Volume 6 Issue 4
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Article Navigation >  Journal of Radars  > 2017  >  6(4): 376-387
YANG Lichao, GAO Yuexin, XING Mengdao, et al. High resolution microwave photonics radar real-time imaging based on generalized keystone and frequency scaling[J]. Journal of Radars, 2019, 8(2): 215–223. doi: 10.12000/JR18120
Citation: Ye Kai, Yu Weidong, Wang Wei. Investigation on Processing Scheme for MIMO SAR with STSO Chirp Waveforms[J]. Journal of Radars, 2017, 6(4): 376-387. doi: 10.12000/JR17048
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Investigation on Processing Scheme for MIMO SAR with STSO Chirp Waveforms

DOI: 10.12000/JR17048
  • ①.

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

  • ②.

    University of Chinese Academy of Sciences, Beijing 100049, China

Funds:  The National Ministries Foundation
  • Received Date: 2017-04-19
  • Rev Recd Date: 2017-06-07
  • Publish Date: 2017-08-28
    Abstract
  • This study presents a novel processing scheme for Multiple-Input Multiple-Output (MIMO) Synthetic Aperture Radar (SAR) system with Short-Term Shift-Orthogonal (STSO) chirp waveforms to enhance its high-resolution wide-swath mapping capability. Taking advantage of multi-beam digital beamforming techniques in elevation, the STSO chirp waveforms can be efficiently separated from mixed echo signals. According to the geometry model and the antenna architecture of MIMO SAR system, the modified multichannel reconstruction matrix is used to reconstruct the separated signals in azimuth. In addition, the reconstruction data can be imaged via conventional SAR algorithm. Simulation experiments are conducted on both point targets and distributed targets, the results of which indicate that the proposed scheme can effectively suppress the mutual interferences between the STSO waveforms and that it has good imaging performance.

     

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    • References(18)
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