|
|
|
|
|
Binghui Zhao, Liguo Han, Pan Zhang, Qiang Feng and Liyun Ma
In passive seismic exploration, the number and location of underground sources are very random, and there may be few passive sources or an uneven spatial distribution. The random distribution of seismic sources can cause the virtual shot recordings to pr...
ver más
|
|
|
|
|
|
|
|
|
|
|
Di Wu, Lanyue Zhang, Jia Wang and Xueru Hu
Detection of underwater coherent interference is necessary as its presence affects the estimation of the desired target. In this work, a method based on high-order particle velocity gradient polarization characteristics is proposed to distinguish the pre...
ver más
|
|
|
|
|
|
|
|
|
|
|
Binghui Tang, Yuemin Wang, Ang Chen, Ruqing Gong and Yunwei Zhao
Pipeline systems are prone to defects due to the harsh service conditions, which may induce catastrophic failure if found not in time. Ultrasonic guided wave (UGW) testing provides a convenient option for pipeline detection, showing high-efficiency, non-...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jason K. Jolliff, Travis A. Smith, Sherwin Ladner, Ewa Jarosz, Mark David Lewis, Stephanie Anderson, Sean McCarthy and Adam Lawson
The southward propagation of cold-air frontal boundaries into the Gulf of Mexico region initiates a cascade of coupled air?sea processes that manifests along the coastlines as an apparent brightness anomaly in the ocean color signals. Our hypothesis is t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jyoti Gondane and Meena S. Panse
Self-mixing optical coherent detection is a non-contact measurement technique which provides accurate information about the vibration frequency of any test subject. In this research, novel designs of optical homodyne and heterodyne detection techniques a...
ver más
|
|
|
|
|
|
|
|
|
|
|
Sajad Tabibi, Renaldo Sauveur, Kelly Guerrier, Gerard Metayer and Olivier Francis
Geodetic Global Navigation Satellite System reflectometry (GNSS-R) uses ground-based signals of opportunity to retrieve sea levels at an intermediate spatial scale. Geodetic GNSS-R is based on the simultaneous reception of Line-of-Sight (LoS) and its coh...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yang Lu
A method which utilizes a Kerr phase-interrogator to measure the group birefringence dispersion (GBD) of a polarization-maintaining fiber (PMF) is systematically studied in this paper. The differential group delay of two sinusoidally modulated optical si...
ver más
|
|
|
|
|
|
|
|
|
|
|
Li Zou, Kun Wang, Yichen Jiang, Aimin Wang and Tiezhi Sun
Owing to the rapid development of the offshore wind power technology and increasing capacity of wind turbines, vertical-axis wind turbines (VAWTs) have experienced a great development. Nevertheless, the VAWT wake effect, which affects the power generatio...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mykhailo Mozhaiev, Nina Kuchuk, Maksym Usatenko
Pág. 134 - 140
Relevance of the study: When choosing a platform, the quality criteria for computer system service depend significantly on the parameters of the basic telecommunications network. Therefore, the telecommunications network has strict requirements. In addit...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yang Bi, Xi?an Feng and Yangmei Zhang
Biases of initial direction estimation and focusing frequency selection affect the final focusing effect and may even cause algorithm failure in determining the focusing matrix in the coherent signal?subspace method. An optimized sonar broadband focused ...
ver más
|
|
|
|
|
|