DocumentCode :
817631
Title :
Distortion in the inverse synthetic aperture radar (ISAR) images of a target with time-varying perturbed motion
Author :
Wong, S.K. ; Duff, G. ; Riseborough, E.
Volume :
150
Issue :
4
fYear :
2003
Abstract :
Large distortion in ISAR images of a moving target has been investigated and demonstrated under controlled experiments. The distortion is a result of small time-varying perturbed motion experienced by the target and is attributed to a modulation effect in the phase of the radar return from the target. The Doppler motion of the target, modulated by a time-varying perturbation, results in a broad smear in the phase of the radar signal. A numerical model of the distortion based on the phase modulation effect has been developed. Simulated ISAR images produced by this model are in good agreement with experimental results. The numerical and experimental studies described provide a better understanding of the distortion mechanism that affects the ISAR images of a target in motion
Keywords :
phase modulation <ISAR images of target, time-varying perturbed motion, distortion>; radar imaging <ISAR images of target, time-varying perturbed motion, distortion>; synthetic aperture radar <ISAR images of target, time-varying perturbed motion, distortion>; Doppler motion; distortion; inverse synthetic aperture radar images; modulation effect; numerical model; phase modulation; radar return; radar signal phase smear; radar targets; simulated ISAR images; time-varying perturbed motion;
fLanguage :
English
Journal_Title :
Radar, Sonar and Navigation, IEE Proceedings -
Publisher :
iet
ISSN :
1350-2395
Type :
jour
DOI :
10.1049/ip-rsn:20030638
Filename :
1241433
Link To Document :
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