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ISAR imaging of non-cooperative objects with non-uniform rotational motion

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

Details

Original languageEnglish
Title of host publication2016 IEEE Radar Conference (RadarConf)
PublisherIEEE
ISBN (Print)978-1-5090-0863-6
DOIs
Publication statusPublished - May 2016
Publication typeA4 Article in a conference publication
EventIEEE Radar Conference -
Duration: 1 Jan 1900 → …

Publication series

Name
ISSN (Electronic)2375-5318

Conference

ConferenceIEEE Radar Conference
Period1/01/00 → …

Abstract

In this paper, we propose data-driven optimization techniques for enhancing the ISAR image reconstruction process. We utilize keystone formatting to compensate for the range cell migration caused by the rotational motion and the well-established technique based on time-frequency signal analysis for the ISAR image reconstruction. The proposed optimization method for the keystone formatting determines the optimal slow-time window for the operation by minimizing a loss function depending on the contrast of the sum envelope of the range compressed signal. The optimization procedure proposed for the Cohen's class time-frequency representation determines an optimal kernel function by maximizing the contrast of the intensity normalized ISAR image function. In addition, we utilize the time-frequency reassignment method to enhance the contrast of the ISAR image. The algorithms are illustrated with a numerical example, which indicates that our methodology can be used to increase the performance of the non-cooperative ISAR imaging process.

Keywords

  • inverse synthetic aperture radar, radar imaging, radar signal processing

Publication forum classification

Field of science, Statistics Finland