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2012 7th International Conference on System of systems Engineering, SoSE 2012

作者： Zhang, Jing Zhang, Yingchao Yu, Qin Zhang Guan, Chuan Fang Li, Wei Peng, Yong Science and Technology on Complex Systems Simulation Laboratory Beijing Institute of System Engineering Beijing China National University of Defense Technology Changsha China

ISBN: (纸本)9781467329750

While the difficulty and complexity of simulation system increasing, the development efficiency and execution performance of the large-scale distributed simulation system (LSDSS) must be improved effectively. Furthermore, while the multi-core has become popular hardware, yet the traditional federate mechanism couldn't utilize and schedule the CPU resource, which would limit the simulation performance. Then PFHF, Parallel Framework for HLA Federate, was designed and realized to solve the problem above. PFHF could combine and construct federate from simulation model components, perform simulation engine management, data distribution management, object management, component management and load balancing function, etc., then support the integrated execution environment based on multi-core and parallel technique. Several experiments proved that PFHF could utilize multi-core CPU adequately, and reduce the LSDSS execution time efficiently. © 2012 IEEE.

关键词： Circuit simulation

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A method of segmenting texture of targets in remote sensing images based on granular computing

A method of segmenting texture of targets in remote sensing ...

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2011 International Conference on Information technology, Computer Engineering and Management sciences, ICM 2011

作者： Liang, Yi Mao, Zhaojun Company of Postgraduate Academy of Equipment Command and Technology Beijing 101416 China Science and Technology on Complex Systems Simulation Laboratory Beijing 100101 China

ISBN: (纸本)9780769545226

In order to solve the aircraft targets segmentation and recognition problem with background interference in remote sensing images, a base-on granular computing method to division texture is used in this paper. By granulating remote sensing images, the gray level co-occurrence matrix and Gabor filter can catch these characters in elementary granules. And these elementary granules are incorporated to a result of texture division in quotient space. For illustration, a remote sensing image with two aircraft targets is utilized to show these steps of segmentation. Empirical results show that the decision rule with highest confidence measure will be used as the final decision rules in the MADA problem with multiple conflicting decision attributes. The base-on granular computing texture characters segmentation method can effectively solve the aircraft targets segmentation and recognition problem with background interference in remote sensing images are solved. © 2011 IEEE.

关键词： Remote sensing

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A credibility allocation approach of complex simulation systems 35

A credibility allocation approach of complex simulation syst...

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35th European Modeling and simulation Symposium, EMSS 2023

作者： Zhang, Huan Li, Wei Geng, HuaPin Ma, Ping Yang, Ming Control and Simulation Center Harbin Institute of Technology Harbin150080 China National Key Laboratory of Modeling and Simulation for Complex Systems Harbin150080 China Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing100074 China

ISBN: (纸本)9788885741881

complex simulation systems usually need to satisfy the credibility requirements and the credibility of complex simulation systems is inextricably linked to the credibility of simulation sub-systems. Hence, in order to guarantee the credibility of complex simulation systems meets requirements, it is necessary to allocate the credibility of simulation sub-systems. complex simulation systems are composed of several correlative simulation sub-systems and their credibility has correlation relationships, which makes it difficult to obtain the credibility of simulation sub-systems quickly. The existing works mostly ignore the relationships between the sub-systems and are difficult to generate the credibility allocation results of simulation sub-systems. In this paper, we model the credibility allocation problem as a probabilistic inference problem based on the pairwise Markov random field (PMRF). In addition, we apply several inference algorithms to perform the inference exactly and approximately in the credibility PMRF. Finally, experiments are conduted on the air defense combat complex simulation system, and the experiment results demonstrate that the proposed method can obtain the credibility allocation results quickly and accurately. © 2023 The Authors.

关键词： Inference engines

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An approach to resolve data semantic heterogeneity in simulation grid

An approach to resolve data semantic heterogeneity in simula...

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IASTED International Conference on Modelling and simulation, MS 2012

作者： Zhang, Ying-Chao Chen, Li-Li Yu, Qin-Zhang He, Yan Science and Technology on Complex Systems Simulation Laboratory Beijing Institute of System Engineering Chaoyang district AnXiang BeiLi Tenth Beijing China

ISBN: (纸本)9780889869264

In simulation grid, information sharing is very important for the grid units to cooperate with each other effectively and efficiently. In this paper, to resolve the problem of semantic heterogeneity, an ontology-based approach is proposed. In this approach, firstly, the local ontologies are merged into a global ontology based on their similarities. Then, with the merged global ontology, the semantic heterogeneity is resolved by comparing the classes and attributes of the local information source schemas. An example of how to resolve semantic heterogeneity in the E-government simulation grid is presented to illustrate this approach.

关键词： Ontology

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A rapid reentry trajectory planning method for CAV

A rapid reentry trajectory planning method for CAV

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3rd International Symposium on systems and Control in Aeronautics and Astronautics, ISSCAA2010

作者： Zhao, Zhiqiang Hu, Zhengdong National Key Laboratory of Science and Technology on Complex Systems Simulation-II Beijing 100012 China National University of Defense Technology Changsha 410073 China

ISBN: (纸本)9781424460441

A rapid reentry trajectory planning method for a common aero vehicle (CAV) subject to all path constraints is developed. The reentry trajectory is divided into initial descent phase and quasi-equilibrium glide phase which possesses a majority of the reentry period. An improved quasi-equilibrium glide condition is utilized to convert reentry corridor constraints to the control variable constraints and get a simple relation between the range-to-go and velocity. Accordingly the longitudinal reference trajectory is computed through the one-parameter search of bank angle model and the corresponding tracking law is designed using linear quadratic regulator theory. To enhance the maneuvering capability, a geometrical control approach considering no-fly zone constraints is applied to the lateral guidance. Finally, the performance of this method is verified by computer simulation. ©2010 IEEE.

