Zobrazeno 1 - 10
of 2 953
pro vyhledávání: '"Synthetic Aperture Sonar"'
Publikováno v:
JASA Express Letters. Mar2024, Vol. 4 Issue 3, p1-7. 7p.
Publikováno v:
JASA Express Letters. Feb2024, Vol. 4 Issue 2, p1-7. 7p.
Publikováno v:
IET Radar, Sonar & Navigation, Vol 18, Iss 5, Pp 740-753 (2024)
Abstract Accurate and robust time delay estimation is crucial for synthetic aperture sonar (SAS) imaging. A two‐step time delay estimation method based on displaced phase centre antenna (DPCA) micronavigation has been widely applied in motion estim
Externí odkaz:
https://doaj.org/article/f6616c8c1f464fa589c6825d91dbfe04
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 18038-18057 (2024)
Seabed characterization consists in the study of the physical and biological properties of the of ocean floors. Sonar is commonly employed to capture the acoustic backscatter reflected from the seabed. It has been extensively used for automatic targe
Externí odkaz:
https://doaj.org/article/054480a8789a4270b2408d1bc5d74739
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 9517-9532 (2024)
Having well-focused synthetic aperture sonar (SAS) imagery is important for its accurate analysis and support of autonomous systems. Despite advances in motion estimation and image formation methods, there persists a need for robust autofocus algorit
Externí odkaz:
https://doaj.org/article/baae85957c3a473a9b927ecf75135543
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Publikováno v:
Remote Sensing, Vol 16, Iss 17, p 3265 (2024)
When a synthetic aperture sonar (SAS) system operates under low-frequency broadband conditions, the azimuth range coupling of the point target reference spectrum (PTRS) is severe, and the high-resolution imaging range is limited. To solve the above i
Externí odkaz:
https://doaj.org/article/e1fadd3114944f7e84f77f7978eb65b1
Publikováno v:
Defence Technology, Vol 23, Iss , Pp 214-228 (2023)
Target strength (TS) and circular synthetic aperture sonar (CSAS) images provide essential information for active acoustic detection and recognition of non-cooperative unmanned undersea vehicles (UUVs), which pose a significant threat to underwater p
Externí odkaz:
https://doaj.org/article/cd9bcb6ccbb3486c9628afd32f2fcf00
Publikováno v:
Remote Sensing, Vol 16, Iss 12, p 2144 (2024)
For a multi-hydrophone synthetic aperture sonar (SAS), the instability of the platform and underwater turbulence easily lead to two-dimensional (2-D) space-variant (SV) motion errors. Such errors can cause serious imaging problems and are very diffic
Externí odkaz:
https://doaj.org/article/90f183fc16b54b659376f9407d448c93
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
The existing multi-receiver synthetic aperture sonar (SAS) imaging algorithms are suitable for narrow-beam width, which will lead to a decrease in imaging quality under wide-beam condition and are not in line with the development needs of SAS. We pro
Externí odkaz:
https://doaj.org/article/8ab81a6dc1234478a3af85b26dee7c4e