Far-Field Radar Cross Section Determination From Near-Field 3-D Synthetic Aperture Imaging With Arbitrary Antenna-Scanning Surfaces

Takuma Watanabe*, Hiroyoshi Yamada

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

In this study, we propose a generalized algorithm for far-field radar cross section determination by using 3-D synthetic aperture imaging with arbitrary antenna-scanning surfaces. This method belongs to a class of techniques called image-based near-field-to-far-field transformation. The previous image-based approaches have been formulated based on a specific antenna-scanning trajectory or surface, such as a line, plane, circle, cylinder, and sphere; the majority of these approaches consider 2-D radar images to determine the azimuth radar cross section. We generalize the conventional image-based technique to accommodate an arbitrary antenna-scanning surface and consider a 3-D radar image for radar cross section prediction in both the azimuth and zenith directions. We validate the proposed algorithm by performing numerical simulations and anechoic chamber measurements.

Original languageEnglish
Pages (from-to)5831-5840
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Volume70
Issue number7
DOIs
StatePublished - 2022/07/01

Keywords

  • Image reconstruction
  • near-field-to-fa-field transformation (NFFFT)
  • radar cross section (RCS)
  • synthetic aperture imaging

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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