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4th International Conference on electronic information Engineering and Computer Communication, EIECC 2024

作者： Liu, Nan Chen, Shaohua Lu, Shanshan Zhang, Guangwei Xu, Wentao Hu, Xueyao Beijing Institute of Technology School of Information and Electronic Beijing China Beijing Institute of Technology Chongqing Innovation Center Chongqing China Xi'an Electronic Engineering Research Institute Xi'an China Beijing Institute of Technology Advanced Technology Research Institute Jinan China

ISBN: (纸本)9798331534622

Commercial vehicles play a pivotal role in global logistics and transportation, yet they face significant safety challenges due to their size and complex road environments. In this paper, we design a multi-radar fusion system to detect and perceive targets for Side-Bind areas, it effectively improves the accuracy of target detection and reduces the risk of blind spots. Based on the trajectory data from the radar system, threat assessment standards of commercial vehicle have been established for three zones. These standards were developed by analyzing the movement trends of the target and the host vehicle, as well as the states of motion. We can filter targets by calculating the time to collision and distance between the target and the host vehicle. The standards effectively filter potential threat in the blind area, thereby improving the safety of commercial vehicle operation. Compared with the threat assessment that only considers distance, the rationality of these threat assessment standards has been verified by actual measurement data. © 2024 IEEE.

关键词： Commercial vehicles

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Eavesdropping Area for Evaluating the Security of Wireless Communications

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China Communications 2022年第3期19卷 145-157页

作者： Xiaofeng Zhong Chenchen Fan Shidong Zhou Tsinghua University Beijing National Research Center for Information Science and Technology Department of Electronic Engineering Tsinghua UniversityBeijing 100084China

Compared with wired communication,the wireless communication link is more vulnerable to be attacked or eavesdropped because of its broadcast *** prevent eavesdropping,many researches on transmission techniques or cryptographic methods are carried *** paper proposes a new index parameter named as eavesdropping area,to evaluate the anti-eavesdropping performance of wireless *** the locations of legitimate transmitter and receiver,eavesdropping area index describes the total area of eavesdropping regions where messages can be wiretapped in the whole evaluating *** paper gives detailed explanations about its concept and deduces mathematical formulas about performance curves based on region *** key system parameters are analyzed,including the characteristics of eavesdropping region,transmitted beam pattern,beam direction,receiver sensitivity,eavesdropping sensitivity,path loss exponent and so *** proposed index can give an insight on the confirmation of high-risk eavesdropping region and formulating optimal transmitting scheme for the confidential communications to decrease the eavesdropping probability.

关键词： eavesdropping area wireless communication anti-eavesdropping performance transmitting scheme

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Satellite-Borne Fault-Tolerant Hardware Encryption for TT&C Data Secure Communication 23

Satellite-Borne Fault-Tolerant Hardware Encryption for TT&C ...

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23rd IEEE International Conference on Communication technology, ICCT 2023

作者： Sun, Haoyu Xu, Jin Yin, Liuguo Beijing National Research Center for Information Science and Technology Tsinghua University Department of Electronic Engineering Beijing China Beijing National Research Center for Information Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9798350325959

Satellite-borne data encryption is one of the main methods to ensure the security of satellite tracking, telemetry and command (TT&C) data communication. However, during the on-orbit execution of the encryption algorithm, the single event upset (SEU) may cause bit flips in memory, and the single-bit errors will spread with the execution of the algorithm, resulting in a large number of errors in the output result. To achieve reliable on-orbit encryption of satellite TT&C data, this paper proposes an efficient and reliable satellite-borne hardware design of Zu Chongzhi (ZUC) stream cipher algorithm, which is implemented on an FPGA platform. Firstly, this paper proposes an alternating processing structure of ZUC stream cipher algorithm using pipeline and 2-slow retiming techniques. This structure mitigates the efficiency degradation of the algorithm caused by the fault-tolerant structure and enhances the execution efficiency in the initialization stage and throughput of the algorithm. Secondly, to solve the problem of algorithm execution errors caused by SEU, this paper uses a Hamming code to provide register-level fault tolerance, which can correct single-bit errors of registers in time and reduce the error probability of output results. The proposed structure not only enhances the reliability of output results, but also reduces the efficiency loss caused by the fault-tolerant structure, and provides the satellite with reliable on-orbit encryption capability for TT&C data secure communication. © 2023 IEEE.

