Azimuth Resolution Enhancement of Real Aperture Radar Using the Accelerated Sparse-TSVD algorithm and Calibrated Radiation Pattern for Discrete and Distributed Targets

Document Type : Original Article

Authors

1 PhD student, Yazd University, Yazd, Iran

2 Assistant Professor, Yazd University, Yazd, Iran

3 Ph.D., Yazd University, Yazd, Iran

4 Master's degree, Yazd University, Yazd, Iran

Abstract

Real aperture radar (RAR) is appealing for land surveying due to its environmental resilience, wide coverage, simplicity, and portability. However, the relatively wide antenna beam results in limited azimuth resolution, constraining image clarity. While super-resolution algorithms can enhance resolution, they face significant challenges when the antenna phase center shifts during scanning. This paper proposes a novel approach that employs a complex antenna pattern based on point target reflections. The proposed method demonstrates an approximate six-fold improvement in azimuth resolution for X-band RAR data, effectively overcoming the limitations of conventional methods in scanning RAR systems.

Keywords

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References

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Radar
Volume 11, Issue 1
Serial number 29, spring and summer quarterly
August 2023
Pages 43-54

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History

  • Receive Date: 11 June 2023
  • Revise Date: 11 July 2023
  • Accept Date: 30 July 2023
  • Publish Date: 24 August 2023

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