|
|
|
|
|
Chenglei Lv, Qiushi Sun, Huifang Chen and Lei Xie
Due to the relative motion between transmitters and receivers and the multipath characteristic of wideband underwater acoustic channels, Doppler and channel estimations are of great significance for an underwater acoustic (UWA) communication system. In t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Haiyang Yao, Tian Gao, Yong Wang, Haiyan Wang and Xiao Chen
To overcome the challenges of inadequate representation and ineffective information exchange stemming from feature homogenization in underwater acoustic target recognition, we introduce a hybrid network named Mobile_ViT, which synergizes MobileNet and Tr...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jing Li, Jin Fu and Nan Zou
The underwater channel is bilateral, heterogeneous, uncertain, and exhibits multipath transmission, sound line curvature, etc. These properties complicate the structure of the received pulse, causing great challenges in direct signal identification for r...
ver más
|
|
|
|
|
|
|
|
|
|
|
Alexander Lange, Ronghua Xu, Max Kaeding, Steffen Marx and Joern Ostermann
Regular inspections of important civil infrastructures are mandatory to ensure structural safety and reliability. Until today, these inspections are primarily conducted manually, which has several deficiencies. In context of prestressed concrete structur...
ver más
|
|
|
|
|
|
|
|
|
|
|
Max Käding and Steffen Marx
Acoustic emission monitoring (AEM) has emerged as an effective technique for detecting wire breaks resulting from, e.g., stress corrosion cracking, and its application on prestressed concrete bridges is increasing. The success of this monitoring measure ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Chan-Sol Park, Soo-Jin Ahn, Yeong-Bae Lee and Chang-Ki Kang
In ultrasound diagnostics, acoustic absorbers block unwanted acoustic energy or prevent the reception of echo signals from structures outside the target area. Non-metallic absorbers provide a low-echoic signal that is suitable for observing the anatomy o...
ver más
|
|
|
|
|
|
|
|
|
|
|
Won Shin, Da-Sol Kim and Hyunsuk Ko
In submarine warfare systems, passive SONAR is commonly used to detect enemy targets while concealing one?s own submarine. The bearing information of a target obtained from passive SONAR can be accumulated over time and visually represented as a two-dime...
ver más
|
|
|
|
|
|
|
|
|
|
|
Indrakshi Dey and Nicola Marchetti
In this paper, we develop a tractable mathematical model and an emulation framework for communicating information through water using acoustic signals. Water is considered one of the most complex media to model due to its vastness and variety of characte...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ruixiang Kan, Mei Wang, Xin Liu, Xiaojuan Liu and Hongbing Qiu
For indoor sensor systems, it is essential to implement an extra supporting area notification part. To inform the real-time coordinates, the time difference of arrival (TDOA) algorithm can be introduced. For these indoor localization systems, their main ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Michal Tu?er, Marek Brabec, Helge Balk, Vladislav Dra?tík, Jan Kubecka and Jaroslava Frouzová
Fish body orientation significantly influences the size obtained with hydroacoustic signals, and thus the estimate of fish size and biomass. For this reason, each characteristic of a target?s echo can be advantageous for developing algorithms to refine a...
ver más
|
|
|
|
|
|