Moving Target Refocusing Algorithm for Synthetic Aperture Radar Images

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Thomas Sjögren, Viet Thuy Vu, Mats Pettersson
Title: Moving Target Refocusing Algorithm for Synthetic Aperture Radar Images
Translated title: Återfokuseringsalgoritm för rörliga mål i syntetisk aperturradarbilder
Conference name: IEEE IGARSS
Year: 2010
Pagination: 1-4
ISBN: 978-1-4244-9566-5
Publisher: IEEE
City: Honolulu
URI/DOI: 10.1109/IGARSS.2010.5654468
ISI number: 000287933804067
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Electrical Engineering (Sektionen för ingenjörsvetenskap - Avd. för elektroteknik)
School of Engineering S-371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/ing/
Authors e-mail: tsj@bth.se
Language: English
Abstract: In the area of SAR imaging, it is of interest to be able to
focus moving targets. In this paper, an algorithm for moving
target focusing is presented. The algorithm is able to refocus
a smeared moving target in a SAR image processed at one
relative speed to the correct one.. The algorithm works in
the frequency domain and is based on the Range Migration
algorithm. The refocusing can be made on the whole SAR
image or small sub images corresponding to physical areas
of interest for the end user. By applying the algorithm to a
small image, the computational cost is greatly reduced
compared with using the full SAR image. The performance
is illustrated by applying the algorithm to simulated SAR
data according to the parameters for the LORA system.
Subject: Signal Processing\Radar and Sonar
Signal Processing\General
Keywords: Synthetic Aperture Radar, SAR processing, algorithm, moving targets, GMTI
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