Design and on-orbit performance of Ku-band SAR payload system

Wei Yan; Xiaomin Tan; Jiang Wu; Mingze Yuan; Hongxing Dang; Wujun Chang

doi:10.1117/12.3041698

11 September 2024 Design and on-orbit performance of Ku-band SAR payload system

Wei Yan, Xiaomin Tan, Jiang Wu, Mingze Yuan, Hongxing Dang, Wujun Chang

Proceedings Volume 13253, Fourth International Conference on Signal Image Processing and Communication (ICSIPC 2024); 132531T (2024) https://doi.org/10.1117/12.3041698
Event: 4th International Conference on Signal Image Processing and Communication, 2024, Xi'an, China

Abstract

The current focus in the development of space-based synthetic aperture radar (SAR) is on compact payloads weighing less than 100kg, capable of achieving resolutions greater than 1m. This concentration is aimed at satisfying the requirements for launching multiple satellites on a single rocket and reducing expenses. This paper explores the development and advancement of a Ku-band SAR payload for the Taijing-4(03) Satellite, which was launched on January 23, 2024 alongside four other satellites. The design of the SAR payload was tailored to fit the specifications of a micro-nano satellite platform, resulting in a lightweight, sleek layout weighing under 80kg and seamlessly integrated with the plate-shaped satellite platform. The article also presents a strategy for optimizing the beams of the phased array SAR antenna, significantly enhancing the performance of the SAR system. The SAR payload offers a variety of operational modes such as slide-spot, strip, scan 1, scan 2, and more, with a maximum achievable resolution exceeding 1m. Extensive testing of the payload in orbit yielded numerous high-quality SAR images that could be utilized for emergency disaster response, ecosystem preservation, forest monitoring, crop management, sea ice tracking, and other applications.

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

Citation Download Citation

Wei Yan, Xiaomin Tan, Jiang Wu, Mingze Yuan, Hongxing Dang, and Wujun Chang "Design and on-orbit performance of Ku-band SAR payload system", Proc. SPIE 13253, Fourth International Conference on Signal Image Processing and Communication (ICSIPC 2024), 132531T (11 September 2024); https://doi.org/10.1117/12.3041698

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KEYWORDS

Synthetic aperture radar

Satellites

Ku band

Antennas

Design

Signal processing

Phased arrays

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