Results 1 to 10 of about 890 (213)

Dynamic Reconstruction Algorithm of Three-Dimensional Temperature Field Measurement by Acoustic Tomography

Sensors, 2017
Accuracy and speed of algorithms play an important role in the reconstruction of temperature field measurements by acoustic tomography. Existing algorithms are based on static models which only consider the measurement information.
Shi Liu
exaly   +3 more sources

Three-dimensional diffractive acoustic tomography

Nature Communications
Acoustically probing biological tissues with light or sound, photoacoustic and ultrasound imaging can provide anatomical, functional, and/or molecular information at depths far beyond the optical diffusion limit.
Luca Menozzi, Tri Vu, Aidan J. Canning, Harshal Rawtani, Carlos Taboada, Marie Elise Abi Antoun, Chenshuo Ma, Jesse Delia, Van Tu Nguyen, Soon-Woo Cho, Jianing Chen, Theresa Charity, Yirui Xu, Phuong Tran, Jun Xia, Gregory M. Palmer, Tuan Vo-Dinh, Liping Feng, Junjie Yao   +18 more
doaj   +3 more sources

Continuous Sensing of Water Temperature in a Reservoir with Grid Inversion Method Based on Acoustic Tomography System

Remote Sensing, 2021
The continuous sensing of water parameters is of great importance to the study of dynamic processes in the ocean, coastal areas, and inland waters. Conventional fixed-point and ship-based observing systems cannot provide sufficient sampling of rapidly ...
Haocai Huang, Shijie Xu, Xinyi Xie, Yong Guo, Luwen Meng, Guangming Li   +5 more
doaj   +1 more source

Reliability of non-destructive sonic tomography for detection of defects in old Zelkova serrata (Thunb.) Makino trees

Forest Science and Technology, 2021
Zelkova serrata (Thunb.) Makino trees, which account for a large proportion of cultural assets and protected trees and have considerable historical and cultural symbolic meaning in South Korea.
Jiwon Son, Sihyun Kim, Jinho Shin, Gwanggyu Lee, Han Kim   +4 more
doaj   +1 more source

Using Acoustic Tomography to Infer Stem Wood Quality of Pine Forests Affected by a Fungal Pathogen in Different Latitudinal Regions and Plantation Densities

Ecologies, 2023
Diplodia pinea is a fungal pathogen that causes Diplodia shoot blight in pines and is widely spread in red pine (Pinus resinosa) and jack pine (Pinus banksiana) forests in Michigan.
Sophan Chhin, Gregory Dahle
doaj   +1 more source

An Explicable Neighboring-Pixel Reconstruction Algorithm for Temperature Distribution by Acoustic Tomography

Energies, 2022
Acoustic process tomography is a powerful tool for monitoring multiphase flow and combustion. However, its capability of revealing details of the interrogation zone is restricted by the ill-posed and rank deficiency problems.
Qirong Qiu, Wanting Zhou, Qing Zhao, Shi Liu   +3 more
doaj   +1 more source

Internal Tree Trunk Decay Detection Using Close-Range Remote Sensing Data and the PointNet Deep Learning Method

Remote Sensing, 2023
The health and stability of trees are essential information for the safety of people and property in urban greenery, parks or along roads. The stability of the trees is linked to root stability but essentially also to trunk decay. Currently used internal
Marek Hrdina, Peter Surový
doaj   +1 more source

High resolution acoustic tomography based on backpropagation of waves

Физика волновых процессов и радиотехнические системы, 2023
A method of high-resolution acoustic tomography of scattering inhomogeneities based on the method of reverse time migration is proposed. An inhomogeneous background medium with a known distribution of refractive inhomogeneities is considered, where it is
Dmitry Ya. Sukhanov, Anzhela E. Kuzovova
doaj   +1 more source

Deep Learning Convolutional Neural Network Applying for the Arctic Acoustic Tomography Current Inversion Accuracy Improvement

Journal of Marine Science and Engineering, 2021
Warm current has a strong impact on the melting of sea ice, so clarifying the current features plays a very important role in the Arctic sea ice coverage forecasting study field.
Kangkang Jin, Jian Xu, Zichen Wang, Can Lu, Long Fan, Zhongzheng Li, Jiaxin Zhou   +6 more
doaj   +1 more source

Ocean acoustic tomography and acoustic propagation [PDF]

The Journal of the Acoustical Society of America, 1986
Ocean acoustic tomography is a method for remotely sensing deterministic and stochastic variations in the ocean sound speed field. The fundamental tomographic measurement is sound speed, and therefore tomography directly provides acoustic propagation models with this essential, first-order, environmental information.
R. C. Spindel, P. F. Worcester
openaire   +1 more source