A novel range compression algorithm for resolution enhancement in GNSS-SARs

Yu Zheng, Yang Yang, Wu Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

Licensee MDPI, Basel, Switzerland. In this paper, a novel range compression algorithm for enhancing range resolutions of a passive Global Navigation Satellite System-based Synthetic Aperture Radar (GNSS-SAR) is proposed. In the proposed algorithm, within each azimuth bin, firstly range compression is carried out by correlating a reflected GNSS intermediate frequency (IF) signal with a synchronized direct GNSS base-band signal in the range domain. Thereafter, spectrum equalization is applied to the compressed results for suppressing side lobes to obtain a final range-compressed signal. Both theoretical analysis and simulation results have demonstrated that significant range resolution improvement in GNSS-SAR images can be achieved by the proposed range compression algorithm, compared to the conventional range compression algorithm.
Original languageEnglish
Article number1496
JournalSensors (Switzerland)
Volume17
Issue number7
DOIs
Publication statusPublished - 1 Jul 2017

Keywords

  • Global navigation satellite system
  • GNSS-SAR
  • Range compression
  • Range resolution
  • Synthetic aperture radar

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

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