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2023 International Conference on Electronic Information Engineering and Data Processing, EIEDP 2023

作者： Jing, Boda Jin, Congjun Song, Youbin Beijing Simulation Center Science and Technology on Special System Simulation Laboratory Beijing100854 China

ISBN: (纸本)9781510666160

The number of channels for radio frequency simulation system is very limited, and the traditional simulation method of one channel simulating one target is difficult to meet the demand of complex scene simulation. This paper proposes a simulation method based on the triadic vector control algorithm of "both amplitude and phase control" to simulate the angular position of multiple radar targets by one channel, and further researches the simulation method based on digital radio frequency memory technology to simulate the multidimensional characteristics of multiple radar targets such as delay, doppler frequency, amplitude and angle by one channel. Mathematical simulation experiments are designed to verify the feasibility of the method. © 2023 SPIE.

关键词： Radio waves

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Study on photoelectric anti-interference technology of Optical Detecting system used in Surface-to-air Missiles 6

Study on photoelectric anti-interference technology of Optic...

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6th Conference on Frontiers in Optical Imaging and technology: Imaging Detection and Target Recognition

作者： Li-Qin, Zhang Lei, Chen Wei, Shen Jin-Dong, Fei Beijing Institute of Electronic System Engineering Peking100854 China Science and Technology on Special System Simulation Laboratory Peking100854 China

ISBN: (数字)9781510679733

ISBN: (纸本)9781510679726

As the battlefield environment becomes more complex, optical guided weapons will face increasingly complex photoelectric interference environment. This paper analyzes the photoelectric interference and interference mode faced by the optical detection system used in surface-to-air missiles, also gives anti-interference methods and simulation results, aiming at providing reference for anti-interference design of surface-to-air missiles. © 2024 SPIE. All rights reserved.

关键词： Surface to air missiles

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Towards optimized tensor code generation for deep learning on sunway many-core processor

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Frontiers of Computer science 2024年第2期18卷 1-15页

作者： Mingzhen LI Changxi LIU Jianjin LIAO Xuegui ZHENG Hailong YANG Rujun SUN Jun XU Lin GAN Guangwen YANG Zhongzhi LUAN Depei QIAN State Key Laboratory of Software Development Environment Beijing 100191China School of Computer Science and Engineering Beihang UniversityBeijing 100191China National University of Singapore Singapore 119077Singapore State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi 214000China Science and Technology on Special System Simulation Laboratory Beijing Simulation Center Beijing 100854China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China

The flourish of deep learning frameworks and hardware platforms has been demanding an efficient compiler that can shield the diversity in both software and hardware in order to provide application *** the existing deep learning compilers,TVM is well known for its efficiency in code generation and optimization across diverse hardware *** the meanwhile,the Sunway many-core processor renders itself as a competitive candidate for its attractive computational power in both scientific computing and deep learning *** paper combines the trends in these two ***,we propose swTVM that extends the original TVM to support ahead-of-time compilation for architecture requiring cross-compilation such as *** addition,we leverage the architecture features during the compilation such as core group for massive parallelism,DMA for high bandwidth memory transfer and local device memory for data locality,in order to generate efficient codes for deep learning workloads on *** experiment results show that the codes generated by swTVM achieve 1.79x improvement of inference latency on average compared to the state-of-the-art deep learning framework on Sunway,across eight representative *** work is the first attempt from the compiler perspective to bridge the gap of deep learning and Sunway processor particularly with productivity and efficiency in *** believe this work will encourage more people to embrace the power of deep learning and Sunwaymany-coreprocessor.

关键词： sunway processor deep learning compiler code generation performance optimization

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Full Polarization Radar Target Recognition Based on Ensemble Learning Algorithm 1

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19th Chinese Intelligent systems Conference, CISC 2023

作者： Yang, Zongkai Zhao, Jingcheng Li, Yanhan Xuan, Shiyang Zhang, Ke Song, Youbin Beihang University Beijing100083 China Science and Technology on Special System Simulation Laboratory Beijing Simulation Center Beijing100854 China

ISBN: (数字)9789819968862

ISBN: (纸本)9789819968855

The polarization characteristic of radar targets is a significant research object in the fields of radar information processing and electronic countermeasures. The study aims to identify the targets by polarization information and machine learning. Points on the Poincaré sphere represent the polarization states. With the change of incident angle and frequency, polarization properties are mapped onto the curve of the Poincaré sphere. Combination of the individual classifiers in machine learning generated the final learning model with a determined strategy. The ensemble learning classifier recognized targets by analyzing the difference of polarization curve. The results indicate that the success rate of recognizing five aircraft targets up to 95.8 %. Full polarization information and ensemble learning algorithm is effective for classification of targets. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Polarization

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A W-band All-Dielectric Lens Antenna with Flat-Top Radiation Pattern 15

A W-band All-Dielectric Lens Antenna with Flat-Top Radiation...

