Results 21 to 30 of about 1,320,226 (145)
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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Remote Sensing, 2022 The disposal of unexploded ordnance (UXOs) at sea is a global problem. The mapping and remediation of historic UXOs can be assisted by autonomous underwater vehicles (AUVs) carrying sensor payloads such as synthetic aperture sonar (SAS) and optical ...
Oscar Bryan +4 more
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The Journal of Engineering, 2019 Based on the method of deriving two-dimensional wavenumber spectrum by using instantaneous Doppler wavenumber in bistatic synthetic aperture radar, the analytical solution of two-dimensional wavenumber spectrum of multi-receiver synthetic aperture sonar (
Jinbo Wang, Jinsong Tang, Zhen Tian
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Adaptive phase estimation filter in long range synthetic aperture sonar interferometry
Electronics Letters, 2023 Synthetic aperture sonar (SAS) interferometry is a technique for very high resolution imaging and mapping of the seabed. In SAS interferometry, the seabed depth estimation performance is a function of the system, the geometry, the signal‐to‐noise ratio ...
Torstein Olsmo Sæbø, Roy Edgar Hansen
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Efficient imaging method for multireceiver SAS
IET Radar, Sonar & Navigation, 2022 With the Loffeld's bistatic formula, the point target reference spectrum (PTRS) of multireceiver synthetic aperture sonar (SAS) can be decomposed into the quasi monostatic term and bistatic deformation (BD) term.
Xuebo Zhang +3 more
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Synthetic aperture sonar imaging using compressive sensing and an ultrasound transducer array [PDF]
, 2013 Includes bibliographical references.Compressive sensing (CS) also known as compressive sampling is a technique used to reconstruct or recover the full-length of a signal with only a few non-adaptive measurements.
Jideani, Josiah Chimnanu
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High-resolution imaging for the multireceiver SAS
The Journal of Engineering, 2019 The area coverage rate is dramatically improved by using the multireceiver technique. However, this configuration leads to the complexity of the synthetic aperture image formation.
Xuebo Zhang +3 more
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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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Combining range-general and range-specific techniques for late-time focused image reconstructiona) [PDF]
JASA Express LettersSynthetic aperture sonar (SAS) is an acoustic method for detecting objects in an environment. Conventional SAS image reconstruction techniques invert a forward model based on geometric scattering and straight-line propagation.
Kyle S. Dalton +2 more
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Platform motion estimation in multi-band synthetic aperture sonar with coupled variational autoencoders [PDF]
JASA Express LettersCoherent processing in synthetic aperture sonar (SAS) requires platform motion estimation and compensation with sub-wavelength accuracy for high-resolution imaging.
Angeliki Xenaki +2 more
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