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- W1530966730 abstract "A key supporting technology for future naval capabilities (FNCs) in long-range search and survey will be synthetic aperture sonar (SAS). The few existing, R&D, SAS systems tend to have relatively narrow bandwidth and beamwidth. In order to attain FNC goals of high resolution at long ranges, system designs will be driven toward both larger bandwidth and wider beam-width. In this study we emulate broadband and wide-beam data in order to analyze their implications for SAS processing. We specifically break the processing into the three steps: motion estimation, motion compensation, and image formation. The modeled data include beam patterns that are wide and frequency dependent as expected for widebeam/broad-band systems. For such systems, the interplay between beam-width and bandwidth will cause the frequency content of the received waveforms to depend on both the range and the bearing of the target. This complicates motion estimates that are based on correlating signals from sequential pings. Because data are linear combinations of signals from potentially very different bearings, the motion compensation step is more complicated as well. Both the motion estimation and motion compensation steps are more naturally addressed after the data are transformed to range-bearing space." @default.
- W1530966730 created "2016-06-24" @default.
- W1530966730 creator A5022063129 @default.
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- W1530966730 date "2002-11-13" @default.
- W1530966730 modified "2023-09-27" @default.
- W1530966730 title "Synthetic aperture sonar processing for widebeam/broadband data" @default.
- W1530966730 cites W2101961721 @default.
- W1530966730 cites W2152759373 @default.
- W1530966730 doi "https://doi.org/10.1109/oceans.2001.968715" @default.
- W1530966730 hasPublicationYear "2002" @default.
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