|START||NEW VOL 20||SEARCH||STATISTICS||PAS - GDANSK DIVISION|
pp. 45-54, vol. 10, 2007
University of Technology and Life Sciences, Bydgoszcz, Poland
Abstract: Synthetic Aperture Sonar (SAS) is the high-resolution acoustic imaging technique which allows to improve the along-track resolution. A performance of SAS systems strongly depends on phase errors induced by sonar path deviations. An ideal straight path is assumed during the data gathering in such systems. The loss of coherence in the order of fraction of wavelength can result in blurring and smearing, a serious degradation of the sea-ﬂoor image. An elimination of motion errors is indispensable in order to make SAS systems applicable to high resolution imaging. Differences in motion errors modeling between systems operating in stripmap and spotlight modes are discussed. A few possible ways of the motion compensation are categorized and presented here. The results of the numerical simulation are shown and discussed in this paper.
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© Polish Acoustical Society - Gdansk Department, Polish Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported. (CC BY-NC-SA 3.0)