Results 11 to 20 of about 1,248,801 (164)
Exploitation of SAS interferometric phase statistics for coherent change detection
Electronics Letters, 2023 Coherent change detection (CCD) takes advantage of the interferometric processing of synthetic aperture sonar (SAS) images and enables the detection of small scale changes to the scene between image pairs.
Emma Shouldice, Vincent Myers
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Electronics Letters, 2023 The authors present exploitation of Multiple Views in Single‐Path (MVSP) Synthetic Aperture Sonar (SAS). The authors demonstrate the interest of MVSP SAS for underwater Mine Counter‐Measures (MCM) with unmanned vehicles, to comply with requirements for ...
Jean‐Philippe Malkasse +4 more
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Compressive Underwater Sonar Imaging with Synthetic Aperture Processing
Remote Sensing, 2021 Synthetic aperture sonar (SAS) is a technique that acquires an underwater image by synthesizing the signal received by the sonar as it moves. By forming a synthetic aperture, the sonar overcomes physical limitations and shows superior resolution when ...
Ha-min Choi +2 more
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Synthetic aperture imagery for high-resolution imaging sonar [PDF]
Frontiers in Marine Science, 2022 Synthetic aperture sonar (SAS) can provide high-resolution underwater images. Traditional fast imaging algorithms designed for multi-receiver synthetic aperture sonar (MSAS) are complex because the point target reference spectrum (PTRS) deduction and ...
Pan Huang, Peixuan Yang
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An experimental test of endfire synthetic aperture sonar for sediment characterisation
IET Radar, Sonar & NavigationThe validation of seafloor scattering models used for seabed characterisation requires quantifying the contributions from the sediment interface and volume to the total acoustic returns.
Shannon‐Morgan Steele +1 more
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Optimising collection geometry for long‐range synthetic aperture sonar interferometry
IET Radar, Sonar & NavigationInterferometric synthetic aperture sonar (SAS) is a technique to image and map the seabed in very high resolution. For large area coverage rate systems with hundreds of metres swath width, the achievable performance varies significantly over the swath ...
Roy Edgar Hansen, Torstein Olsmo Sæbø
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Deep learning‐based time delay estimation for motion compensation in synthetic aperture sonars
IET Radar, Sonar & NavigationAccurate and robust time delay estimation is crucial for synthetic aperture sonar (SAS) imaging. A two‐step time delay estimation method based on displaced phase centre antenna (DPCA) micronavigation has been widely applied in motion estimation and ...
Shiping Chen +5 more
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Remote Sensing in Ecology and ConservationThe United Nations' sustainable development goal to designate 30% of the oceans as marine protected areas by 2030 requires practical management tools, and in turn ecologically meaningful mapping of the seafloor. Particularly challenging is the mesophotic
Ole Johannes Ringnander Sørensen +12 more
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Incoherent processing of synthetic aperture sonar [PDF]
, 2004 The technique of synthetic aperture imaging is well applied in radar to produce images with high along-track resolution. However, when applied in sonar imaging, maintaining phase coherence across the length of the synthetic aperture had proven to be the ...
Foo, Kae Yeet
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A Multireceiver SAS Imaging Algorithm and Optimization
IEEE Access, 2023 Seafloor mapping is an important related to oceanic engineering. However, traditional side-scan, multibeam, and sub-bottom sonar systems generate acoustic images having insufficient resolution owing to their restricted array aperture.
Meng Wang, Pan Huang
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