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Synthetic aperture radar tomography sampling criteria and three-dimensional range migration algorithm with elevation digital spotlighting

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Abstract

Based on the general geometric model of multi-baseline Synthetic Aperture Radar Tomography (TomoSAR), the three-dimensional (3-D) sampling criteria, the analytic expression of the 3-D Point Spread Function (PSF) and the 3-D resolution are derived in the 3-D wavenumber domain in this paper. Considering the relationship between the observation geometry and the size of illuminated scenario, a 3-D Range Migration Algorithm with Elevation Digital Spotlighting (RMA-EDS) is proposed. With this algorithm 3-D images of the area of interest can be directly and accurately reconstructed in the 3-D space avoiding the complex operations of 3-D geometric correction. Finally, theoretical analyses and simulation results are presented to demonstrate the shift-varying property of the 3-D PSF and the spatial-varying property of the 3-D resolution and to demonstrate the validity of the 3-D RMA-EDS.

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Authors and Affiliations

  1. State Key Laboratory of Microwave Imaging Technology, Beijing, 100190, China

    WeiXian Tan, Wen Hong, YanPing Wang, Yun Lin & YiRong Wu

  2. Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China

    WeiXian Tan, Wen Hong, YanPing Wang, Yun Lin & YiRong Wu

  3. Graduate School, Chinese Academy of Sciences, Beijing, 100190, China

    WeiXian Tan & Yun Lin

Authors
  1. WeiXian Tan
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  2. Wen Hong
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  3. YanPing Wang
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  4. Yun Lin
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  5. YiRong Wu
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Correspondence to WeiXian Tan.

Additional information

Supported by the National Science Fund for Distinguished Young Scholars (Grant No. 60725103), the National Natural Science Foundation of China (Grant No. 60602015), the National Key Laboratory Foundation (Grant No. 9140C1903030603) and the Knowledge Innovation Program of Chinese Academy of Sciences (Grant No. 07QNCX-1154)

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Tan, W., Hong, W., Wang, Y. et al. Synthetic aperture radar tomography sampling criteria and three-dimensional range migration algorithm with elevation digital spotlighting. Sci. China Ser. F-Inf. Sci. 52, 100–114 (2009). https://doi.org/10.1007/s11432-009-0003-2

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  • DOI: https://doi.org/10.1007/s11432-009-0003-2

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