关键词： 2-slow retiming fault-tolerant code SEU TT&C data secure communication ZUC stream cipher algorithm

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Regional Tropospheric Delay Prediction Model Based on LSTM-Enhanced Encoder Network

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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 2025年 18卷 13348-13358页

作者： Peng, Yuanfang Cai, Chenglin Li, Zexian Lv, Kaihui Zhang, Xue Cai, Yihao Xiangtan University Intelligent Navigation and Remote Sensing Research Center School of Automation and Electronic Information Xiangtan411105 China Xiangtan University National Mathematics Application Center School of Automation and Electronic Information Xiangtan411105 China Xiangtan University Intelligent Navigation and Remote Sensing Research Center School of Mathematics and Computational Science Xiangtan411105 China ShanghaiTech University School of Physical Science and Technology Shanghai200031 China

Precise modeling of Zenith Tropospheric Delay (ZTD) is essential for real-time high-precision positioning in global navigation satellite systems (GNSS). Due to the stochastic variability of atmospheric water vapor across different regions, tropospheric delay exhibits strong regional characteristics. Empirical tropospheric delay models built on reanalysis of meteorological data often show significant accuracy discrepancies across regions, failing to meet the needs for precise regional ZTD forecasting. Deep learning methods excel in learning complex patterns and dependencies from time series data. Our study utilized ZTD data from 178 NGL stations in Australia during 2023 as ground truth values and modeled them using an LSTM-Enhanced encoder network. This model incorporated both spatial and temporal information as well as correlations with GPT3 ZTD. Predictions were compared with those from GPT3 ZTD, ERA5 ZTD, ANN ZTD, GRNN ZTD and LSTM ZTD. The results showed that the LSTM-Enhanced encoder ZTD achieved an RMSE of 14.43 mm, a mean bias close to zero, with mean absolute error and mean correlation coefficient of 12.42 mm and 0.95, respectively. The proposed model outperforms the GPT3, ERA5, ANN, GRNN, and LSTM models, with respective RMSE improvements of approximately 62.3%, 12.3%, 61%, 59.9%, and 60%. In addition, we compared the spatial and temporal properties of the proposed model with those of the GPT3 model and the ERA5 model. The discussion section further analyzed the prediction performance of different neural network approaches under different prediction periods. © 2008-2012 IEEE.

关键词： Troposphere

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Parent-Child Co-Creation of Story With Augmented Reality

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Journal of Educational Media and Library Sciences 2023年第2期60卷 119-148页

作者： ChanLin, Lih-Juan Department of Library & Information Science Research and Development Center for Physical Education Health and Information Technology Fu Jen Catholic University New Taipei City Taiwan

The study explores the integration of augmented reality (AR) into parent-child co-creation of AR stories. Beyond traditional oral and written texts, AR stories can be created with diverse use of media. The design process also invites creative thinking among family members. To encourage creativity and narrative skills development among children, a parent-child AR story-creation activity was provided to families. Several research issues were studied: 1. How did the parents and children generate their story ideas and integrate their story ideas into the AR platform? 2. How did parents scaffold children’s creation process? 3. What were the obstacles experienced in this form of storytelling, and what did parents and children achieve from the process? Observations and story portfolios were gathered in the study. In-depth interview data were collected from parents and children. Inductive analysis was used for summarizing the research findings. Findings of the study are categorized as the following themes for the creation process: “creating ideas for stories”, “immersive storytelling with AR”, “parents’ scaffolding”, “coping with obstacles”, and “achieving from experiencing”. The integration of AR encouraged children to enjoy the innovative form of storytelling. In future implementations, AR story creation might be tuned to meet individual needs in creating their life stories. Extending AR story creation to a broader scope of subjects and application is also expected. © (2023). All Rights Reserved.

