Unambiguous Recovery of Multistatic SAR Datafor Nonzero Cross Track Baseline Case

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Abstract

A wide-swath synthetic aperture radar (SAR) image is known to be achievable by merging multistatic aliased data that is collected with an appropriate along-track displacement. However, in terms of both flexibility requirements like potentiality of both along-track and cross-track (XT) interferometry and design requirements like orbital safety, etc., a XT baseline is not only demanded but also unavoidable. In this work, a method is proposed in order to merge SAR data to recover the Doppler spectrum unambiguously for the nonzero XT baseline case. The algorithm is compared and validated by simulating an azimuth invariant multistatic SAR satellite constellation. The results are promising in terms of dealing with XT baselines.
Original languageEnglish
Number of pages5
JournalIEEE Geoscience and Remote Sensing Letters
DOIs
Publication statusE-pub ahead of print - 2020

Keywords

  • Bistatic synthetic aperture radar (SAR)
  • multistatic SAR image processing
  • radar signal processing
  • SAR constellation

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