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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Huang, Zheng Wang, Conghe Shi, Wanxin Wu, Shukai Yang, Sigang Chen, Hongwei Beijing National Research Center for Information Science and Technology Beijing China Department of Electronic Engineering Tsinghua University Beijing China

We present a compact multi-layer optical convolutional neural network for pre-sensor computing with nonlinear activation by masks and an image intensifier. This can off-load 83.1% computation to optics and achieve com... 详细信息

ISBN: (纸本)9781957171395

关键词： Convolutional neural networks

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Spatio-Temporal-Interaction Graph Neural Networks for Multi-Agent Trajectory Prediction 8

Spatio-Temporal-Interaction Graph Neural Networks for Multi-...

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2024 8th International Conference on Data Mining, Communications and information technology, DMCIT 2024

作者： Cui, Zhoujuan Peng, Wenshuo Zhang, Yaqiang Duan, Yiping Tao, Xiaoming Department of Electronic Engineering Tsinghua University Beijing China Beijing National Research Center for Information Science and Technology Beijing China

For intelligent transportation systems, accurately forecasting the future trajectories of multiple agents is pivotal. Considering the increased diversity of agents within a scene, in order to capture and model the variations in their appearance, motion status, behavioral patterns, and interrelationships, we propose a simple yet effective framework based on Spatio-Temporal-Interaction Graph Neural Networks. Specifically, a Multi-Class Agent Encoder is meticulously tailored to the specific class of each agent to distill pertinent information from their motion attributes and historical trajectories. Subsequently, a Spatio-Temporal-Interaction Graph Attention Module is constructed to productively represent and learn the complex, dynamic interactions. Finally, a Multimodal Trajectory Generation Module is customized, and a learnable diversity sampling function is introduced to map the features of each agent to a set of potential variables, so as to capture the multimodal distribution of future trajectories. Empirical evaluations on the ETH/UCY and KITTI datasets reveal that our method can efficiently improve the accuracy of trajectory prediction. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Trajectories

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Optimal Design of UAVs Leader-Following Consensus Formation Control Based on Riccati Equation 42

Optimal Design of UAVs Leader-Following Consensus Formation ...

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42nd Chinese Control Conference, CCC 2023

作者： Zhu, Xu Huang, Jiangtao Zhang, Sheng Wang, Zhengning School of Communication & Information Engineering University of Electronic Science and Technology of China Chengdu610095 China Aerospace Technology Institute China Aerodynamics Research and Development Center Mianyang621000 China

ISBN: (纸本)9789887581543

Formation control is one of the key technologies for UAV swarm operation. With the growth of the formation scale, the computation and communication among the UAVs based on the centralized control will increase exponentially. The leader-following strategy, based on the distributed consensus formation control theory, may effectively alleviate this problem, and improve the reliability and safety of UAV formation flight. Since the values of the control gains directly affect the flight quality of the UAV formation, the determination of reasonable control gains is a key problem in the consensus formation control. To solve this problem, based on the Linear Quadratic Regulator (LQR) control theory and the Riccati equation, the feedback control gains are optimized to generate the optimal trajectory commands for the UAVs, including the velocity magnitude, the flight path angle, and the heading angle commands. It is shown that the optimized consensus controller realizes the rapid formation flight control of the UAVs, with smooth control commands. © 2023 Technical Committee on Control Theory, Chinese Association of Automation.

关键词： Unmanned aerial vehicles (UAV)

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Detecting to Distinguish the Origin of Radix Bupleuri Based on Ultraviolet to Mid Infrared Spectroscopy

Detecting to Distinguish the Origin of Radix Bupleuri Based ...

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2023 Cross Strait Radio Science and Wireless technology Conference, CSRSWTC 2023

作者： Shu, Jie Xu, Wei Huang, Minjian Zeng, Zikun Zhu, Gang Xi, Hongzhu Anhui Huadong Optoelectronics Technology Research Institute Corporation Research and Development Center Wuhu241000 China School of Physics and Electronic Information Anhui Normal University Wuhu241000 China

ISBN: (纸本)9798350358971

The quality and efficacy of bupleurum are affected by different natural environments such as soil, climate and water source in different places. This article conducts spectral detection research on radix bupleuri from different regions based on ultraviolet to mid infrared spectroscopy technology. The ultraviolet to mid infrared fingerprint feature maps of radix bupleuri were obtained. By analyzing and comparing the fingerprint feature maps of radix bupleuri from different regions, it was found that the characteristic peaks in the fingerprint feature maps of radix bupleuri are obvious and the consistency of the characteristic peaks of radix bupleuri from different regions is good. There are certain differences in optical density, and different optical densities can be used to distinguish radix bupleuri from different regions. The above work provides important basis for the identification of radix bupleuri from different regions. In addition, it provides detection methods and reference basis for enriching the quality standards of traditional Chinese medicine. © 2023 IEEE.