关键词： Augmented reality Community engagement Parent-child story creation Storytelling technology-mediated creation

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Non-Hermitian polarization quantized by time-reversal symmetry

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Science China(Physics,Mechanics & Astronomy) 2024年第12期67卷 141-147页

作者： Jing Cheng Jinbing Hu Zhigao Hu Lin Chen Minghui Lu Songlin Zhuang Technical Center for Multifunctional Magneto-Optical Spectroscopy(Shanghai) Engineering Research Center of Nanophotonics&Advanced Instrument(Ministry of Education)Department of Physics and Electronic ScienceEast of China Normal UniversityShanghai200241China College of Optical-Electrical Information and Computer Engineering University of Shanghai for Science and TechnologyShanghai200093China Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan430074China National Laboratory of Solid State Microstructures Science and Engineering Nanjing UniversityNanjing210093China

It is well known that in one-dimensional(1D) crystalline insulators,the electric polarization is a manifestation of Berry phase,which can not be quantized by time-reversal symmetry(TRS) as in Hermitian physics TRS does not induce any topological phase in one *** this paper we report that even though associated with complex eigenenergies a 1D non-Hermitian insulator obeying only TRS is capable of presenting quantized bulk *** underlying physical reason is unveiled:TRS guarantees the complex energies to come in pair(E,E*),and the corresponding decaying and amplifying wave functions also come in pair and have the same variation rate,hence,giving rise to a stable wannier *** electron transport is performed by means of charge pumping process,which verifies the physical mechanism *** last,we discuss the possible experimental implementation of the proposed model by means of twisted-π gauge flux.

关键词： non-Hermitian polarization time-reversal symmetry complex hopping

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Structure,far-infrared spectroscopy,microwave dielectric properties,and improved low-temperature sintering characteristics of tri-rutile Mg_(0.5)Ti_(0.5)TaO_(4) ceramics

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Journal of Advanced Ceramics 2023年第2期12卷 296-308页

作者： Hongyu YANG Liang CHAI Guangchao LIANG Mengjiang XING Zixuan FANG Xing ZHANG Tianying QIN Enzhu LI Academy of Advanced Interdisciplinary Research Xidian UniversityXi’an 710071China National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 610054China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Sichuan Province Key Laboratory of Information Materials and Devices Application Chengdu University of Information TechnologyChengdu 610225China

In this study,tri-rutile type Mg_(0.5)Ti_(0.5)TaO_(4) ceramics were synthesized,where the structure–property relationship,especially the structural configuration and intrinsic dielectric origin of Mg_(0.5)Ti_(0.5)TaO_(4) ceramics,and the low-firing characteristics were *** is found that the tri-rutile structural type is unambiguously identified through the Rietveld refinement analysis,the selected area electron diffraction(SAED),and the high-resolution transmission electron microscopy(HRTEM)along the[110]zone *** the increase in sintering temperature,the densification and uniformity of crystal growth play important roles in regulating the microwave dielectric properties of Mg_(0.5)Ti_(0.5)TaO_(4) ***,theoretical dielectric properties calculated by the far-infrared reflective spectra approached the experimental values,indicating the importance of structural features to dielectric ***,a glass additive with high matching relevance with ceramics has been developed to decrease the high sintering temperature of Mg_(0.5)Ti_(0.5)TaO_(4) ceramics,where 2–4 wt%Li_(2)O–MgO–ZnO–B_(2)O_(3)–SiO_(2)(LMZBS)glass frit was adopted to reduce the suitable temperature from 1275 to 1050℃ without significantly deteriorating the microwave dielectric ***,Mg_(0.5)Ti_(0.5)TaO_(4) ceramics containing 2 wt% glass addition sintered at 1050℃for 4 h possess excellent microwave dielectric properties:dielectric constant(ε_(r))=44.3,quality factor multiplied by resonant frequency(Q×f)=23,820 GHz(f=6.2 GHz),and the temperature coefficient of resonant frequency(τ_(f))=123.2 ppm/℃.

