RAY-TRACING

作品数：42被引量：54H指数：4
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相关领域：电子电信更多>>
相关作者：孙永健于春山曹洋森张火俊王慧敏更多>>
相关机构：第二军医大学上海交通大学苏州智行众维智能科技有限公司南京大学更多>>
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Latitudinal distribution and propagation of lightning-generated whistler:A statistical study by Van Allen Probes observation and ray-tracing simulation
《Science China Earth Sciences》2025年第4期1291-1297,共7页Zhaoguo HE Jiang YU Xiangling DING Zuzheng CHEN Nigang LIU Yuguang YE Jun CUI Qiugang ZONG 
supported by the National Natural Science Foundation of China(Grant Nos.42422406,42174185,42474209);the Science and Technology Development Fund,Macao SAR(Grant Nos.0042/2024/RIA1,0176/2023/RIA3,0008/2024/AKP and 002/2024/SKL);the Guangdong Basic and Applied Basic Research Foundation(Grant No.2024A1515012093)。
Lightning-generated whistler(LGW)is an important electromagnetic wave in the magnetosphere,causing energetic electron losses.Here we analyze the LGW distribution and propagation using Van Allen Probes data and ray-tra...
关键词：Lightning-generated whistler Ray-tracing model Magnetosphere Wave distribution Wave propagation 
Cost-Effective Federated Learning-Based Approach for SINR Prediction in Cellular-Connected UAVs
《Journal of Communications and Information Networks》2024年第4期374-389,共16页Ibrahem Mouhamad Dushantha Nalin K.Jayakody Dejan Vukobratovic 
supported in part by the Scheme for Promotion of Academic&Research Collaboration(SPARC),Government of India under Grant SPARC/2024-2025/NXTG/P3524;in part by the COFAC-Cooperativa de Formacao e Animacao Cultural,C.R.L.(University of Lusofona University),via the Project PortuLight(COFAC/ILIND/COPELABS/2/2023);in part by the National Funds through FCT-Fundacao para a Ciencia e a Tecnologia-as part of the project AIEE-UAV under Grant 2022.03897;PTDC,CEECINST/00002/2021/CP2788/CT0003;COPELABS under Grant UIDB/04111/2020;by the European Commission via Marie Skłodowska-Curie Actions(MSCA)as part of the Project REMARKABLE under Grant 101086387.
This study introduces a novel approach to empower cellular-connected unmanned aerial vehicles(UAVs)in predicting signal quality.The proposed prediction model leverages data collected by the UAVs,addressing privacy con...
关键词：federated learning unmanned aerial vehicle convolutional neural network RAY-TRACING signal-tointerference-plus-noise ratio 
Evolution of light deflection and shadow from a gauge-potential-like AdS black hole under the influence of a non-magnetic plasma medium
《Communications in Theoretical Physics》2024年第9期83-94,共12页Riasat Ali Xia Tiecheng Muhammad Awais Rimsha Babar 
funded by the National Natural Science Foundation of China 11975145。
We investigate the light deflection in the weak field approximation from the accelerating charged AdS black hole.For this purpose,we apply the Gauss–Bonnet theorem to calculate the light deflection in the weak field ...
关键词：accelerating charged Ad S black hole Gibbons-Werner approach deflection angle ray-tracing approach SHADOW 
An initial investigation of the non-isotropic feature of GNSS tropospheric delay被引量：2
《Satellite Navigation》2024年第1期155-167,共13页Ying Xu Zaozao Yang Hongzhan Zhou Fangzhao Zhang 
supported by the National Natural Science Foundation of China(No.42174035).
Tropospheric delay is a significant error source in Global Navigation Satellite Systems(GNSS)positioning.Slant Path Delay(SPD)is commonly derived by multiplying Zenith Tropospheric Delay(ZTD)with a mapping function.Ho...
