Results 11 to 20 of about 1,088,237 (198)
Journal of Marine Science and Engineering, 2021 Natural gas is an important source of energy. Underwater gas pipeline leaks, on the other hand, have a serious impact on the marine environment; hence, the need for a reliable and preferably automated inspection method is essential.
Nahid Nadimi +2 more
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Late return focusing algorithm for circular synthetic aperture sonar data [PDF]
JASA Express Letters, 2021 Synthetic aperture sonar processing is used to generate imagery for remote sensing applications such as environmental characterization and object detection.
J. Daniel Park +2 more
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Guest Editorial: Synthetic aperture in sonar and radar
IET Radar, Sonar & NavigationMarco Martorella +3 more
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CZT Algorithm for Multiple-Receiver Synthetic Aperture Sonar
IEEE Access, 2020 The compensation of slant range motion errors needs to be carried out after range pulse compression in the signal processing of multiple-receiver synthetic aperture sonar (SAS).
Mengbo Ma, Jinsong Tang, Heping Zhong
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Omega-K beamforming: Practical ramifications of alternative formulations [PDF]
JASA Express Letters, 2023 The Omega-K algorithm is widely used for creating imagery from synthetic aperture sonar and radar data. In early literature related to Omega-K beamforming, two alternative forms of the algorithm exist: one in which a critical matched-filtering stage is ...
Timothy M. Marston, Daniel S. Plotnick
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Wideband Interferometry in Synthetic Aperture Sonar [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 2013 Synthetic aperture sonar (SAS) interferometry can provide very high resolution images and topographic maps of the seafloor over large swaths. Processing of interferometric data to retrieve reliable depth estimates of the seafloor is, however, nontrivial.
Torstein Olsmo Sæbø +2 more
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Wide‐bandwidth signal‐based multireceiver SAS imagery using extended chirp scaling algorithm
IET Radar, Sonar & Navigation, 2022 Traditional chirp scaling algorithm is often developed based on the quadratic approximation of point target reference spectrum, which neglects the higher‐order coupling between range and azimuth dimensions.
Xuebo Zhang +4 more
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An omega‐k algorithm for multireceiver synthetic aperture sonar
Electronics Letters, 2023 In this Letter, the authors present a novel imaging algorithm for multireceiver synthetic aperture sonar (SAS). The Loffeld's bistatic formula (LBF) including quasi‐monostatic (QM) and multireceiver deformation (MD) phases is first reformulated into ...
Xuebo Zhang, Peixuan Yang, Haixin Sun
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Effect of incorrect sound velocity on synthetic aperture sonar resolution [PDF]
MATEC Web of Conferences, 2019 Synthetic aperture sonar (SAS) is an imaging technique to produce centimeter resolution over hundreds-of-meter range on the sea floor, by constructing a virtual aperture whose length automatically adjusts itself for a given focusing range.
Ji Xia, Zhou Lisheng, Cong Weihua
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Review of interferometric synthetic aperture sonar interferometric phase filtering methods
Advances in Mechanical Engineering, 2023 Interferometric synthetic aperture sonar (InSAS) is a novel three dimensional underwater mapping system, which is widely used in various fields. Interferometric phase filtering is a crucial process in InSAS signal processing.
Pan Huang +3 more
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