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IEEE International Conference on Radar

作者： Xin Chang Yanbin Li Yan Zhao Yufeng Du Donghui Liu Jun Wan Electronics Technology Group Corporation (CETC54) Hebei Key Laboratory of Electromagnetic Spectrum Cognition and Control The 54th Research Institute of China Shijiazhuang China Electronics Technology Group The 54th Research Institute of China Corporation (CETC54) Shijiazhuang China School of Economics and Management Shijiazhuang Tiedao University Shijiazhuang China Chongqing Key Laboratory of Space Information Network and Intelligent School of Microelectronics and Communication Engineering Chongqing University Information Fusion Chongqing University Chongqing China

ISBN: (纸本)9781665468893

To reduce difficulty of obtaining jamming parameters, combining scattered wave deception jamming method structure with genetic algorithm, a scattered wave deceptive jamming method based on genetic algorithm is proposed against three Channel SAR GMTI. Four-dimensional jamming parameter searching problem is separated as a one-dimensional optimization problem and a two-dimensional optimization problem, which will reduce computational burden and jamming parameter acquirement time and raise fidelity of deceptive jamming. In addition, the problem, that tolerance of Doppler rate mismatch is difficult to describe, is solved by transforming an objective function of the two-dimensional optimization problem. By utilizing jamming quality parameters, simulation experiments are provided to verify the effectiveness of SGA method against the three-channel SAR GMTI.

关键词： Azimuth Computational modeling Radar antennas Search problems Linear programming Doppler effect Jamming

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Limitations on sharing bell nonlocality between sequential pairs of observers

arXiv

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arXiv 2021年

作者： Cheng, Shuming Liu, Lijun Baker, Travis J. Hall, Michael J.W. The Department of Control Science and Engineering Tongji University Shanghai201804 China Shanghai Institute of Intelligent Science and Technology Tongji University Shanghai201804 China Institute for Advanced Study Tongji University Shanghai200092 China College of Mathematics and Computer Science Shanxi Normal University Linfen041000 China Centre for Quantum Computation and Communication Technology Australian Research Council Centre for Quantum Dynamics Griffith University BrisbaneQLD4111 Australia Department of Theoretical Physics Research School of Physics Australian National University CanberraACT0200 Australia

We give strong analytic and numerical evidence that, under mild measurement assumptions, two qubits cannot both be recycled to generate Bell nonlocality between multiple independent observers on each side. This is surprising, as under the same assumptions it is possible to recycle just one of the qubits an arbitrarily large number of times [P. J. Brown and R. Colbeck, Phys. Rev. Lett. 125, 090401 (2020)]. We derive corresponding 'one-sided monogamy relations' that rule out two-sided recycling for a wide range of parameters, based on a general tradeoff relation between the strengths and maximum reversibilities of qubit measurements. We also show if the assumptions are relaxed to allow sufficiently biased measurement selections, then there is a narrow range of measurement strengths that allows two-sided recycling for two observers on each side, and propose an experimental test. Our methods may be readily applied to other types of quantum correlations, such as steering and entanglement, and hence to general information protocols involving sequential measurements. Copyright © 2021, The Authors. All rights reserved.

关键词： Recycling

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LOS/NLOS Channel Identification technology Based on CNN

LOS/NLOS Channel Identification Technology Based on CNN

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National Foundation for Science and technology Development Conference on Information and Computer Science (NICS)

作者： Fei Wang Zhan Xu Ruxin Zhi Jinhui Chen Peiyue Zhang School of Information and Communication Engineering Beijing Information Science and Technology University Beijing China Key Laboratory of Modern Measurement & Control Technology Beijing Information Science & Technology University Beijing China

ISBN: (数字)9781728151632

ISBN: (纸本)9781728151649

In the field of indoor positioning, ultra-wideband (UWB) communication technology is the key technology. But the errors caused by non-line of sight (NLOS) communication channels could greatly affect the positioning accuracy. Therefore, identifying the channel type can effectively avoid the above-mentioned errors, thereby helping to reduce the loss of positioning accuracy. This paper proposes a LOS/NLOS channel identification method by using a convolutional neural network (CNN) to identifying the impulse response figures of the channels. This method is capable of identifying four different types of channel impulse response figures and providing excellent identification accuracy. The results show that the accuracy of identifying LOS (0-4m), NLOS (0-4m), NLOS (4-10m) and extreme NLOS channel impulse response figures can reach 98.24%.

关键词： Delays Training Support vector machines IEEE 802.15 Standard Computer science Channel models

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Weak Signal Detection with Duffing Oscillator Based on Circular Boundary Counting Method and STFT State Identification Parameter

Weak Signal Detection with Duffing Oscillator Based on Circu...