关键词： Mg0.5Ti0.5TaO4 ceramics crystal structure low-temperature sintering

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A Comprehensive Survey on Joint Resource Allocation Strategies in Federated Edge Learning

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Computers, Materials & Continua 2024年第11期81卷 1953-1998页

作者： Jingbo Zhang Qiong Wu Pingyi Fan Qiang Fan School of Internet of Things Engineering Jiangnan UniversityWuxi214122China Department of Electronic Engineering Beijing National Research Center for Information Science and TechnologyTsinghua UniversityBeijing100084China Qualcomm San JoseCA 95110USA

Federated Edge Learning(FEL),an emerging distributed Machine Learning(ML)paradigm,enables model training in a distributed environment while ensuring user privacy by using physical separation for each user’s ***,with the development of complex application scenarios such as the Internet of Things(IoT)and Smart Earth,the conventional resource allocation schemes can no longer effectively support these growing computational and communication ***,joint resource optimization may be the key solution to the scaling *** paper simultaneously addresses the multifaceted challenges of computation and communication,with the growing multiple resource *** systematically review the joint allocation strategies for different resources(computation,data,communication,and network topology)in FEL,and summarize the advantages in improving system efficiency,reducing latency,enhancing resource utilization,and enhancing *** addition,we present the potential ability of joint optimization to enhance privacy preservation by reducing communication requirements,*** work not only provides theoretical support for resource management in federated learning(FL)systems,but also provides ideas for potential optimal deployment in multiple real-world *** thoroughly discussing the current challenges and future research directions,it also provides some important insights into multi-resource optimization in complex application environments.

关键词： Federated edge learning resource allocation communication resource computing resource network topology

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Design of smart flowerpot based on lightweight plant disease detection model 24

Design of smart flowerpot based on lightweight plant disease...

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3rd International Conference on Computer, Artificial Intelligence and Control Engineering, CAICE 2024

作者： Zhang, Jianliang Ding, Yong Huang, Jianhao Chen, Meiji School of Information and Communication Guilin University of Electronic Technology Guilin China State and Local Joint Engineering Research Center for Satellite Navigation and Location Service Guilin University of Electronic Technology Guilin China

ISBN: (纸本)9798400716942

The application of neural networks in embedded systems is currently a hot topic in artificial intelligence research. In the design of the smart flowerpot based on soilless cultivation, a lightweight plant disease detection scheme is proposed in this paper. The proposed scheme cascades a new lightweight model FOMO with a lightweight convolutional neural network model MobileNetV2 for plant disease detection. The proposed scheme can meet the design requirements for plant disease detection performance and can be successfully deployed in the embedded system with STM32 as its core. Plant disease detection is innovatively integrated into the smart flowerpot designed, which improves the level of intelligent control and management. © 2024 ACM.

关键词： Embedded systems

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Near-field wideband beam training for ELAA with uniform circular array

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Science China(information Sciences) 2024年第6期67卷 370-383页

作者： Yuhao CHEN Linglong DAI Department of Electronic Engineering Tsinghua UniversityBeijing National Research Center for Information Science and Technology (BNRist)

Extremely large-scale antenna array(ELAA) at millimeter wave(mmWave) and Terahertz(THz)band has been considered a key technology for combating high attenuation in high-frequency bands in future6G communications. Uniform circular arrays(UCAs) have attracted much attention because of their ability to provide flat beamforming gain at all angles. To realize efficient beamforming, beam training is widely used to acquire channel state information. However, with a large antenna number, the beam training overhead in ELAA systems becomes overwhelming. Moreover, with a large bandwidth, the beam defocus effect severely degrades beam training accuracy. To address these issues, this paper proposes a frequency-dependent focusing(FDF)-based beam training scheme to realize effective beam training in near-field wideband ELAA systems with UCA. Specifically, we first analyze the FDF property of UCA, where signals at different subcarriers can simultaneously focus on different distances. Then, by exploiting the FDF property to search different distances using different subcarriers simultaneously, we design a hierarchical codebook and propose an FDFbased beam training scheme. To reveal the effectiveness of the proposed scheme, we compare its necessary beam training overhead with that of existing schemes. Finally, the simulation results demonstrate that the proposed scheme can achieve accurate beam training in near-field wideband UCA systems with a low beam training overhead.

关键词： extremely large-scale antenna array (ELAA) uniform circular array (UCA) near-field wideband beam training

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