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检索条件"机构=Science and Technology on Complex Electronic System Simulation Laboratory"

共 535 条记录，以下是181-190 订阅

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A maneuvering penetration strategy via integrated flight/propulsion guidance and control method for air-breathing hypersonic vehicle

A maneuvering penetration strategy via integrated flight/pro...

引用

2018 IEEE CSAA Guidance, Navigation and Control Conference, CGNCC 2018

作者： Xue, Kong Guodong, Ning Ming, Yang Songyan, Wang Harbin Institute of Technology Control and Simulation Center and Science and Technology Complex System Control and Intelligent Agent Cooperation Laboratory China Beijing Electro-Mechanical Institute China Harbin Institute of Technology Control and Simulation Center China

ISBN: (纸本)9781538611715

Given a maneuvering control strategy for air-breathing hypersonic vehicle, which adopt the compound integrated flight/propulsion guidance and control method, further excavation the capability of scramjet to run stable and low fuel consumption, on this basis, implement accelerate snake maneuver, improve the survival probability of weapons, guarantee the practical application ability of the project. Take one certain type of air-breathing hypersonic vehicle as an example, on the basis of an accurate simulation model, several groups of simulation analysis are carried out, the simulation results show that the method is effective and reliable. © 2018 IEEE.

关键词： Hypersonic vehicles

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Collaborative Filtering Recommendation Algorithm of Weaponry Based on Knowledge Graph

Collaborative Filtering Recommendation Algorithm of Weaponry...

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Information technology,Big Data and Artificial Intelligence (ICIBA), International Conference on IEEE International Conference on

作者： Xiao Li Desheng Liu Qing Chang Science and Technology on Complex Electronic System Simulation Laboratory Space Engineering University Beijing

ISBN: (纸本)9781665428781

Nowadays, modern warfare has changed from weapon-centric operations to network-centric system operations, which has led to the phenomenon of sea-level quantification of weaponry. It is an important research topic for combat commanders to select suitable weaponry from a large number of available resources when facing combat tasks. Recommendation technology is a solution to this problem, which can effectively solve the problem of information overload, so that combat commanders do not produce the phenomenon of “information loss”, in the shortest possible time to make the right decision. Therefore, this paper proposes a collaborative filtering recommendation algorithm for weaponry based on the knowledge graph and the idea of collaborative filtering. In this algorithm, the knowledge graph provides a clear data model with various association relationships, and the collaborative filtering algorithm can realize it without relying on professional experience, which can realize the recommendation process more actively, faster and more intelligently.

关键词： Weapons Collaborative filtering systems operation Conferences Filtering algorithms Big Data Information filters

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The Synthetic Aperture Radar-based Image Augmentation Using Generative Adversarial Network 23

The Synthetic Aperture Radar-based Image Augmentation Using ...

引用

Proceedings of the 2023 8th International Conference on systems, Control and Communications

作者： Kai Zhao Wei Xiong Xiaolan Yu Space Engineering University Science and Technology on Complex Electronic System Simulation Laboratory China

ISBN: (纸本)9798400707810

Synthetic aperture radars (SARs), characterized by their excellent performance, have found wide use in military applications. SAR-based image recognition is an important research area. Neural networks (NNs) have been widely used for image recognition and have demonstrated high recognition accuracy. However, NNs require a significant amount of data for training. In situations with limited training data, it is difficult to obtain satisfactory recognition accuracy using NNs. One approach toward alleviating the problems associated with small training sets is data augmentation. Here, we propose a novel SAR-based image augmentation method: using CycleGAN, aerial images are transformed into SARformat images, thereby allowing expansion of the SAR dataset. To improve the quality of these transformed images, we designed two filters: 1) a pre-filter for selecting images that are suitable for the transformation and 2) a post-filter for selecting suitable images after the transformation; this allows approximating the transformed images as real SAR images. We validated our method on the SSDD dataset. Our experimental results show that compared with the traditional data augmentation method, our method exhibits better recognition performance. With only 300 transformed images, the mean average precision improved from 66% to 76%, using only a small fraction of the SSDD dataset, thus overcoming the problem of small-sized training sets.

关键词： Cycle GAN Image augmentation Synthetic aperture radars

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Research on the information system architecture design framework and reference resources of American Army 21

Research on the information System architecture design frame...

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Proceedings of the 3rd International Conference on Advanced Information science and system

作者： Ping Jian Space Engineering University Science and Technology on Complex Electronic System Simulation Laboratory China

ISBN: (纸本)9781450385862

The concept of architecture is put forward by the US Army, which refers to the composition structure of the system and its mutual relationship, as well as the principles and guidelines guiding the design and development of the system. Architecture design technology and its reference resources have important theoretical and technical support for the top-level design of information system. Based on the analysis of architecture technology and function, this paper systematically studies the connotation and development history of the architecture design framework of the US army, and sorts out the main reference resources of the architecture design of the US army, such as the common joint task list, information system interoperability level model, joint technology architecture. It provides useful reference for the theoretical and technical research of information system top-level design.

关键词： Architecture design

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A guided fuzzing approach for security testing of network protocol software

A guided fuzzing approach for security testing of network pr...

