Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Hanhao Zhu"'
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 18112-18128 (2024)
The advancement of underwater search and rescue technology has made target image recognition crucial for improving efficiency and accuracy in side-scan sonar operations. However, the complexity of the underwater environment presents challenges, such
Externí odkaz:
https://doaj.org/article/6c7e74ece94a4e0ea723878812fb509c
Publikováno v:
Frontiers in Marine Science, Vol 11 (2024)
IntroductionExisting methods primarily focus on earth acoustic parameters inversion under specific layered structures. However, they face challenges with experimental data from unknown seabed stratification, hindering accurate parameter inversion.Met
Externí odkaz:
https://doaj.org/article/9a9ce0d841214728a9e981020d304974
Publikováno v:
Applied Sciences, Vol 14, Iss 6, p 2417 (2024)
A study concerning the influence of flow on the Herschel–Quincke duct is presented here, which includes the numerical model, the acoustic source and the absorption condition called the Perfectly Matched Layer. For the excitation of a sound field, a
Externí odkaz:
https://doaj.org/article/70973f5882af4c1a8fd9c4cefa4ef70a
Publikováno v:
Remote Sensing, Vol 15, Iss 20, p 4908 (2023)
Side-scan sonar (SSS) is an important underwater imaging method that has high resolutions and is convenient to use. However, due to the restriction of conventional pulse compression technology, the side-scan sonar beam sidelobe in the range direction
Externí odkaz:
https://doaj.org/article/65a2f2d9037b476aad702c9caae3ce6c
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
Seabed geoacoustic parameters play an important role in underwater acoustic channel modeling. Traditional methods to determine these parameters, for example, drilling, are expensive and are being replaced by acoustic inverse technology. An inversion
Externí odkaz:
https://doaj.org/article/0eca0d01867a4178a68ceaf55b6375ab
Autor:
Hanhao Zhu, Yangyang Xue, Qunyan Ren, Xu Liu, Jiahui Wang, Zhiqiang Cui, Shu Zhang, Huili Fan
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
Underwater acoustic technology is essential for ocean observation, exploration and exploitation, and its development is based on an accurate predication of underwater acoustic wave propagation. In shallow sea environments, the geoacoustic parameters,
Externí odkaz:
https://doaj.org/article/5d7bcf3f54c244ed98f4a9abb86c4dec
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 7, p 1340 (2023)
In response to the drawbacks of low efficiency, cumbersome calculation, and easy-to-fall local optimal solutions in existing shallow water acoustic parameters inversion research, this paper proposes a shallow water acoustic parameters inversion metho
Externí odkaz:
https://doaj.org/article/66ca1f4c6aee41efacd37df7a920c93e
Publikováno v:
IEEE Access, Vol 8, Pp 220692-220702 (2020)
Likelihood probability based phylogenetic analysis approaches have contributed to impressive advances in minimizing the variance of estimating the evolutionary parameters. However, their actual applications are greatly limited due to the very time-co
Externí odkaz:
https://doaj.org/article/b52c70d4c6e1462bbbb35a318d49877d
Publikováno v:
Sensors, Vol 21, Iss 1, p 192 (2020)
This work is concerned with the characteristics of very low frequency sound propagation (VLF, ≤100 Hz) in the shallow marine environment. Under these conditions, the classical hypothesis of considering the sea bottom as a fluid environment is no lo
Externí odkaz:
https://doaj.org/article/5498da25616a49538296c572a8f7f5a7
Publikováno v:
Sensors, Vol 20, Iss 7, p 2150 (2020)
Geoacoustic parameter inversion is a crucial issue in underwater acoustic research for shallow sea environments and has increasingly become popular in the recent past. This paper investigates the geoacoustic parameters in a shallow sea environment us
Externí odkaz:
https://doaj.org/article/9f8842ccb666440ba1e39b2e75b89cdf