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A Novel GEO-Airplane Arbitrary Squint Bistatic SAR Imaging Method Using Spectrum Compression and Alignment

  • Beihang University

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

Abstract

Recently, GEO-Airplane Arbitrary Squint Bistatic SAR (GAS-BSAR) has become an attractive SAR imaging mode which could obtain Multi-Angle imformation from illuminated area. However, there is no excellent method to obtain high resolution SAR image from GAS-BSAR data. Fast Factorized BP (FFBP) is considered as an ideal methodology for configuration adaptability, but abundant interpolation operations extremely prolong FFBP imaging period. In this paper, a novel ground Cartesian back-projection (BP) algorithm is purposed for GAS-BSAR imaging. We decrease computation burden by subsitituding interpolation operations with Azimuth Zero-Padding Upsamping operations. Two-step spectrum conpression filters are designed to eliminate Azimuth spectrum aliasing before Azimuth upsamping. The purposed method named Bistatic Ground Cartesian BP (BGCBP) has been successfully applied to L-band GAS-BSAR simulation, where the efficiency improvement and imaging accuracy are demonstrated.

Original languageEnglish
Title of host publicationIGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages10958-10961
Number of pages4
ISBN (Electronic)9798350360325
DOIs
StatePublished - 2024
Event2024 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2024 - Athens, Greece
Duration: 7 Jul 202412 Jul 2024

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)

Conference

Conference2024 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2024
Country/TerritoryGreece
CityAthens
Period7/07/2412/07/24

Keywords

  • BGCBP
  • GAS-BSAR
  • accelerated BP
  • spectrum compression

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