Synthetic Aperture Sonar (SAS) without Navigation: Scan Registration as Basis for Near Field Synthetic Imaging in 2D [PDF]
Sensors, 2020 Sonars are essential for underwater sensing as they can operate over extended ranges and in poor visibility conditions. The use of a synthetic aperture is a popular approach to increase the resolution of sonars, i.e., the sonar with its N transducers is ...
Heiko Bülow, Andreas Birk
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Accelerated Deconvolved Imaging Algorithm for 2D Multibeam Synthetic Aperture Sonar [PDF]
Sensors, 2022 High-accuracy level underwater acoustical surveying plays an important role in ocean engineering applications, such as subaqueous tunnel construction, oil and gas exploration, and resources prospecting. This novel imaging method is eager to break through
Bo Wei, Chuanlin He, Siyu Xing, Yi Zheng
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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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Three-Dimensional Imaging of Circular Array Synthetic Aperture Sonar for Unmanned Surface Vehicle [PDF]
Sensors, 2022 Synthetic aperture sonar (SAS) and interferometric synthetic aperture sonar (InSAS) have a range layover phenomenon during underwater observation, the AUV-mounted circular synthetic aperture sonar (CSAS) system, that insonifies targets using multiple ...
Sai Zeng, Wei Fan, Xuanmin Du
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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
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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Range-doppler algorithm of multireceiver synthetic aperture sonar using nonuniform signal. [PDF]
PLoS ONEWhen the structures of multireceiver synthetic aperture sonar (SAS) are applied, imaging techniques are not always able to acquire images with outstanding resolution in nonuniform situations.
Pan Huang +4 more
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Back Projection Algorithm for Multi-Receiver Synthetic Aperture Sonar Based on Two Interpolators
Journal of Marine Science and Engineering, 2022 The back projection (BP) algorithm is characterized by its high performance for multi-receiver synthetic aperture sonar (SAS). For this reason, it is usually used to evaluate the imaging performance of Fourier-domain methods.
Xuebo Zhang, Peixuan Yang
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A Correction Approach for the Inclined Array of Hydrophones in Synthetic Aperture Sonar [PDF]
Sensors, 2018 Jinsong Tang, Heping Zhong, Haoran Wu
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Motion compensation using joint-sub-band phase unwrapping for synthetic aperture sonar [PDF]
JASA Express Letters, 2022 Displaced phase center antenna (DPCA) micro-navigation has been widely applied in the motion compensation of synthetic aperture sonars (SASs). Estimating the time delay is the most important step for DPCA-based motion compensation.
Shiping Chen +6 more
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