Spaceborne Large-Squint Terrain-Matching Synthetic Aperture Radar: Concept and Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

This paper discusses a new spaceborne large-squint terrain-matching synthetic aperture radar (LSTM-SAR) to effectively image the terrains that do not spread along satellite orbit. Different from the traditional spaceborne SAR, the swath of the LSTM-SAR spreads along the target terrain, instead of the satellite orbit, to perform terrain-matched imaging with both high resolution and short data acquisition period. Aiming at giving a sketch of how the LSTM-SAR works, the paper focuses on discussing the following three main aspects: the data acquisition geometry, azimuth sampling manner and raw data focusing algorithm. Specifically, an optimum squint geometry is firstly suggested for two dimensional swath optimization; then two non-uniform azimuth sampling methods are discussed to avoid data loss induced by transmission blockage; lastly, a wide nonlinear chirp scaling based algorithm is discussed to focus the spatially variant spaceborne LSTM-SAR echo. The presented approach is validated via the computer simulations.

Original languageEnglish
Title of host publication2019 6th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728129129
DOIs
Publication statusPublished - Nov 2019
Event6th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2019 - Xiamen, China
Duration: 26 Nov 201929 Nov 2019

Publication series

Name2019 6th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2019

Conference

Conference6th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2019
Country/TerritoryChina
CityXiamen
Period26/11/1929/11/19

Keywords

  • LSTM-SAR
  • non-uniform azimuth sampling
  • nonlinear chirp scaling algorithm
  • optimum squint geometry

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Wang, Y., Li, Z., DIng, Z., & Zeng, T. (2019). Spaceborne Large-Squint Terrain-Matching Synthetic Aperture Radar: Concept and Technology. In 2019 6th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2019 Article 9048560 (2019 6th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APSAR46974.2019.9048560