Results 11 to 20 of about 1,151,241 (199)
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 greatest challenge due to the relatively much slower speed of sound waves and the instability ...
Foo, Kae Yeet
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An Imaging Algorithm for Multireceiver Synthetic Aperture Sonar [PDF]
Remote Sensing, 2019 For the multireceiver synthetic aperture sonar (SAS), the point target reference spectrum (PTRS) in the two-dimensional (2D) frequency domain and azimuth modulation in the range Doppler domain were first deduced based on a numerical evaluation method and
Xuebo Zhang, Cheng Tan, Wenwei Ying
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A CTFM synthetic aperture sonar
, 1989 This thesis describes the theory and operation of a seafloor imaging Synthetic Aperture Sonar (SAS), based on broadband Continuous Tone Frequency Modulation (CTFM). Narrowband synthetic aperture techniques are reviewed, and some of the limitations of using such techniques in sonar applications are described.
Hayes, Michael P.
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ANALYSIS OF REVERBERATION EFFECT ON FORMATION OF SEABED IMAGE IN SYNTHETIC APERTURE SONAR
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 A model of reverberation in the synthetic aperture sonar is considered. A assessment of reverberation effect on quality formation of seabed image in synthetic aperture sonar is performed by mathematical simulation with model of reverberant space.
S. R. Heister, T. T. Tran
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The Potential Of Synthetic Aperture Sonar
, 2000 No abstracts are to be cited without prior reference to the author.This paper initially looks at the fundamental design constraints that limit the resolution capabilities of sea floor mapping using sidescan sonar. With such constraints in mind we then compare sidescan with a new emerging technology known as synthetic aperture sonar (SAS).
Ronald McHugh (18442920)
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Synthetic aperture sonar [PDF]
, 1988 Synthetic aperture techniques have been applied very successfully for many years in astronomy and radar to obtain high resolution images, an outstanding example in recent years being the use in remote sensing satellite systems.
Avtar S. Gida (7203587)
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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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Deep Autofocus for Synthetic Aperture Sonar
CoRR, 2020 superseded by another ...
Gerg, Isaac, Monga, Vishal
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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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