云南高校图书馆联盟文献共享服务平台- MULTIFREQUENCY

MULTIFREQUENCY: 作品数：40被引量：39H指数：4; 导出分析报告; 相关领域：电子电信更多>>; 相关机构：东南大学南京航空航天大学更多>>; 相关期刊：《World Journal of Gastroenterology》《High Voltage》《Journal of Beijing Institute of Technology》《Chinese Physics Letters》更多>>; 相关基金：国家自然科学基金国家教育部博士点基金王宽诚敎育基金国家重点基础研究发展计划更多>>

Automatic Pavement Crack Detection Based on Octave Convolution Neural Network with Hierarchical Feature Learning: 《Journal of Beijing Institute of Technology》2024年第5期422-435,共14页Minggang Xu Chong Li Ying Chen Wu Wei; supported in part by the National Natural Foundation of China(No.62176147)。; Automatic pavement crack detection plays an important role in ensuring road safety.In images of cracks,information about the cracks can be conveyed through high-frequency and low-fre-quency signals that focus on fine ...; 关键词：automated pavement crack detection octave convolutional network hierarchical feature multiscale MULTIFREQUENCY

Design of a Multifrequency Signal Parameter Estimation Method for the Distribution Network Based on HIpST: 《Energy Engineering》2024年第3期729-746,共18页Bin Liu Shuai Liang Renjie Ding Shuguang Li; supported by the State Grid Corporation of China Headquarters Management Science and Technology Project(No.526620200008).; The application of traditional synchronous measurement methods is limited by frequent fluctuations of electrical signals and complex frequency components in distribution networks.Therefore,it is critical to find solut...; 关键词：Discrete fourier transform taylor series hilbert transform multifrequency signal parameter estimation

Robust gain-scheduled missile autopilot design based on multifrequency extended state observers: 《Chinese Journal of Aeronautics》2023年第12期390-407,共18页Zonghua SUN Liaoni WU Yancheng YOU; the support of the National Natural Science Foundation of China(No.U21B6003)。; This paper describes the design and implementation of a three-axis acceleration control autopilot for an asymmetric tail-controlled,skid-to-turn tactical missile.In an earlier flight test,degraded autopilot performanc...; 关键词：Acceleration control Control engineering Disturbance rejection Multifrequency extended state observer Flight control systems Gain scheduling Singular perturbation

Multi-mode microcavity frequency engineering through a shifted grating in a photonic crystal ring被引量：3: 《Photonics Research》2023年第11期I0009-I0016,共8页XIYUAN LU YI SUN ASHISH CHANANA USMAN AJAVID MARCELO DAVANCO KARTIK SRINIVASAN; Maryland Innovation Initiative;National Institute of Standards and Technology(NIST-on-a-chip);Defense Advanced Research Projects Agency(LUMOS)。; Frequency engineering of whispering-gallery resonances is essential in microcavity nonlinear optics.The key is to control the frequencies of the cavity modes involved in the underlying nonlinear optical process to sat...; 关键词：MULTIFREQUENCY mode shifted

Oil‐paper insulation partial discharge ultrasonic multifrequency sensing array based on fibre‐optic Fabry-Perot sensor被引量：5: 《High Voltage》2022年第2期325-335,共11页Zhixian Zhang Jiali Lei Weigen Chen Tianhe Yang Yuxuan Song Kejie Wu Fan Liu; supported by the National Natural Science Foundation of China(U1766217);the State Grid Corpo-ration of China’s Science and Technology Project(5500‐202099279A‐0‐0‐00).; In order to improve the sensitivity and accuracy of oil‐paper insulation partial discharge detection by the fibre‐optic Fabry-Perot(FP)ultrasonic sensor,this work studied the ultrasonic signal’s frequency character...; 关键词：INSULATION FIBRE SENSOR

Distributed wide field electromagnetic method based on high-order 2^(n) sequence pseudo random signal被引量：5: 《Transactions of Nonferrous Metals Society of China》2022年第5期1609-1622,共14页Yang YANG Ji-shan HE Fan LING Yu-zhen ZHU; funded by the National Natural Science Foundation of China(No.42004056);the Natural Science Foundation of Shangdong Province,China(No.ZR2020QD052);China Postdoctoral Science Foundation(No.2019M652386)。; To make three-dimensional electromagnetic exploration achievable,the distributed wide field electromagnetic method(WFEM)based on the high-order 2^(n) sequence pseudo-random signal is proposed and realized.In this meth...; 关键词：distributed wide field electromagnetic method(WFEM) high-order pseudo-random signal MULTIFREQUENCY massive data

