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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +3 more sources
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
doaj +3 more sources
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
doaj +3 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source