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11 条 记 录,以下是 1-11

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Fast prediction of scattered sound field based on Fourier diffraction theory under second-order born approximation
ACOUSTICAL PHYSICSZhang, Peizhen Wang, Shuozhong  出版年:2014
The directional pattern of sound waves scattered from an object insonified by a plane wave can be efficiently predicted using the Fourier diffraction theorem (FDT). This is achieved by sampling a circle in the discrete F...
局部固体填充的水中复杂目标声散射计算与实验
《物理学报》张培珍 李秀坤 范军 王斌  出版年:2016
利用二维有限元方法研究水中局部填充的带球冠柱体目标声散射特性,所采用的数值方法可高效地实现精细化、宽带、复杂轴对称模型散射声场计算.根据数值结果解释壳体、填充物以及入射方位对目标散射远场的影响,确定复杂目标散射研究中所必...
关键词:二维有限元  局部填充的带球冠柱壳  距离-角度时域回波  频率-角度谱  被引量:3
水下掩埋目标的散射声场计算与实验
《物理学报》胡珍 范军 张培珍 吴玉双  出版年:2016
水下掩埋目标声散射问题是识别和探测掩埋目标的理论基础,是声散射研究领域的热点问题.本文基于射线声学推导了掩埋情况下目标声散射计算的格林函数近似式,并在此基础上进一步给出了相应的远场积分公式.在有限元方法的基础上,将推导得...
关键词:掩埋目标声散射  格林函数近似式  散射声场计算  被引量:3
Reducing frequency-domain artifacts of binary image due to coarse sampling by repeated interpolation and smoothing of Radon projections
JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATIONZhang, Peizhen Wang, Shuozhong Wang, Runtian  出版年:2012
We develop a method to calculate 2D spectrum of a binary image with better quality than that obtained via direct 2D-FFT. With FFT, jagged edges of objects due to coarse sampling introduce artifacts into the frequency dom...
Seismic Interferometry for Single-Channel Data: A Promising Approach for Improved Offshore Wind Farm Evaluation
REMOTE SENSINGWang, Rui Hu, Bin Zhang, Hairong Zhang, Peizhen Li, Canping Chen, Fengying  出版年:2025
Single-channel seismic (SCS) methods play a crucial role in offshore wind farm assessments, offering rapid and continuous imaging of the subsurface. Conventional SCS methods often fall short in resolution and signal comp...
Acoustic Scattering Characteristics and Geometric Parameter Prediction for Underwater Multiple Targets Arranged in a Linear Pattern
JOURNAL OF MARINE SCIENCE AND ENGINEERINGZhang, Peizhen Yin, Xiaofeng Wang, Bin Feng, Ziyi  出版年:2024
The construction of wind farm pilings, submarine pipelines, and underwater submarines involves multiple cylinders. However, there is currently a lack of economic research on predicting the mechanism and characteristics o...
Direction of Arrival Estimation and Highlighting Characteristics of Testing Wideband Echoes from Multiple Autonomous Underwater Vehicles
SENSORSYin, Xiaofeng Zhang, Peizhen Zhou, Guangbo Feng, Ziyi  出版年:2023
Multiple autonomous underwater vehicles (AUVs) have gradually become the trend in underwater operations. Identifying and detecting these new underwater multi-targets is difficult when studying underwater moving targets. ...
Study of underwater sound propagation and attenuation characteristics at the Yangjiang offshore wind farma
ECOLOGICAL INFORMATICSHuo, Xinze Zhang, Peizhen Feng, Ziyi  出版年:2024
The rapid growth of offshore wind farms has become a global priority, with both new and total installed capacities increasing sharply. Consequently, underwater noise generated with these developments has garnered signifi...
Prediction of Target-Induced Multipath Interference Acoustic Fields in Shallow-Sea Ideal Waveguides and Statistical Characteristics of Waveguide Invariants
JOURNAL OF MARINE SCIENCE AND ENGINEERINGZhang, Yuanhang Zhang, Peizhen Li, Jincan  出版年:2025
The acoustic scattering of targets in shallow-sea waveguides exhibits complex features such as multipath propagation and intricate echo components, with its acoustic field properties remaining incompletely understood. Th...
Underwater Noise Characteristics of the Tidal Inlet of Zhanjiang Bay
WATERHuo, Xinze Zhang, Peizhen Yuan, Yiquan Li, Gaocong Tang, Jieping Shi, Benwei  出版年:2023
The coupling mechanism between natural and anthropogenic noise in shallow marine areas is of great significance for maintaining the ecological safety of these regions. In this study, a section of Zhanjiang Bay's entrance...
Underwater Target Classification Based on Feature Fusion and Gene Encoding of CNN-BIGRU-Attention
IEEE ACCESSFeng, Ziyi Zhang, Peizhen Huo, Xinze  出版年:2023
Towards addressing the issues of poor image quality and limited sample quantity in underwater sonar images. A genetic encoding method for the fusion of image spot and local binary pattern texture features is employed in ...
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