关键词： Infrared spectroscopy Quality control Traditional Chinese medicine traceability Ultraviolet Visible light

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Design of Reconfigurable Symmetrical Double-Beam Holographic Antenna

Design of Reconfigurable Symmetrical Double-Beam Holographic...

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2024 International Conference on Intelligent Communication, Sensing and Electromagnetics, ICSE 2024

作者： Li, Yue Song, Su-Li School of Electronic and Information Engineering South China University of Technology SCUT Guangzhou China South China University of Technology SCUT Information Network Engineering and Research Center Guangzhou China

ISBN: (纸本)9798350354935

In this paper, the influence of reflected wave on the radiation performance of holographic antenna is analyzed, and a double-beam holographic antenna is designed. The proposed antenna etches slots on the SIW waveguide and loads PIN diodes to achieve dynamic modulation. By introducing a reflected wave through a short circuit at the end of the waveguide, the reflected wave excites the holographic surface of the incident wave to generate a beam direction that is symmetric about the Z-axis. The proposed antenna is excited by a single feeding and shares the same aperture, and has the characteristics of simple structure and high aperture efficiency. © 2024 IEEE.

关键词： Antenna feeders

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Performance Evaluation for 5G NR Communication System based on OpenAirInterface

Performance Evaluation for 5G NR Communication System based ...

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2024 International Conference on Electrical Engineering and Photonics, EExPolytech 2024

作者： Ye, Yongjun Pan, Changyong Zhang, Chao Wang, Jun Tsinghua University Beijing China Beijing National Research Center for Information Science and Technology Department of Electronic Engineering Beijing China

ISBN: (纸本)9798350388879

With the freeze of 3GPP Release 15 protocols, the world has entered the 5G commercial era. In recent years, major communication companies and organizations have set up project groups for IMT-2030 to put forward proposals on the 6G consideration of ongoing development, in which case the existing 5G new radio technology needs to be thoroughly verified. This paper, based on the software-defined radio (SDR) open source platform OpenAirInterface (OAI), provides a laboratory verification platform for 5G NR to evaluate the system performance in typical channel models. It provides a straightforward and flexible way of verifying the connectivity effect between the 5G core network (5GC), next Generation Node Base station (gNB) and User Equipment (UE) by visualization means such as software oscilloscopes. © 2024 IEEE.

关键词： 5G mobile communication systems

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An Application Level Synchronization Method for Heterogeneous Redundant Structures 21

An Application Level Synchronization Method for Heterogeneou...

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21st IEEE International Symposium on Parallel and Distributed Processing with Applications, 13th IEEE International Conference on Big Data and Cloud Computing, 16th IEEE International Conference on Social Computing and Networking and 13th International Conference on Sustainable Computing and Communications, ISPA/BDCloud/SocialCom/SustainCom 2023

作者： Yu, Hong Liu, Qinrang Cui, Chao Wei, Shuai Information Engineering University Information & Technology Research Center Zhengzhou China Phytium Technology Co. Ltd. Software Research & Development Department Tianjin China

ISBN: (纸本)9798350329223

In heterogeneous redundant architecture devices, programs with equivalent functions are implemented on heterogeneous executers, and the scheduler needs to compare their outputs to identify abnormality and decide the final output. Due to slight differences in the scheduling order of threads among different executers, the outputs of programs are likely to be different, which will have a significant impact on the arbitration of the scheduler, causing false error report and affecting the normal processing. We propose an application-level state synchronization method model to effectively mitigate the problem of program state synchronization of multiple heterogeneous executers. And we implemented a hardware-software codesign of the method in a DHRA switch and tested its effectiveness and latency. Tests show that the method is effective with latency within several milliseconds. © 2023 IEEE.

关键词： Application programs

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Study on the vertical deformations induced by terrestrial water storage changes in Huang-Huai-Hai river basin

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Geodesy and Geodynamics 2024年第4期15卷 352-365页

作者： Liansheng Deng Yugang Xiao Qusen Chen Feifei Liao Zhao Li School of Electrical and Electronic Information Engineering Hubei Polytechnic UniversityHuangshi 435003China Hubei Luojia Laboratory GNSS Research CenterWuhan UniversityWuhan 430079.China Changjiang Spatial Information Technology Engineering Co. Ltd.Wuhan 430010China

