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DUAL-FREQUENCY: 作品数：103被引量：123H指数：5; 导出分析报告; 相关领域：电子电信更多>>; 相关作者：商建杨汝良更多>>; 相关机构：西北师范大学中国气象局中国科学院电子学研究所华南理工大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金中国博士后科学基金国家重点基础研究发展计划广东省自然科学基金更多>>

Azimuth-based antenna group delay variation modeling for dual-frequency multi-constellation GBAS: 《Chinese Journal of Aeronautics》2025年第2期370-380,共11页Yuan LIU Yanbo ZHU Kun FANG Zhipeng WANG; the National Key Research and Development Program of China(No.2023YFB3907001);the financial support from the National Natural Science Foundation of China(Nos.62371029,U2233217 and 62101019);the Civil Aviation Security Capacity Building Fund Project of China(Nos.CAAC Contract 2021(77)and CAAC Contract 2022(110)).; Antenna Group Delay Variation(AGDV)is a hardware error source that affects the performance of Dual-Frequency Multi-Constellation(DFMC)Ground-based Augmentation System(GBAS),and these errors are difficult to distinguis...; 关键词：Antenna Group Delay Variation(AGDV) Ground-based Augmentation System(GBAS) Integrity Vertical protection level Navigation

Simultaneous wireless information and power transmission system based on a dual-frequency metasurface design: 《Frontiers of Information Technology & Electronic Engineering》2024年第12期1732-1741,共10页Yicen LI Mingyang CHANG Hao XUE Haixia LIU Long LI; Project supported by the National Key Research and Development Program of China(No.2023YFB3811503);the National Natural Science Foundation of China(No.62288101);the Key Research and Development Program of Shaanxi Province,China(No.2021TD-07);the Fundamental Research Funds for the Central Universities,China(No.20103224952)。; Nowadays,the number of wireless sensor devices is increasing rapidly,posing persistent challenges related to battery replacement and power wiring.This paper presents a simultaneous wireless information and power trans...; 关键词：POWER WIRELESS surface

Acoustic feature extraction of radiation pressure signal induced by bubble oscillation under dual-frequency acoustic excitation based on CEEMDAN and bubble entropy: 《International Journal of Fluid Engineering》2024年第4期139-150,共12页Xianghao Zheng Yuning Zhang Yiming Li; financially supported by the Scientific Research Starting Foundation of Fuzhou University(Project No.511429); Acoustic feature extraction of radiation pressure signals(RPSs)induced by bubble oscillations is a crucial task in the characterization of the properties of underwater objects.In this article,to improve the extraction...; 关键词：CEEMDAN ENTROPY BUBBLE

Enhancement of the corrosion resistance of the Mg alloy ZW61 by dual-frequency ultrasonic vibration被引量：1: 《Journal of Magnesium and Alloys》2024年第12期4887-4908,共22页Zhaoyang Yin Qichi Le Qi Zou Liang Ren Weiyang Zhou Yanchao Jiang Xingrui Chen Andrej Atrens Qiyu Liao; financially supported by the National Natural Science Foundation of China(Grant No.51974082 and 52304391);the Programme of Introducing Talents of Discipline Innovation to Universities 2.0(the 111 Project 2.0 of China,No.BP0719037)。; Ultrasonic vibration was introduced into the casting of quasicrystal-reinforced magnesium alloy ZW61.The microstructure,mechanical properties,and corrosion resistance were studied.The dual-frequency ultrasonic field(D...; 关键词：Magnesium alloy Dual-frequency ultrasonic Corrosion behavior Grain refinement Quasicrystal I-phase

A New Algorithm of Rain Type Classification for GPM Dual-Frequency Precipitation Radar in Summer Tibetan Plateau: 《Advances in Atmospheric Sciences》2024年第11期2093-2111,共19页Yunfei FU Liu YANG Zhenhao WU Peng ZHANG Songyan GU Lin CHEN Sun NAN; funded by the National Natural Science Foundation of China project (Grant Nos.42275140, 42230612, 91837310, 92037000);the Second Tibetan Plateau Scientific Expedition and Research (STEP) program(Grant No. 2019QZKK0104)。; In this study, a new rain type classification algorithm for the Dual-Frequency Precipitation Radar(DPR) suitable over the Tibetan Plateau(TP) was proposed by analyzing Global Precipitation Measurement(GPM) DPR Level-2...; 关键词：satellite precipitation radar rain type classification method Tibetan Plateau strong convective precipitation