Tunable Fluid-Type Metasurface for Wide-Angle and Multifrequency Water-Air Acoustic Transmission: 《Research》2022年第1期111-124,共14页Zhandong Huang Shengdong Zhao Yiyuan Zhang Zheren Cai Zheng Li Junfeng Xiao Meng Su Qiuquan Guo Chuanzeng Zhang Yaozong Pan Xiaobing Cai Yanlin Song Jun Yang; J.Yang is thankful to the Natural Sciences and Engineering Research Council of Canada(NSERC:RGPIN-2016-05198);M.Su and Y.Song thank for the financial support from the National Key R&D Program of China(Grant no.2018YFA0208501);the National Natural Science Foundation of China(Grant nos.51803217,51773206,91963212,and 51961145102);Beijing Nova Program(no.Z201100006820037);the Youth Innovation Promotion Association CAS(no.2020032);the K.C.Wong Education Foundation,and Beijing National Laboratory for Molecular Sciences(no.BNLMS-CXXM-202005);S.Zhao is thankful to the National Natural Science Foundation of China(Grant no.11902171);the Postdoctoral Science Foundation(Grant no.2019M662297);C.Zhang gratefully acknowledges the financial support by the German Research Foundation(DFG,project no.ZH 15/27-1)。; Efficient acoustic communication across the water-air interface remains a great challenge owing to the extreme acoustic impedance mismatch.Few present acoustic metamaterials can be constructed on the free air-water in...; 关键词：interface ACOUSTICS EXTREME

Multifrequency superscattering pattern shaping: 《Chinese Optics Letters》2021年第12期130-136,共7页Yao Qin Jinying Xu Yineng Liu Huanyang Chen; supported by the National Natural Science Foundation of China(Nos.11504306 and 92050102);Fujian Provincial Natural Science Foundation(No.2017J05015)。; Multifrequency superscattering is a phenomenon in which the scattering cross section from a subwavelength object simultaneously exceeds the single-channel limit at multiple frequency regimes.Here,we achieve simultaneo...; 关键词：superscattering pattern shaping subwavelength structure GRAPHENE plasmon polariton

Multifrequency Gravitational Wave Background from Continuous Sources: 《Journal of High Energy Physics, Gravitation and Cosmology》2021年第2期698-714,共17页C. Sivaram Arun Kenath; Gravitational waves have been detected in the past few years from several transient events such as merging stellar mass black holes, binary neutron stars, etc. These waves have frequencies in a band ranging from a few...; 关键词：Gravitational Waves Neutron Star Mergers Black Hole Mergers Primordial Black Holes Continuous Gravitational Waves Thermal Gravitational Waves Detection of Gravitational Waves

Tunable Fluid-Type Metasurface for Wide-Angle and Multifrequency Water-Air Acoustic Transmission被引量：2: 《Research》2021年第1期661-674,共14页Zhandong Huang Shengdong Zhao Yiyuan Zhang Zheren Cai Zheng Li Junfeng Xiao Meng Su Qiuquan Guo Chuanzeng Zhang Yaozong Pan Xiaobing Cai Yanlin Song Jun Yang; J.Yang is thankful to the Natural Sciences and Engineering Research Council of Canada(NSERC:RGPIN-2016-05198);M.Su and Y.Song thank for the financial support from the National Key R&D Program of China(Grant no.2018YFA0208501);the National Natural Science Foundation of China(Grant nos.51803217,51773206,91963212,and 51961145102);Beijing Nova Program(no.Z201100006820037);the Youth Innovation Promotion Association CAS(no.2020032);the K.C.Wong Education Foundation,and Beijing National Laboratory for Molecular Sciences(no.BNLMS-CXXM-202005);S.Zhao is thankful to the National Natural Science Foundation of China(Grant no.11902171);the Postdoctoral Science Foundation(Grant no.2019M662297);C.Zhang gratefully acknowledges the financial support by the German Research Foundation(DFG,project no.ZH 15/27-1)。; Efficient acoustic communication across the water-air interface remains a great challenge owing to the extreme acoustic impedance mismatch.Few present acoustic metamaterials can be constructed on the free air-water in...; 关键词：interface ACOUSTICS EXTREME

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