A Beam Optimization Technique for Space-borne Phased Array SAR

Wei, Yan; Hongxing, Dang; Xiaomin, Tan

doi:10.1109/ucmmt58116.2023.10310422

2023 16th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) 2023

DOI: 10.1109/ucmmt58116.2023.10310422

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A Beam Optimization Technique for Space-borne Phased Array SAR

Yan Wei,

Dang Hongxing,

Tan Xiaomin

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2024

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Design and On-Orbit Performance of Ku-Band Phased-Array Synthetic-Aperture Radar Payload System

Yan,

Tan,

et al. 2024

Sensors

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The current emphasis in the advancement of space-based synthetic-aperture radar (SAR) is on lightweight payloads under 100 kg with resolutions surpassing 1 m. This focus is directed toward meeting the launch criteria for multiple satellites on a single rocket and cutting costs. This article discusses the creation and progress of a Ku-band SAR payload for the Taijing-4(03) satellite, launched on 23 January 2024 and accompanied by four other satellites. The SAR payload design was customized to meet the demands of a micro-nano satellite platform, resulting in a lightweight, flat design weighing less than 80 kg, seamlessly integrated with the plate-shaped satellite platform. The article also introduces a beam optimization strategy for the phased array SAR antenna, significantly boosting the SAR system’s performance. The SAR payload provides various operating modes like slide-spot, strip, Scan 1, Scan 2, and others, with a maximum achievable resolution exceeding 1 m. Extensive in-orbit testing of the payload produced numerous high-quality SAR images with potential uses in emergency disaster mitigation, safeguarding ecosystems, monitoring forests, managing crops, tracking sea ice, and more.

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Design and On-Orbit Performance of Ku-Band Phased-Array Synthetic-Aperture Radar Payload System

Yan,

Tan,

et al. 2024

Sensors

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show abstract

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A Beam Optimization Technique for Space-borne Phased Array SAR

Cited by 1 publication

References 7 publications

Design and On-Orbit Performance of Ku-Band Phased-Array Synthetic-Aperture Radar Payload System

Design and On-Orbit Performance of Ku-Band Phased-Array Synthetic-Aperture Radar Payload System

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