Terrestrial water storage(TWs)variations are associated with water mass movements,which may cause the deformation displacements of the Global Navigation Satellite System(GNSS)*** study investigates the spatio-temporal Tws variations and addresses the relationship between deformation variations observed in the Huang-Huai-Hai River Basin(HHHRB)and local hydrological *** indicate that the vertical velocities at the GNSS stations induced by TWS changes are relatively small,and the impacts of the terrestrial water storage changes are mainly reflected in the changes of seasonal *** there is a downward TWS trend from 2011 to 2022 in most HHHRB areas,velocities from the vertical displacements of both Gravity Recovery and Climate Experiment(GRACE)and GRACE Follow-On(GFO)and the GNSS reflect that the HHHRB is undergoing an uplift process,while the magnitude of the GRACE/GFO derived velocities is much smaller than that of the GNSS *** hydrological deformations estimated from GRACE/GFO and GNSS measurements reveal that the TWS-derived displacements can explain 54.5%of the GNSS seasonal variations,with the phases of terrestrial water storage advancing by about one month relative to GNss common signal ***,the decrease of the groundwater storage in the HHHRB has been accelerating since *** reaching its lowest level around mid-2020,it began to rise rapidly,which might be closely related to the implementation of the South-North Water Transfer Central Project.

关键词： Terrestrial waterstorage GRACE GNSS Vertical deformations Huang-Huai-Hairiverbasin

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Time-Domain Analysis of Body Freedom Flutter Based on 6DOF Equation

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Computer Modeling in Engineering & Sciences 2024年第1期138卷 489-508页

作者： Zhehan Ji Tongqing Guo Di Zhou Zhiliang Lu Binbin Lyu Key Laboratory of Unsteady Aerodynamics and Flow Control Ministry of Industry and Information TechnologyNanjing University of Aeronautics and AstronauticsNanjing210016China High Speed Aerodynamics Institute China Aerodynamics Research and Development CenterMianyang621000China

The reduced weight and improved efficiency of modern aeronautical structures result in a decreasing separation of frequency ranges of rigid and elastic ***,a high-aspect-ratio flexible flying wing is prone to body freedomflutter(BFF),which is a result of coupling of the rigid body short-periodmodewith 1st wing *** prediction of the BFF characteristics is helpful to reflect the attitude changes of the vehicle intuitively and design the active flutter suppression control *** of using the rigid body mode,this work simulates the rigid bodymotion of the model by using the six-degree-of-freedom(6DOF)equation.A dynamicmesh generation strategy particularly suitable for BFF simulation of free flying aircraft is *** accurate Computational Fluid Dynamics/Computational Structural Dynamics/six-degree-of-freedom equation(CFD/CSD/6DOF)-based BFF prediction method is ***,the time-domain CFD/CSD method is used to calculate the static equilibrium state of the *** on this state,the CFD/CSD/6DOF equation is solved in time domain to evaluate the structural response of *** combinedwith the variable stiffnessmethod,the critical flutter point of the model is *** method is applied to the BFF calculation of a flyingwing *** calculation results of the BFF characteristics of the model agree well with those fromthe modalmethod andNastran ***,the method is used to analyze the influence factors of *** analysis results show that the flutter speed can be improved by either releasing plunge constraint or moving the center ofmass forward or increasing the pitch inertia.

关键词： Body freedom flutter time-domain CFD/CSD/6DOF method dynamic mesh generation strategy aeroelasticity

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A Reserved Pricing Mechanism for Nano/Peco Smart Grid Peer-to-Peer Energy Trading 3

A Reserved Pricing Mechanism for Nano/Peco Smart Grid Peer-t...

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3rd International Conference on Emerging Trends in Electrical, Control, and Telecommunication Engineering, ETECTE 2024

作者： Nazir, Iqra Mushtaq, Nermish Ziafat, Bushra Fareed, Muhammad Faiz Amin, Waqas School of Information Engineering Southwest University of Science and Technology Mianyang China Center for Energy Research and Development University of Engineering and Technology KSK Campus Pakistan

ISBN: (纸本)9798331504861

This work introduces a Nano/Pico smart grid energy market model where a market operator (MO) manages price determination for local peer-to-peer (P2P) energy trading among distributed energy resource (DER) sellers and buyers. The MO determines trading prices based on reserved pricing models, factoring in the minimum and maximum price ranges proposed by sellers and buyers. In this framework, the MO calculates the supply-to-demand ratio (SDR) to classify the market into buyers’, sellers’, or equilibrium modes. The objective is to minimize buyers’ bills or maximize sellers’ revenues depending on the market mode. The model’s effectiveness is evaluated using a dataset from a small community with five buyers and five sellers. Comparative analysis with existing methods demonstrates that the proposed model significantly enhances sellers’ profitability and provides substantial savings for buyers. Through the simulation results it is worth noting that the proposed model increases the revenues of the sellers from 17% to 7% compared with the other state-of-the-art methods. Whereas, energy bills for the buyers can also be reduced from 24% to 12%. This percentage increase in revenues and reduction in energy bills validates the proposed model’s efficiency and effectiveness compared to the other state-of-the-art methods. ©2024 IEEE.

关键词： Marketplaces

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