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 High Resolution Wide Swath SAR System Review Using Multiple Sub-Apertures Structure 


Vol. 49,  No. 9, pp. 1216-1228, Sep.  2024
10.7840/kics.2024.49.9.1216


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  Abstract

Synthetic aperture radar (SAR) is a useful radar system that can form images regardless of weather conditions, but its inherent limitations make it impossible to achieve both high resolution and wide swath. Several modes have been developed to increase either resolution or swath, but these modes degrade the performance of the other. Therefore, to solve this problem, a SAR system with a modified antenna structure was studied. This system has a multiple sub-apertures structure using digital beamforming and can acquire multiple received signals for one transmit signal to obtain high resolution wide swath images without ambiguity. As a tutorial, this paper explains the image formation principles of SAR and the pulse repetition frequency range in which ambiguity does not occur, and shows that high resolution and wide swath cannot be achieved simultaneously. In addition, digital beamforming on receive technique using a multi-aperture structure is introduced as a technique to solve this problem, and the effectiveness of this technique is demonstrated through simulation results.

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[IEEE Style]

J. Yim, D. Kim, I. Ban, N. Lee, "High Resolution Wide Swath SAR System Review Using Multiple Sub-Apertures Structure," The Journal of Korean Institute of Communications and Information Sciences, vol. 49, no. 9, pp. 1216-1228, 2024. DOI: 10.7840/kics.2024.49.9.1216.

[ACM Style]

Jungbin Yim, Donghyun Kim, Inmo Ban, and Namyoon Lee. 2024. High Resolution Wide Swath SAR System Review Using Multiple Sub-Apertures Structure. The Journal of Korean Institute of Communications and Information Sciences, 49, 9, (2024), 1216-1228. DOI: 10.7840/kics.2024.49.9.1216.

[KICS Style]

Jungbin Yim, Donghyun Kim, Inmo Ban, Namyoon Lee, "High Resolution Wide Swath SAR System Review Using Multiple Sub-Apertures Structure," The Journal of Korean Institute of Communications and Information Sciences, vol. 49, no. 9, pp. 1216-1228, 9. 2024. (https://doi.org/10.7840/kics.2024.49.9.1216)
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pISSN : 1226 - 4717
eISSN : 2287 - 3880