Adaptive and efficient imaging processing algorithm for sliding spotlight SAR based on chirp scaling

Yunju Zhang; Xiaolan Qiu; Mingyang Shang

doi:10.1117/12.3036779

4 December 2024 Adaptive and efficient imaging processing algorithm for sliding spotlight SAR based on chirp scaling

Yunju Zhang, Xiaolan Qiu, Mingyang Shang

Author Affiliations +

Proceedings Volume 13283, Conference on Spectral Technology and Applications (CSTA 2024); 132832F (2024) https://doi.org/10.1117/12.3036779
Event: Conference on Spectral Technology and Applications (CSTA 2024), 2024, Dalian, China

Abstract

With the development of Synthetic Aperture Radar (SAR) technology, the sliding spotlight mode has become an important imaging mode for SAR due to its characteristics of balancing azimuth resolution and azimuth swath width. Based on the DCS algorithm, this paper utilizes the method similar to the SPECAN (SPECtral ANalysis) to solve the time domain aliasing phenomenon. By using this method, the problem of excessive zero-padding multiples in the DCS algorithm is avoided, computational resources are saved, and processing efficiency is improved. Furthermore, by comparing the time complexity of the two algorithms, this paper provides judgment conditions for the selection of algorithms, thus enabling the adaptive choice of a more efficient processing method. Finally, the paper validates the proposed method's efficacy through empirical tests using both simulated and real data.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yunju Zhang, Xiaolan Qiu, and Mingyang Shang "Adaptive and efficient imaging processing algorithm for sliding spotlight SAR based on chirp scaling", Proc. SPIE 13283, Conference on Spectral Technology and Applications (CSTA 2024), 132832F (4 December 2024); https://doi.org/10.1117/12.3036779

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KEYWORDS

Synthetic aperture radar

Aliasing

Beam steering

Doppler effect

Image processing

Fourier transforms

Simulations

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