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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...
- 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. ...
- Experiment and interpretation of geomorphological detection by multi-beam sonar in Huguang-yan Maar Lake
- 2ND FRANCO-CHINESE ACOUSTIC CONFERENCE (FCAC 2018)Zhang, Peizhen Wang, Bin Fan, Jun 出版年：2019
- The Huguangyan Maar Lake is caused by a volcanic eruption. The original sediments at the bottom of the lake are natural yearbooks for the evolution of the earth's climate and environment. A multi beam sonar technique is ...
- 修正一阶Born近似改进水中弱散射目标的散射声场预报
- 《声学学报》张培珍 王朔中 王润田 陈云飞 王露贤 出版年：2014
- 在推导Fourier衍射定理中运用一阶Born近似时忽略了弱散射体内外的波数差异,使散射声场方向特性的预报产生较大误差,针对这一问题,对一阶Born近似进行修正。考虑散射体内外波数差异引起的幅度和相位误差,通过调整频域采...
- 关键词：Born近似 散射目标 声场预报 一阶 Fourier 进水 散射声场 相位误差 被引量：1
- 广州市土壤多环芳烃污染特征及风险评估
- 《环境科学》邹子航 陈莲 张培珍 王雨菡 王振江 林森 唐翠明 罗国庆 钟建武 李智毅 王圆 出版年：2024
- 为全面研究广州市土壤多环芳烃(PAHs)污染特征,采集广州市222个表层土壤样品进行分析,利用效应区间低/中值法(ERL/ERM)和(BaP)毒性当量法评价土壤PAHs污染生态风险状况,终生癌症风险增量模型评价土壤PAH...
- 关键词：广州市 土壤 多环芳烃(PAHs) 污染 风险评估 被引量：0
- Fast prediction of broadband scattering from an underwater target using non-uniform sampling method based mode decomposition
- 2016 IEEE/OES China Ocean Acoustics Symposium, COA 2016Zhang, Peizhen Fu, Dongyang Zheng, Peizhen Li, Xiukun Fan, Jun 出版年：2016
- Broadband signals are widely used in active sonar and synthetic aperture sonar imaging, correspondingly, which require calculating broadband echo in frequency domain. Finite element (FE) is an effective method to calcula...
- 基于拉东投影与改进卷积神经网络的小样本水下目标声呐图像识别方法
- 《哈尔滨工程大学学报》周光波 张培珍 莫晴舒 尹晓锋 出版年：2024
- 针对水下声呐图像质量差、样本数量少导致目标识别精确度低的问题,本文提出一种水下目标识别方法。利用增量的全向Radon投影特征图作为输入数据,结合改进结构的卷积神经网络,实现小样本声呐图像识别。实验以5种不同目标声呐图像的...
- 关键词：水下目标识别 声呐图像 数据增量 Radon变换 卷积神经网络 迁移学习 深度学习 特征融合 被引量：0
- Fish Target Detection and Speed Estimation Method based on Computer Vision
- 2023 IEEE 6th International Conference on Electronic Information and Communication Technology, ICEICT 2023Zhang, Lanyue Zhai, Guilin Hu, Bo Qiao, Zhi Zhang, Peizhen 出版年：2023
- Taking the monitoring of fish status in aquaculture cages as the research background, the survival status of fish is assessed through the estimation of fish swimming speed, and the Yolov3 target detection algorithm and D...
- 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 ...
- Experimental Research on Acoustic Scattering of Single Fish Target
- 2024 OES China Ocean Acoustics, COA 2024Zhu, Fengqin Zhang, Haigang Zhang, Peizhen Qu, Ke Zhao, Zhiwei 出版年：2024
- The acoustic scattering intensity of single fish target is an important part of fishery acoustics research and is also an important parameter for marine fishery resource assessment. Accurate and timely assessment of fish...
- The Radiating Sound Signals of Golden Pomfret Farming in a Large Cage
- 2021 OES China Ocean Acoustics, COA 2021Zhang, Peizhen Gao, Shouyong Wang, Zhenpeng Liu, Huan Shen, Chen Mo, Qingshu 出版年：2021
- The radiating sound characteristics of golden pomfret farming in a large cage powered by wave energy and photovoltaic generation are studied. Radiating sound signals in time and spectral domain of fish in the cage are me...
- 逆向傅里叶衍射定理快速预报水下目标三维声散射指向分布
- 《声学学报》张培珍 李秀坤 范军 王斌 林芳 出版年：2021
- 提出逆向运用傅里叶衍射定理预报水下弱散射目标三维声散射指向分布的快速计算方法。依据目标形状、周围介质的密度和声速构建三维声场图像模型,建立散射远场积分结果与图像频域幅值的关系式,提取频域中半径为水中波数k;的球型表面上的...
- 关键词：声散射 指向特性 计算成本 声学参数 迭代运算 快速计算方法 弱散射 水下目标 被引量：0
- 水下目标宽带回波特性的快速计算方法
- 《上海交通大学学报》贾波 王斌 范军 张培珍 出版年：2017
- 基于传统板块元方法,运用切比雪夫多项式插值实现了水下目标宽带回波特性的快速计算.从散射声场的特性出发,将幅相分离的思想引入散射声场的分析.目标表面单个板块散射声场可分解为随频率变化的快速起伏和缓变函数的乘积,提取缓变函数...
- 关键词：板块元 散射声场 切比雪夫多项式 宽带回波特性 被引量：0
- 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...
- Analysis of acoustic scattering mechanism of a near-bottom suspended elastic sphere
- Shengxue Xuebao/Acta AcusticaZhang, Peizhen Zhou, Guangbo Fan, Jun Wang, Bin Feng, Ziyi 出版年：2024
- Based on the two-dimensional circumferential decomposition method, this study focuses on the efficient numerical calculation of the three-dimensional scattering sound field for a near-bottom target in a non-axisymmetric ...
- 关键词：field. mechanism spectrum 被引量：0
- 掩埋目标声散射特性及其实验
- 《声学学报》张培珍 李秀坤 王斌 范军 出版年：2018
- 基于变分原理建立2D-FE弱形式解模型，针对轴对称掩埋目标进行散射远场的快速、高精度数值计算。入射波垂直于对称轴，给出：掩埋深度不变，以1°为间隔，改变掠射角所得到目标散射声压级相对于垂直海底照射获得结果的差值随频率、掠...
- 关键词：声散射特性 掩埋 实验 掠射角 入射波 声压级 变分原理 散射远场 被引量：0
- 开式呼吸蛙人专用氧气瓶声散射特性
- 《上海交通大学学报》张培珍 林芳 出版年：2022
- 解决开式呼吸蛙人所携带的氧气瓶目标强度对目标全体散射的贡献问题,为掌握蛙人的精确特性预报和识别奠定基础.构建非轴对称激励下三维目标的二维有限元轴对称模型,运用声固耦合-频域多物理场接口计算不同方位声波照射目标散射远场的频...
- 关键词：有限元法 距离-角度时域回波 频率-角度谱 亮点模型 环绕波 开式呼吸蛙人 被引量：0
- 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...
- Blind estimation of blur parameters by 2d-dft on polar coordinate system presented on rectangular grids
- Proceedings - 2013 7th International Conference on Image and Graphics, ICIG 2013Zhang, Peizhen Wang, Shuozhong Fu, Dongyang 出版年：2013
- We propose a blind identification method to estimate blur parameters of a noisy image. The noisy image is blurred and degraded due to linear motion and defocusing. In a polar coordinate system, 2D-Fourier transform of a ...
