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Imaging and MTI processing based on dual-frequencies dual-apertures spaceborne SAR

  • Published:
Journal of Electronics (China)

Abstract

Based on dual-frequencies dual-apertures spaceborne SAR (Synthetic Aperture Radar), a new SAR system with four receiving channels and two operation modes is presented in this paper. SAR imaging and Moving Target Indication (MTI) are studied in this system. High resolution imaging with wide swath is implemented by the Mode I, and MTI is completed by the Mode II. High azimuth resolution is achieved by the Displaced Phase Center (DPC) multibeam technique. And the Coherent Accumulation (CA) method, which combines dual channels data of different carrier frequency, is used to enhance the range resolution. For the data of different carrier frequency, the two aperture interferometric processing is executed to implement clutter cancellation, respectively. And the couple of clutter suppressed data are employed to implement Dual Carrier Frequency Conjugate Processing (DCFCP), then both slow and fast moving targets detection can be completed, followed by moving target imaging. The simulation results show the validity of the signal processing method of this new SAR system.

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Authors and Affiliations

  1. National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China

    Jianfeng Yin, Daojing Li & Yirong Wu

  2. Graduate University of Chinese Academy of Sciences, Beijing, 100190, China

    Jianfeng Yin

Authors
  1. Jianfeng Yin
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  2. Daojing Li
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  3. Yirong Wu
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Corresponding author

Correspondence to Jianfeng Yin.

Additional information

Supported by the National Natural Science Foundation of China (NSFC) (No.60772103), and China National Key Laboratory of Microwave Imaging Technology Foundation (No.9140C1903050804).

Communication author: Yin Jianfeng, born in 1981, female, Ph.D. candidate.

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Yin, J., Li, D. & Wu, Y. Imaging and MTI processing based on dual-frequencies dual-apertures spaceborne SAR. J. Electron.(China) 26, 38–44 (2009). https://doi.org/10.1007/s11767-007-0175-0

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  • DOI: https://doi.org/10.1007/s11767-007-0175-0

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