy of Science

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 53, 77-87, 2017
doi:10.2528/PIERM16110305 | Google Scholar

Abstract
In multi-circular synthetic aperture radar (MCSAR) mode, resolution and sidelobes are two important parameters to consider when representing imaging quality, as in other SAR imaging modes. In this paper, three-dimensional (3-D) resolution and cone-shaped sidelobes of MCSAR are analyzed for a point target in the scene center under the Nyquist sampling criterion. The results of the analysis show that resolution can be improved, and cone-shaped sidelobes can be suppressed by increasing the system bandwidth and the length of synthetic aperture in the elevation direction. But this will make the system of acquiring data more difficult. It turns out that some digital signal processing techniques can enhance 3-D imaging quality of MCSAR. In this paper, a simple method based on spectrum extrapolation and interferometric phase masking is proposed to improve 3-D resolution and suppress cone-shaped sidelobes of MCSAR. Experimental results regarding a tank model in a microwave anechoic chamber demonstrate that this method is effective.
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Citation
Lingjuan Yu, Yun Lin, Qian Bao, Wenjie Shen, Yue Zhao, and Wen Hong, "Enhanced Three-Dimensional Imaging for Multi-Circular Synthetic Aperture Radar," Progress In Electromagnetics Research M, Vol. 53, 77-87, 2017.
doi:10.2528/PIERM16110305
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