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A modified chirp-scaling algorithm for spaceborne squinted sliding spotlight SAR data processing

  • Beihang University

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

Abstract

A modified chirp scaling (CS) algorithm for processing spaceborne squinted sliding spotlight synthetic aperture radar (SAR) data is proposed in this paper. For squinted sliding spotlight mode, both the squint angle and azimuth beam steering make the spectral aliasing in azimuth. To solve this problem, the linear range cell migration correction (LRCM) and De-rotation are adopted firstly. Then a modified CS kernel is proposed to focus the data. What's more, the azimuth nonlinear CS (NCS) method is used to solve the limited depth-of-azimuth-focus (DOAF) problem caused by the first step. Finally, the geometric distortion is corrected in the range frequency domain. The effectiveness of the proposed algorithm is validated by simulation results.

Original languageEnglish
Title of host publicationProceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages459-461
Number of pages3
ISBN (Electronic)9781467372961
DOIs
StatePublished - 23 Oct 2015
Event5th IEEE Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015 - Singapore, Singapore
Duration: 1 Sep 20154 Sep 2015

Publication series

NameProceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015

Conference

Conference5th IEEE Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015
Country/TerritorySingapore
CitySingapore
Period1/09/154/09/15

Keywords

  • SAR
  • azimuth NCS
  • chirp scaling
  • imaging
  • squinted sliding spotlight mode

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