Autofocusing of SAR images based on the product high-order ambiguity function

S. Barbarossa, Anna Scaglione

Research output: Chapter in Book/Report/Conference proceedingChapter

41 Scopus citations

Abstract

An autofocusing technique is proposed, based on the modelling of the instantaneous phase, induced by the relative radar/target motion, as a generic order polynomial and on the estimation of the polynomial coefficients by the so-called product high-order ambiguity function. The proposed estimation method is able to deal with multicomponent signals and is robust against model order mismatching, provided that the selected order is greater than the true order. The proposed method is compared with the phase gradient autofocusing method, and applications are presented of focusing of extended scenes and detection and imaging of moving targets.

Original languageEnglish (US)
Title of host publicationIEE Proceedings: Radar, Sonar and Navigation
Pages269-273
Number of pages5
Volume145
Edition5
StatePublished - 1998
Externally publishedYes

Keywords

  • Aperture radar
  • Autofociising
  • Polynomial modelling
  • Synthetic

ASJC Scopus subject areas

  • Computer Networks and Communications

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