Comparison of linear array and arc array azimuth multichannel signal in near-space fast-speed SAR

Fan Liu; Wei Xu; Pingping Huang; Weixian Tan; Yaolong Qi

doi:10.1117/12.3012197

21 December 2023 Comparison of linear array and arc array azimuth multichannel signal in near-space fast-speed SAR

Fan Liu, Wei Xu, Pingping Huang, Weixian Tan, Yaolong Qi

Proceedings Volume 12970, Fourth International Conference on Signal Processing and Computer Science (SPCS 2023); 129701X (2023) https://doi.org/10.1117/12.3012197
Event: Fourth International Conference on Signal Processing and Computer Science (SPCS 2023), 2023, Guilin, China

Abstract

In near-space fast-speed synthetic aperture radar (SAR), the azimuth multichannel technology is usually required to achieve high resolution wide swath (HRWS) imaging. Compared with traditional linear array SAR (LA-SAR), arc array SAR (AA-SAR) is with attractive omnidirectional and real-time dynamic imaging capacities. In the paper, the azimuth multichannel signal model of LA-SAR and AA-SAR are both established and compared, compared with the echo model of linear array SAR, the echo model of arc array SAR has an additional phase, which leads to the imbalance of multichannel. Directly using the linear array azimuth multi-channel reconstruction method, the imaging results will appear false targets. Finally, the inference is verified by point target simulation.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Fan Liu, Wei Xu, Pingping Huang, Weixian Tan, and Yaolong Qi "Comparison of linear array and arc array azimuth multichannel signal in near-space fast-speed SAR", Proc. SPIE 12970, Fourth International Conference on Signal Processing and Computer Science (SPCS 2023), 129701X (21 December 2023); https://doi.org/10.1117/12.3012197

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KEYWORDS

Synthetic aperture radar

Imaging arrays

Imaging systems

Antennas

Multichannel imaging systems

Error analysis

Signal processing

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