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AZIMUTH: 作品数：100被引量：271H指数：8; 导出分析报告; 相关领域：电子电信更多>>; 相关作者：蔡体菁张长书朱建军徐秀仓狄帮让更多>>; 相关机构：东南大学中国标准化研究院北京视域四维城市导向系统规划设计有限公司北京大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划国家高技术研究发展计划北京市自然科学基金更多>>

Deep-sea oil and gas plow-type cable broadband wide-azimuth 3D seismic acquisition and imaging: 《Science China Earth Sciences》2025年第3期683-701,共19页Yunfei YE Li-Yun FU Lijun MI Chuncai CHEN Zhenhua JIAO Hanming GU Yu WU; supported jointly by National Major Science and Technology Project of China (Grant No. 2016ZX05026001);Major Projects for the 14th Five-Year Plan of National Laboratory for Marine Science and Technology (Qingdao) (Grant No. 2021QNLM020001)。; In recent years, significant advancements have been made in deep-sea broadband seismic acquisition and its support data processing technologies. Compared with traditional constant-depth flat-cable acquisition, variabl...; 关键词：Deep-sea oil and gas Broadband wide-azimuth 3D plow-type cable deployment Three-ship six-source blended acquisition Deghosting

High-throughput analysis of maize azimuth and spacing from Lidar data: 《International Journal of Agricultural and Biological Engineering》2024年第5期105-111,F0002,共8页Zilong Wang Yiming Zhang Liqing Chen Delin Wu Yuwei Wang Lu Liu; supported by the Natural Science Research Project for Anhui Universities(Grant No.2023AH040140).; Efficient leaf azimuth angles and plant spacing are crucial for enhancing light interception efficiency in maize,thereby increasing yield per unit area.Traditional methods for measuring these traits are labor-intensiv...; 关键词：LIDAR maize azimuth angle 3D point cloud principal component analysis

SAR regional all-azimuth observation orbit design for target 3D reconstruction: 《Journal of Systems Engineering and Electronics》2024年第3期609-618,共10页WANG Yanan ZHOU Chaowei LIU Aifang MAO Qin; supported by the National Natural Science Foundation of China (62001436);the Natural Science Foundation of Jiangsu Province under (BK 20190143,JSGG20190823094603691)。; Three-dimensional(3D) synthetic aperture radar(SAR)extends the conventional 2D images into 3D features by several acquisitions in different aspects. Compared with 3D techniques via multiple observations in elevation, ...; 关键词：synthetic aperture radar(SAR) orbit design all-azimuth observation(AAO) three-dimensional(3D)reconstruction successive coverage

Horizontal borehole azimuth optimization for enhanced stability and coal seam gas production: 《Rock Mechanics Bulletin》2024年第1期115-126,共12页Erfan Saber Qingdong Qu Saiied MAminossadati Yiran Zhu Zhongwei Chen; Horizontal boreholes have been widely used to extract natural gas from coal seams.However,these boreholes can encounter severe instability issues leading to production interruption.Optimizing drilling azimuth is a pot...; 关键词：Coal seam gas Borehole stability Gas desorption Directional fracture permeability Borehole break-out

A Method to Obtain the Moving Speed of Uncooperative Target Based on Only Two Measurements: 《Advances in Aerospace Science and Technology》2024年第1期1-9,共9页Tao Yu; The existing research results show that a fixed single station must conduct three consecutive frequency shift measurements and obtain the target’s moving speed by constructing two frequency difference equations. This...; 关键词：Moving Speed Non-Cooperative Target Doppler Frequency Shift Frequency Difference Equation AZIMUTH Steady-State Signal Passive Location

An Investigation of Purely Azimuthal Passive Localization and Position Adjustment in Attempted UAV Formation Flights: 《Journal of Applied Mathematics and Physics》2023年第10期3075-3098,共24页Qi Zhang Keren Sun Qiaozhen Zhang; When a cluster of unmanned aerial vehicles (UAVs) is flying in formation, it is crucial to maintain the formation and not to be interfered by external electromagnetic wave signals. In order to maintain the formation, ...; 关键词：Pure Azimuth Passive Positioning Unmanned Aerial Vehicle (UAV) Position Adjustment Electromagnetic Silence

Estimation of the horizontal in-situ stress magnitude and azimuth using previous drilling data被引量：1: 《Petroleum》2023年第3期352-363,共12页Masoud Ziaie Mohammad Fazaelizadeh Abbas Ayatizadeh Tanha Ali Sharifzadegan; Oil exploration and production,well stability,sand production,geothermal drilling,waste-water or CO_(2) sequestration,geohazards assessment,and EOR processes such as hydraulic fracturing,require adequate information a...; 关键词：Well instability Lost circulation Drilling induced tensile fracture Image log In-situ stress Horizontal stress direction

Amplitude variation with offset and azimuth inversion to predict and evaluate coal seam fracture parameters: 《Frontiers of Earth Science》2023年第2期505-513,共9页Haibo WU Shujie ZHU Qinjie LIU Shouhua DONG Yanhui HUANG Pingsong ZHANG; supported by the University Synergy Innovation Program of Anhui Province(Nos.GXXT-2021-016 and GXXT-2019-029);the National Natural Science Foundation of China(Grant No.41902167);the Institute of Energy,Hefei Comprehensive National Science Center(No.21KZS215).; Amplitude variation with offset and azimuth(AVOA)inversion is a mainstream method for predicting and evaluating fracture parameters of conventional oil and gas reservoirs.However,its application to coal seams is limit...; 关键词：equivalent media model fracture density and strike AZIMUTH Student’s t-distribution

Wave Azimuth Cutoff Compensation Method and the Multisatellite Networking Mode of SAR: 《Journal of Ocean University of China》2023年第3期683-696,共14页WAN Yong CUI Kun QU Ruozhao DAI Yongshou LI Ligang QU Xiaojun ZHANG Xiaoyu; the support of the National Natural Science Foundation of China(No.61931025);the National Key R&D Program of China(No.2017YFC1405600)。; Synthetic aperture radars(SARs)encounter the azimuth cutoff problem when observing sea waves.Consequently,SARs can only capture the waves with wavelengths larger than the cutoff wavelength and lose the information of ...; 关键词：synthetic aperture radar(SAR) compensation effect cutoff wavelength multisatellite networking mode

Estimation of fracture size and azimuth in the universal elliptical disc model based on trace information被引量：3: 《Journal of Rock Mechanics and Geotechnical Engineering》2023年第6期1391-1405,共15页Jichao Guo Jun Zheng Qing Lü Jianhui Deng; funded by National Natural Science Foundation of China(Grant No.41972264);Zhejiang Provincial Natural Science Foundation of China(Grant No.LR22E080002);the Observation and Research Station of Geohazards in Zhejiang,Ministry of Natural Resources,China(Grant No.ZJDZGCZ-2021).; The geometric characteristics of fractures within a rock mass can be inferred by the data sampling from boreholes or exposed surfaces.Recently,the universal elliptical disc(UED)model was developed to represent natural...; 关键词：Universal elliptical disc(UED)model Rock mass Discrete fracture network(DFN) Optimization algorithm Inverse problem

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