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15th International Conference on Microwave and Millimeter Wave technology, ICMMT 2023

作者： Lu, Yong-Han Ma, Jing Li, Zhi-Hao Huang, Jia-Jia Mo, Kun-Shan Peng, Lin Guilin541004 China Education Department of Guangxi Zhuang Autonomous Region Guilin541004 China Beijing Simulation Center Science and Technology on Special System Simulation Laboratory Beijing100854 China

ISBN: (纸本)9798350338874

This paper proposes a W-band all-dielectric lens antenna with the characteristic flat-top beam. The lens loaded on the horn is composed of 10 concentric elliptical rings and a tapered matching layer. Its geometries are optimized by the non-dominated sorting genetic algorithm II (NSGA-II). The lens antenna designed at 92-97 GHz achieves a beamwidth of 40° with ripple level less than 1 dB in E-plane and H-plane. In addition, the proposed antenna can be prototyped easily using 3D-printing technology with low cost. © 2023 IEEE.

关键词： Genetic algorithms

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Miniaturization Design of TEM Horn Antenna for Ground-Penetrating Radar 15

Miniaturization Design of TEM Horn Antenna for Ground-Penetr...

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15th International Conference on Microwave and Millimeter Wave technology, ICMMT 2023

作者： Li, Zhi-Hao Ma, Jing Wu, Jin Huang, Jia-Jia Lu, Yong-Han Peng, Lin Guangxi Guilin541004 China Education Department of Guangxi Zhuang Autonomous Region Guangxi Guilin541004 China Beijing Simulation Center Science and Technology on Special System Simulation Laboratory Beijing100854 China

ISBN: (纸本)9798350338874

This paper presents a miniaturized TEM horn antenna for ground penetrating radar (GPR). First, an exponential gradient horn antenna is designed with a low cut-off frequency of 0.45 GHz. Then, the low cut-off frequency is decreased to 0.19 GHz through curve structural loading and lens loading without increasing the size of the horn. The antenna size is 378.49 mm × 359.07 mm × 386.06 mm, corresponding to 0.226 λ1 × 0.238 λ1 × 0.243 λ1 ( λ1 is the wavelength corresponding to the lowest frequency of the antenna). The results show that the working bandwidth of the antenna is 0.19-3GHz, and it has a good radiation pattern in the band, with a peak gain of 12.4dBi, which would be a good candidate for GPR. © 2023 IEEE.

关键词： Horn antennas

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One-Dimensional Photonic Crystal Filter with Multiple Defect Layers Based on Particle Swarm Optimization 21st

One-Dimensional Photonic Crystal Filter with Multiple Defect...

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21st Asia simulation Conference, AsiaSim 2022

作者： Hao, Kaizi Du, Jian Ma, Jing Zhang, Ying Ma, Yiyuan Wan, Chen Science and Technology on Special System Simulation Laboratory Beijing Simulation Center Beijing100854 China North University of China Taiyuan030051 China

ISBN: (纸本)9789811991974

In this paper, the defect mode of one-dimensional photonic crystal was studied. For photonic crystal with one defect layer, the effects of refractive index and thickness of defect layer, photon period number and incident angle on defect mode were discussed. Photonic crystal structure with multiple defect layers was constructed, and multiple defect modes were obtained in the forbidden band. Based on the photonic crystal structure with two defect layers, a dual-channel narrow-band filter operating at 480 nm and 532 nm was designed. Particle swarm optimization algorithm was introduced to optimize the position and transmittance of defect modes, which mainly depended on the thickness of defect layer. The calculation results showed that the transmittance of the two defect modes reached 97.52% and 97.55%, respectively, while the full width at half maximum was only 1.0 nm and 1.8 nm. The simulation of the electric field distribution further proved the correctness of the design results. The research results had important value in the field of underwater laser communication. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Photonic crystals

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Dual-Polarized Wideband Wide-Beam Millimeter-Wave Magneto-Electric Dipole Antenna

Dual-Polarized Wideband Wide-Beam Millimeter-Wave Magneto-El...