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2019 2nd International Conference on Electrical and Electronic engineering（EEE 2019）

作者： Zhi-qiang ZHU Rui-li JIA Xiao-peng YAN Ke WANG Jian HOU Science and Technology on Electromechanical Dynamic Control Laboratory School of Mechatronical Engineering Beijing Institute of Technology Beijing Jinghang Research Institute of Computing and Communication

To solve the problem of quantitative identification of the state of Duffing oscillator and determination of the critical threshold of reference amplitude, a combined weak signal detection method is proposed in this paper. The STFT statistical characteristics of Duffing oscillator in chaotic state, intermittent state and large-scale periodic state is analyzed and based on it the state identification parameter is selected to quantitatively present the state of Duffing oscillator. The step change of the number of the phase points on the boundary of circular regions in the phase plane is shown and the circular boundary counting method is proposed to determine the critical threshold. Based on above research, the algorithm of the combined weak signal detection is given, which uses Runge-Kutta algorithm to calculate the Duffing system. Simulation results show that this combined method is not only accurate at low SNR, but also robust when noise condition is variable.

关键词： Weak signal detection Duffing oscillator Circular boundary counting method State identification Determining critical value

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control method for EV charging and discharging in V2G/V2H scenario based on the synchronvter technology and H∞ repetitive control

Control method for EV charging and discharging in V2G/V2H sc...

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作者： Liu, Dongqi Zeng, Xiangjun Liu, Guorong Hunan Province Key Laboratory of Smart Grids Operation and Control Changsha University of Science and Technology Changsha China College of Electrical and Information Engineering Hunan University Changsha China School of Computer and Communication Hunan Institute of Engineering Xiangtan China

Electric vehicles (EVs) will play a vital role in the future's transportation systems since this technology is promising for environment, energy security, and improved fuel economy. EVs have huge potential of serving as the energy storage for the power grid as well as inhabitants in vehicle-to-grid (V2G) or vehicle-to-house (V2H) scenario. In this study, a control method is proposed for EV charging and discharging by using the synchronverter technology and H∞ repetitive controller, where synchronverter technology is used to generate the reference voltage to decide the power angle and amplitude of the AC side voltage of the charging/discharging port, so that the power flow between EV and the grid is controlled. In order to ensure the power quality of EVs provided for the grid and the load while EVs are with local loads, a H∞ repetitive controller is designed to control the voltage between EVs and the grid to follow the reference voltage. Simulation results have shown that the proposed controller is not only able to realise bi-directional real power and reactive power control, but also keep the output voltage of EVs in V2G or V2H scenario stable and clear while they are with different kinds of local loads. © 2019 Institution of engineering and *** right reserved.

关键词： Fuel economy

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Resource Mobility Aware Hybrid Task Planning in Space Information Networks

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Journal of communications and Information Networks 2019年第4期4卷 107-116页

作者： Runzi Liu Yiting Zhu Yan Zhang Weihua Wu Di Zhou Kai Chi School of Information and Control Engineering Xi’an University of Architecture and TechnologyXi’anShaanxi 710055China The State Key Lab of ISN Xidian UniversityXi’anShaanxi 710071China Science and Technology on Communication Networks Laboratory CETC the 54th research instituteShijiazhuangHebei 050081China Electric Information Network Laboratory CETC the 20th research instituteXi’anShaanxi 710068China

In this paper,a resource mobility aware two-stage hybrid task planning algorithm is proposed to reduce the resource conflict between emergency tasks and the common tasks,so as to improve the overall performance of space information ***,in the common task planning stage,a resource fragment avoidance task planning algorithm is proposed,which reduces the contention between emergency tasks and the planned common tasks in the next stage by avoiding the generation of resource *** emergency tasks,we design a metric to quantify the revenue of the candidate resource combination of emergency tasks,which considers both the priority of the tasks and the impact on the planned common *** on this,a resource mobility aware emergency task planning algorithm is proposed,which strikes a good balance between improving the sum priority and avoiding disturbing the planned common ***,simulation results show that the proposed algorithm is superior to the existing algorithms in both the sum task priority and the task completion rate.

关键词： space information network task planning resource mobility

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Modulation Recognition of Composite Signal Based on ResNet and Frequency Domain Graph

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Journal of Physics: Conference Series 2021年第1期2025卷

作者： Lijun Wang Yu Han Hongfang Ge Yongkuan Zhao Lei Shen Science and Technology on Communication Information Security Control Laboratory Jiaxing China The 36th Research Institute of China Electronics Technology Group Corporation Jiaxing China School of Communication Engineering Hangzhou Dianzi University Hangzhou China

Aiming at the problem of composite signal recognition in measurement and control system, a modulation recognition method of composite signal is proposed based on clipped internal modulation signal frequency image and residual network. Residual network has the advantages of fast convergence and high recognition accuracy, which is used to realize the recognition of different modulation modes and different bandwidth signals. The experimental results show that, compared with the traditional decision tree algorithm and the constellation based CNN recognition algorithm, the recognition performance of the proposed method is improved by more than 3dB for the variable bandwidth composite modulation signal set (BPSK-FM and QPSK-FM with internal modulation bandwidth of 128kHz, BPSK-FM and QPSK-FM with internal modulation bandwidth of 2kHz and 2FSK-FM with internal modulation bandwidth of 32kHz and 2kHz).

