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ISAR Image Formation of Maneuvering Target via Exploiting the Fractional Fourier Transformation

  • Yong Wang*
  • , Jiajia Rong
  • *Corresponding author for this work
  • Harbin Institute of Technology

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

Abstract

Inverse synthetic aperture radar (ISAR) imaging based on the range-Doppler (RD) imaging algorithm has been proved to be effective at the case of the target moves smoothly. However, for the maneuvering target, due to the Doppler frequency of the received signals, which can be regarded approximately as chirp signals, is time-varying, the conventional RD imaging algorithm is not appropriate anymore. In consideration of the fractional Fourier transform (FRFT) having an advantage in concentrating the energy of the chirp signal, a novel technique of ISAR image formation of the maneuvering target through exploiting the FRFT is proposed. Different from the traditional Wigner–Ville distribution (WVD) and other bilinear time–frequency distributions, the FRFT is a linear operator so that it cannot be affected by the cross-terms for the multicomponent signals. The validity of the introduced method is validated with the results of ISAR imaging for simulated and real data.

Original languageEnglish
Title of host publicationCommunications, Signal Processing, and Systems - Proceedings of the 2018 CSPS Volume II
Subtitle of host publicationSignal Processing
EditorsQilian Liang, Xin Liu, Zhenyu Na, Wei Wang, Jiasong Mu, Baoju Zhang
PublisherSpringer Verlag
Pages676-684
Number of pages9
ISBN (Print)9789811365034
DOIs
StatePublished - 2020
EventInternational Conference on Communications, Signal Processing, and Systems, CSPS 2018 - Dalian, China
Duration: 14 Jul 201816 Jul 2018

Publication series

NameLecture Notes in Electrical Engineering
Volume516
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

ConferenceInternational Conference on Communications, Signal Processing, and Systems, CSPS 2018
Country/TerritoryChina
CityDalian
Period14/07/1816/07/18

Keywords

  • CLEAN technique
  • Fractional Fourier transform (FRFT)
  • Inverse synthetic aperture radar (ISAR)
  • Maneuvering target

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