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

Due to its high compatibility with environment and weather conditions, radar imaging of terrains has always been considered for mapping and land surveying applications. Real aperture radar with rotary scanning can be a favorable option for radar imaging due to its large coverage area, simplicity, and portability. However, the wide beamwidth of the antenna used in these radars is not suitable for achieving high azimuth resolution demonstrating the necessity of using super-resolution algorithms. Moving the antenna phase center during rotation degrades the performance of these methods. To resolve this problem, the use of complex pattern based on the reflected wave from a point target in the investigation domain is proposed in this paper. The results obtained from the data acquired from an X-band radar show that the proposed method can increase the azimuth resolution of the real aperture radar by around six times as a rule of thumb.

Keywords

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References

 
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Radar
Volume 11, Issue 1
Serial number 29, spring and summer quarterly
August 2023

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History

  • Receive Date: 11 June 2023
  • Revise Date: 11 July 2023
  • Accept Date: 30 July 2023
  • Publish Date: 23 August 2023

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