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

作者： Gou, Linglong Ma, Jing Shi, Bin Zhu, Zhongbo Peng, Lin Guilin University of Electronic Technology Key Laboratory of Microwave and Optical Wave Application Technology Guangxi Guilin541004 China Beijing Simulation Center The Science and Technology on Special System Simulation Laboratory Beijing100854 China The National Key Laboratory of Science and Technology on Space Microwave Xi'an710100 China

ISBN: (纸本)9798350358971

In this manuscript, a dual-polarized wideband wide beamwidth magneto-electric (ME) dipole antenna for millimeter-wave mobile communication is proposed. As can be seen from the simulation results, this design exhibits excellent performance. Owing to the mutual resonances of the magnetic dipole and the electric dipole, large bandwidths of 64.8% and 59% (18.4 GHz-33 GHz and 17.29 GHz-33.9 GHz) are obtained for the two polarizations, respectively. The isolation between the two ports is greater than 25 dB. By loading metal vias, the antenna's beamwidth is widened to more than 100° through the whole operating band. The antenna size is 5mm×5 mm ×1.72 mm, and this compact structure is quite suitable for using in beam scanning antennas. © 2023 IEEE.

关键词： dual-polarization millimeter-wave (mm-wave) wideband

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A Runtime Verification Tool for Distributed simulation systems 5th

A Runtime Verification Tool for Distributed Simulation Syst...

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5th China Conference on Intelligent Networked Things, CINT 2022

作者： Zhang, Lianyi Qing, Duzheng Zhang, Han Wang, Qingyun Laili, Yuanjun Science and Technology on Special System Simulation Laboratory Beijing Simulation Center Beijing China Beijing Institute of Electronic System Engineering Beijing China Beihang University Beijing China

ISBN: (纸本)9789811989148

Distributed simulation systems are complex systems that may suffer from runtime uncertainty or runtime errors. The core of defect detection in distributed simulation systems is to effectively traverse the state space of communication between nodes in the system. In a distributed simulation system, simulation nodes communicate and exchange data through event requests. Different event interaction sequences constitute different states of system behavior. Therefore, an efficient traversal of the state space can be transformed into sequential control of event requests in the system. This paper mainly studies the hybrid method based on software testing and model checking to perform runtime verification of the temporal properties of distributed simulation systems. We develop the runtime verification tool TempoRV. It monitors the distributed simulation system and responds immediately when the behavior of the system violated certain temporal properties. Finally, to illustrate the effectiveness of the proposed tool, we conduct a case study to show that TempoRV provides an important guarantee for the temporal correctness of distributed simulation systems. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Software testing

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Factor Graph Localization Algorithm Based on Robust Estimation 5

Factor Graph Localization Algorithm Based on Robust Estimati...

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5th IEEE International Conference on Electronic Information and Communication technology, ICEICT 2022

作者： Ma, Jing Mao, Ying Chen, Hangyu Tian, Yuan Science and Technology on Special System Simulation Laboratory Beijing China College of Information and Communication Engineering Harbin Engineering University Harbin China

ISBN: (数字)9781665472111

ISBN: (纸本)9781665472111

In recent years, with the continuous development of unmanned ground vehicles (UGVs), the performance requirements of unmanned vehicle positioning system are also gradually improved. Existing unmanned ground vehicles need to use a variety of sensors to provide measurement information, and the available positioning information is dynamically combined in the positioning system and the positioning results are calculated. In this paper, multi-source information fusion positioning system of unmanned ground vehicles is established based on factor graph model. In order to solve the problem that the factor graph algorithm is difficult to identify and exclude abnormal observations autonomously, this paper combines the robust estimation with the factor graph to improve the factor graph method. The reliability factor is added in the construction of the factor node, which can be adjusted adaptively according to the current measured value to reduce the weight of abnormal observations and ensure the normal operation of the system. simulation results show that the improved factor graph algorithm proposed in this paper can effectively reduce the influence of abnormal observations on positioning accuracy. © 2022 IEEE.

关键词： Information fusion

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