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Frog and Blade Based Branching Direction Detection in LiDAR Data

Frog and Blade Based Branching Direction Detection in LiDAR ...

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International Conference on Intelligent Transportation

作者： Ziming Guo Baigen Cai Wei Jiang Martin Lauer School of Electronic and Information Engineering Beijing Jiaotong University Beijing China Institute of Measurement and Control Systems Karlsruhe Institute of Technology Karlsruhe Germany

ISBN: (纸本)9781538670255

Train-borne localization plays an important role in future railway applications which require quick track-selective positioning. In this paper, a branching direction detection approach based on frog and blade is presented to address the ambiguity of which track is chosen when a turnout is passed. The reference positions (i.e. the tip of the blade and the tip of the frog) on turnouts are detected as well. Since track detection is the prerequisite, rail and track sections are extracted using an onboard LiDAR sensor considering features related to the rail profile and the longitudinal geometry. The relative position between the ego track and branching tracks are considered as track events, from which the branching directions are derived. The approach is evaluated with datasets collected in a railway test ground. The results demonstrate that the branching directions are detected accurately with a recall of 97.6% and a precision of 98.8%. Moreover, the proposed approach makes determination of the branching direction 22.4m and 16.4m earlier than the frog- or blade- based one does in facing and trailing directions respectively.

关键词： Rails Laser radar Blades Rail transportation measurement by laser beam Feature extraction Image edge detection

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Realtime 3D Object Detection for Automated Driving Using Stereo Vision and Semantic Information

Realtime 3D Object Detection for Automated Driving Using Ste...

引用

International Conference on Intelligent Transportation

作者： Hendrik Königshof Niels Ole Salscheider Christoph Stiller FZI Research Center for Information Technology Intelligent Systems and Production Engineering Karlsruhe Germany Institute of Measurement and Control Systems Karlsruhe Institute of Technology (KIT) Karlsruhe Germany

ISBN: (纸本)9781538670255

We propose a 3D object detection and pose estimation method for automated driving using stereo images. In contrast to existing stereo-based approaches, we focus not only on cars, but on all types of road users and can ensure real-time capability through GPU implementation of the entire processing chain. These are essential conditions to exploit an algorithm for highly automated driving. Semantic information is provided by a deep convolutional neural network and used together with disparity and geometric constraints to recover accurate 3D bounding boxes. Experiments on the challenging KITTI 3D object detection benchmark show results that are within the range of the best image-based algorithms, while the runtime is only about a fifth. This makes our algorithm the first real-time image-based approach on KITTI.

关键词： Three-dimensional displays Object detection Semantics Laser radar Proposals Two dimensional displays Estimation

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Outage behaviors of NOMA-based satellite network over shadowed-rician fading channels

arXiv

引用

arXiv 2020年

作者： Yue, Xinwei Liu, Yuanwei Yao, Yuanyuan Li, Tian Li, Xuehua Liu, Rongke Nallanathan, Arumugam Key Laboratory of Modern Measurement & Control Technology Ministry of Education School of Information and Communication Engineering Beijing Information Science and Technology University Beijing100101 China School of Electronic Engineering and Computer Science Queen Mary University of London LondonE1 4NS United Kingdom 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang Hebei050081 China Beijing University of Posts and Telecommunications Beijing100876 China School of Electronic and Information Engineering Beihang University Beijing100191 China

This paper investigates the application of non-orthogonal multiple access (NOMA) to satellite communication network over Shadowed-Rician fading channels. The impact of imperfect successive interference cancellation (ipSIC) on NOMA-based satellite network is taken into consideration from the perspective of practical scenarios. We first derive new exact expressions of outage probability for the p-th terrestrial user and provide the corresponding asymptotic analysis results. The diversity order of zero and p are achieved by the p-th terrestrial user with ipSIC and perfect successive interference cancellation (pSIC), respectively. Finally, the presented simulation results show that: 1) On the condition of pSIC, the outage behaviors of NOMA-based satellite network are superior to that of orthogonal multiple access;2) With the value of residual interference increasing, the outage performance of terrestrial users with ipSIC is becoming worse seriously;and 3) Infrequent light shadowing of Shadowed-Rician fading brings the better outage probability compared to frequent heavy and average shadowing. Copyright © 2020, The Authors. All rights reserved.

关键词： Asymptotic analysis

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