关键词：Tropospheric delay GNSS Non-isotropy Mapping function RAY-TRACING Horizontal gradient ERA5 
M3SC:A Generic Dataset for Mixed Multi-Modal(MMM)Sensing and Communication Integration被引量：5
《China Communications》2023年第11期13-29,共17页Xiang Cheng Ziwei Huang Lu Bai Haotian Zhang Mingran Sun Boxun Liu Sijiang Li Jianan Zhang Minson Lee 
This work was supported in part by the Ministry National Key Research and Development Project(Grant No.2020AAA0108101);the National Natural Science Foundation of China(Grants No.62125101,62341101,62001018,and 62301011);Shandong Natural Science Foundation(Grant No.ZR2023YQ058);the New Cornerstone Science Foundation through the XPLORER PRIZE.The authors would like to thank Mengyuan Lu and Zengrui Han for their help in the construction of electromagnetic space in Wireless InSite simulation platform and Weibo Wen,Qi Duan,and Yong Yu for their help in the construction of phys ical space in AirSim simulation platform.
The sixth generation(6G)of mobile communication system is witnessing a new paradigm shift,i.e.,integrated sensing-communication system.A comprehensive dataset is a prerequisite for 6G integrated sensing-communication ...
关键词：multi-modal sensing RAY-TRACING sensing-communication integration simulation dataset 
A Rigorous Analysis of Vehicle-to-Vehicle Range Performance in a Rural Channel Propagation Scenario as a Function of Antenna Type and Location via Simulation and Field Trails
《China Communications》2023年第11期131-141,共11页Ran Liu Daniel N.Aloi 
Vehicle-to-Everything(V2X) communications will be an essential part of the technology in future autonomous drive decision systems.A fundamental procedure is to establish a robust communication channel between end-to-e...
关键词：antenna simulation and measurement propagation channel modeling ray-tracing simula-tion V2V scenario propagation 
Ray-tracing simulations of whistler-mode wave propagation in different rescaled dipole magnetic fields
《Earth and Planetary Physics》2022年第6期555-562,共8页YangGuang Ke QuanMing Lu XinLiang Gao HuaYue Chen Rui Chen 
supported by the National Natural Science Foundation of China (Grant No. 42104155);the China Postdoctoral Science Foundation (Grant No. 2021M693049);the Fundamental Research Funds for the Central Universities (Grant Nos. WK2080000150 and WK3420000013);the USTC (University of Science and Technology of China) Tang Scholar Program
Kinetic simulation is a powerful tool to study the excitation and propagation of whistler-mode waves in the Earth’s inner magnetosphere.This method typically applies a scaled-down dipole magnetic field to save comput...
关键词：whistler wave ray tracing propagation dipole magnetic field MAGNETOSPHERE 
Effect of the Relative Position with Gaussian Beam Center and Droplet Center on Optical Caustics
《Journal of Applied Mathematics and Physics》2022年第5期1495-1508,共14页Yutong Hao 
In this paper, a vector ray-tracing model (VRT) is used to simulate the optical caustic structures associated with the secondary rainbow for an ellipsoidal droplet illuminated by a Gaussian beam. The optical caustics ...
关键词：Vector Ray-Tracing Model Optical Caustics Gaussian Beam RAINBOW 
Implementation Framework and Validation of Cluster-Nuclei Based Channel Model Using Environmental Mapping for 6G Communication Systems被引量：4
《China Communications》2022年第4期1-13,共13页Li Yu Yuxiang Zhang Jianhua Zhang Zhiqiang Yuan 
supported by National Science Fund for Distinguished Young Scholars (No.61925102);Beijing University of Posts and TelecommunicationsChina Mobile Research Institute Joint Innovation Center。
With the research of the upcoming sixth generation(6 G) systems, new technologies will require wider bandwidth, larger scale antenna arrays and more diverse wireless communication scenarios on the future channel model...
关键词：channel model 6G cluster-nuclei environmental mapping SCATTERER RAY-TRACING geometrybased stochastic model 
Accuracy of optimized Sirius ray-tracing method in intraocular lens power calculation被引量：2
《International Journal of Ophthalmology(English edition)》2022年第2期228-232,共5页Li-Qing Wei Ying-Hui Fu Wei-Hua Pan Li Nie Yu Chen Gui-Fang Liu Zhen-Bin Qian 
Supported by the Basic Scientific Research Project of Wenzhou (No.2020Y0599)。
AIM:To evaluate the accuracy and predictability of ray tracing-assisted intraocular lens(IOL) calculation function in Sirius internal software and further improve the accuracy by optimizing the calculation of predicte...
关键词：Sirius RAY-TRACING IOL-MASTER CATARACT refractive error predicted IOL position 
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