Dual-frequency optical-microwave atomic clocks based on cesium atoms被引量：1: 《Photonics Research》2024年第9期1972-1980,共9页TIANTIAN SHI QIANG WEI XIAOMIN QIN ZHENFENG LIU KUNKUN CHEN SHIYING CAO HANGBO SHI ZIJIE LIU JINGBIAO CHEN; Innovation Program for Quantum Science and Technology(2021ZD0303200);Wenzhou Major Science&Technology Innovation Key Project(ZG2020046);China Postdoctoral Science Foundation(BX2021020);National Natural Science Foundation of China(1436210).; 133Cs,the only stable cesium(Cs)isotope,is one of the most investigated elements in atomic spectroscopy and was used to realize the atomic clock in 1955.Among all atomic clocks,the cesium atomic clock has a special pl...; 关键词：MICROWAVE ATOMIC STABILIZED

Determination of liquid viscosity based on dual-frequency-bandparticle tracking: 《Chinese Physics B》2024年第9期359-364,共6页Lihua Yan Boyin Xue Yuanji Li Jinxia Feng Xingkang Wu Kuanshou Zhang; the National NaturalScience Foundation of China (Grant No. 62175135);theSpecial Foundation of Local Scientific and TechnologicalDevelopment Guided by Central Government (GrantNo. YDZJSX20231A006);the Fundamental ResearchProgram of Shanxi Province (Grant No. 202103021224025).; An optical-tweezers-based dual-frequency-band particle tracking system was designed and fabricated for liquid viscositydetection. On the basis of the liquid viscosity dependent model of the particle’s restricted Brow...; 关键词：liquid viscosity optical tweezers dual-frequency-band particle tracking power spectral density

Performance Evaluation of Low-Cost Dual-Frequency GNSS Receivers for Precise Positioning in Senegal: Issues and Challenges: 《Journal of Analytical Sciences, Methods and Instrumentation》2024年第2期23-37,共15页Diogoye Diouf Oustasse Abdoulaye Sall Ibrahima Khalil Gueye Fatou Ndiaye; The development of this technology has favored the advances noted in recent years in the field of precise positioning. It has also paved the way for a wide range of research into the evaluation of their performance an...; 关键词：Low-Cost GNSS NRTK Precise Positioning ISSUES CHALLENGES

Experimental and numerical study on atmospheric-pressure air dielectric barrier discharge via 50 Hz/5000 Hz dual-frequency excitation: 《High Voltage》2024年第2期391-402,共12页Junwen He Bangfa Peng Guanglin Yu Ronggang Wang Nan Jiang Jie Li Yan Wu; National Natural Science Foundation of China,Grant/Award Numbers:52177130,52377137,52107140;Industrial Prospects and Key Core Technology Projects of Suzhou City,Grant/Award Number:SYC2022029。; A dual-frequency(DF)dielectric barrier discharge,excited by the superposition of a 50 Hz low frequency(LF)and a 5000 Hz intermediate frequency(IF),is proposed to enhance discharge.The effect of the LF voltage componen...; 关键词：dielectric EXCITATION EXCITED

Fusion of Ground-Based and Spaceborne Radar Precipitation Based on Spatial Domain Regularization: 《Journal of Meteorological Research》2024年第2期285-302,共18页Anfan HUANG Leilei KOU Yanzhi LIANG Ying MAO Haiyang GAO Zhigang CHU; Supported by the National Natural Science Foundation of China(General Program)(41975027);National Key Research and Development Program(2021YFC2802502)。; High-quality and accurate precipitation estimations can be obtained by integrating precipitation information measures using ground-based and spaceborne radars in the same target area.Estimating the true precipitation ...; 关键词：dual-frequency precipitation radar(DPR) dual-polarization radar data fusion REGULARIZATION Huber norm

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