TerraSAR-X and TanDEM-X After 13 Years of Joint SAR and DEM Mission

Bachmann, Markus; Bojarski, Allan; Böer, Johannes; Buckreuss, Stefan; Grigorov, Christo; Hajnsek, Irena; Kahle, Ralph; Kraus, Thomas; Klenk, Patrick; Müller, Kay; Steinbrecher, Ulrich; Schandri, Maximilian; Zink, Manfred

doi:10.1109/igarss52108.2023.10281959

IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium 2023

DOI: 10.1109/igarss52108.2023.10281959

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TerraSAR-X and TanDEM-X After 13 Years of Joint SAR and DEM Mission

Markus Bachmann,

Allan Bojarski,

Johannes Böer

et al.

Abstract: The German SAR satellites TerraSAR-X and TanDEM-X are in orbit since 2007 and 2010, respectively. This paper gives an overview about the challenges faced by such longenduring missions, recent measures taken to preserve the satellites and to continue the mission, and major lessons learned for future SAR missions.

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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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TerraSAR-X and TanDEM-X After 13 Years of Joint SAR and DEM Mission

Cited by 1 publication

References 12 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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