引用

IEEE International Conference on Software Engineering and Service sciences (ICSESS)

作者： Jun Cai Peng Zou Dapeng Xiong Jun He Science and Technology on Complex Electronic System Simulation Laboratory The Academy of Equipment Beijing China

ISBN: (纸本)9781479983544

Software vulnerabilities are one of the root causes of network security issues. Software security testing is an essential part of secure software development. Fuzzing has been proven to be an effective dynamic software security testing method. In this paper we present a guided fuzzing approach based on dynamic taint analysis for security testing of network protocol software. This approach identifies the security sensitive functions of target application affected by network packets via dynamic taint analysis, and generates testcases by mutating these packets with the elements of a fuzz library. Due to the guidance of taint information, it to some extend overcomes the blindness of traditional fuzzing methods and improves efficiency. The approach integrates several successive steps, we currently focus on the taint analysis step and have received interesting preliminary experimental results.

关键词： Security Protocols Software Monitoring Libraries Testing Sockets

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Preference-based Evolutionary Many-objective Optimization for Regional Coverage Satellite Constellation Design

Preference-based Evolutionary Many-objective Optimization fo...

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作者： Minghui Xiong Wei Xiong Science and Technology on Complex Electronic System Simulation Laboratory Space Engineering University Beijing

For the satellite constellation design problem, the computational complexity of regional coverage performance evaluation has posed great difficulty to classical Pareto dominance-based algorithms discovering the entire Pareto front of the problem, while the decision makers are often interested in a limited part of it. In this paper, a preference-based manyobjective evolutionary algorithm, HMOEA-T, is utilized to solve this problem. The optimization includes two steps. The first step describes the preference information of decision maker by target region, while the second step focuses the search process on the preferred region and maintaining well convergence and diversity within the region. A visualization method is applied to intuitively analysis the performance of different methods handling the problem. Experimental results have shown the advantage of integrating preference information into the optimization process, and the comparative study with other state-of-the-art preferencebased methods(T-MOEA/D and T-NSGA-III) indicate that the proposed method can achieve competitive and better performance.

关键词： evolutoinary algorithm preference articulation constellation design many-objective optimization

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Multistage Synchronous Secure Communication Method 1

Multistage Synchronous Secure Communication Method

引用

1st International Conference on Advanced Algorithms and Control Engineering, ICAACE 2018

作者： Sun, Wei He, Jun Quan, Lei Science and Technology on Complex Electronic System Simulation Labratory University of Aerospace Engineering Beijing101416 China Naval Academy of Armament China Based on Time-delayed Hyperchaotic System Beijing100161 China

To solve the security of data transmission in network, a secure communication method based on time-delayed hyperchaotic synchronization is presented. By selecting the typical hyperchaotic system, the communication system synchronization scheme is designed to realize the recovery of the encrypted signal, and the security performance of the method is analyzed by simulation. The simulation results show that the synchronization method has the characteristics of high security and is easy to implement. © Published under licence by IOP Publishing Ltd.

关键词： Secure communication

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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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Research on the Scattering Characteristics of Motion Modulated Ultra-long Chaff 4

Research on the Scattering Characteristics of Motion Modulat...

引用

4th International Applied Computational Electromagnetics Society Symposium in China, ACES-China 2021

作者： Lin, Gan Jianbing, Li Xin, Liu Xuesong, Wang College of Electronic Science and Technology National University of Defense Technology State Key Laboratory of Complex Electromagnetic Effects on Electronics and Information System Changsha China

ISBN: (纸本)9781733509619

In order to develop a new kind low-dimensional and efficient chaff interference mode, a discontinuous super-long chaff made of S-type glass fiber is proposed. In this paper, its kinematics and scattering characteristics in the thin atmosphere are emphatically studied. simulation results show that long chaffs have stronger shape-maintaining ability and better interference effect than the traditional dipole chaffs under different polarization conditions. © 2021 Applied Computational Electromagnetics Society (ACES).

关键词： Finite element method

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Modelling and Analyses of the Range Gate Pull-off (RGPO) Effect on Radar Tracking

Modelling and Analyses of the Range Gate Pull-off (RGPO) Eff...

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2024 Photonics and Electromagnetics Research Symposium, PIERS 2024

作者： Wang, Yanfeng Wu, Qihua Zhao, Tiehua Liu, Xiaobin Zhao, Feng Xiao, Shunping National University of Defense Technology State Key Laboratory of Complex Electromagnetic Environmental Effects on Electronics and Information System College of Electronic Science and Technology China

ISBN: (纸本)9798350375909

Range gate pull-off (RGPO) Jamming disrupts tracking capability of radar system by strategically increasing the latency of radar signal. Hence this kind of active deception jamming is widely adopted. The quantitative assessment and evaluation of RGPO Jamming effects on radar systems is of great significance for enhancing radar anti-jamming capabilities. However, difficulties exist in establishing a mathematical model for analyzing the jamming effects through theoretical analyses. Both the complexity of different radar systems and randomness of radar tracking processes add to this challenge. These factors result in substantial workload to analyze jamming effects. Considering these challenges, a modelling method for RGPO effects on radar based on digital simulation results is introduced in this study. Firstly, the radar range tracking model was established. Through the qualitative analyses of the process of RGPO jamming effect and the principle of affecting the tracking loop, it was found that the rate of a successful pulling off would show a precipitous drop after the pulling speed exceeds a certain threshold. This conclusion was verified in the simulation results of the RGPO effect simulation system. On this basis, to build the relationship between the maximum pull-off speed and the Jamming-to-Signal Ratio (JSR), a modelling method based on spline interpolation and least squares fitting was proposed in this study. The work contributes to a deeper understanding of the impact of RGPO Jamming on radar tracking, and provides valuable insights for bolstering radar countermeasures. © 2024 IEEE.

关键词： Radar countermeasures

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