关键词： Maneuverability

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Effect of temporal disorder on wave packet dynamics in one-dimensional kicked lattices

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Chinese Physics B 2018年第12期27卷 85-91页

作者： Yuting Wang Yi Gao Peiqing Tong Center for Quantum Transport and Thermal Energy Science School of Physics and TechnologyNanjing Normal UniversityNanjing 210023China jiangsu Key Laboratory on Opto-Electronic Technology School of Physics and TechnologyNanjing Normal UniversityNanjing 210023China Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems Nanjing Normal UniversityNanjing 210023China

Inspired by the recent experimental progress in noisy kicked rotor systems,we investigate the effect of temporal disorder or quasi-periodicity in one-dimensional kicked lattices with pulsed on-site *** found that,unlike the spatial disorder or quasi-periodicity which usually leads to localization,the effect of the temporal one is more complex and depends on the spatial *** the kicked on-site potential is periodic in real space,then the wave packet will stay diffusive in the presence of temporal disorder or *** the other hand,if the kicked on-site potential is spatially quasi-periodic,then the temporal disorder or quasi-periodicity may lead to a shift of the transition point of the dynamical localization and destroy the dynamical localization in a certain parameter *** results we obtained can be readily tested by experiments and may help us better understand the dynamical localization.

关键词： temporal disorder quasi-periodicity dynamical localization

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Role-based approaches for operational tasks modeling and flexible decomposition

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Journal of systems Engineering and Electronics 2016年第6期27卷 1191-1206页

作者： ZhigangZou Wangfang Che Shusheng Wang Yun Bai Chengli Fan Science and Technology on Complex Aviation Systems Simulation Laboratory Beijing 100076China Air and Missile Defense College Air Force Engineering UniversityXi’an 710051China Department of Information Operation&Command Training National Defense University of PLABeijing 100091China

In order to realize the fact that operational tasks can be decomposed flexibly with new tasks random adding, role-based approaches for operational tasks model and the flexibility decomposition are proposed. Firstly, aiming at the shortcomings of previous task decomposition methods, operational role concepts are introduced to design a computing framework of task flexibility decomposition. Within the framework, task structure matrixes are constructed for tasks decomposition with the mapping relations of information interaction and action process among tasks. On basis of this, via giving operational decomposition granularity, a flexibility approach of operational task decomposition is put forward with three parts about task decomposition granularity adjustment, tasks module partition with different operational role patterns and task decomposition scheme evaluation. Finally, as an application case shown, it is validated that the proposed approaches for tasks modeling and decomposition are available. By comparing with previous decomposition approaches, the proposed approach, within three types of operational roles, has strong environmental adaptability and scheme diversity, which can restrain calculation complexity increment for realizing task flexible decomposition effectively. © 2016 Beijing Institute of Aerospace Information.

关键词： Electronics industry Engineering Industrial engineering

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The simulation of cluster bombs' damage efficiency and analysis of damage factor

The simulation of cluster bombs' damage efficiency and analy...

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2014 International Conference on Future Communication technology and Engineering (FCTE 2014)

作者： S.Liu X.J.Zhao F.Zhao X.Wei W.F.Li Science and Technology on Complex Land Systems Simulation Laboratory Chinese Defense Science and Technology Information Centre

First, the paper emulated cluster bombs' random point of fall, the radius of damage of the bombs,drew the bombs' damage range, and counted the damage effect. The final damage efficiency of cluster bombs was calculated and the influence from each damage factor of the cluster bombs was studied through many random experiences. The method solved the tough problem of the precise calculation of damage efficiency, which was caused by the overlapped damage size.

关键词： The simulation of cluster bombs damage efficiency and analysis of damage factor simulation

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Role-based approaches for operational task-resource flexible matching model and algorithm

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Journal of systems Engineering and Electronics 2017年第1期28卷 67-80页

作者： Zhigang Zou Wangfang Che Fuling Mu Yiqian Chao Bo Zhang Science and Technology on Complex Aviation Systems Simulation Laboratory Beijing 100076China Air and Missile Defense College Air Force Engineering UniversityXi’an 710051China Department of Information Operation&Command Training National Defense University of PLABeijing 100091China

In order to solve the problem that previous relation researches in operational task-resource matching are hard to flexible computing for generating a new matching scheme from the existing scheme under the condition of operational tasks or resources adjusted in uncertainty cases, role-based approaches to operational task-resource flexible matching model and algorithm are proposed in the paper for flexible matching operational tasks with resources. Firstly, through introducing the concept of roles, the role-based calculation framework of operational task-resource flexible matching is constructed. Secondly, two aspect indexes about resource utilization ratio (RUR) and time utilization ratio (TUR) are given to reflect operational task-resource matching quality (TRMQ), which can be regarded as the objective function for modeling role-based operational task-resource flexible matching mathematical formulation. On the basis of this, the role-based artificial bee colony (RABC) algorithm, including five specific calculating operators, is put forward for solving the flexible matching problem with double encoding on operational tasks and resources by roles. Finally, via comparing with the previous methods in application cases, it can be validated that role-based model and proposed algorithm are more effective, which can be used to obtain a new incremental scheme from the existing matching scheme for adopting the operational tasks or resources adjustment. Moreover, there are flexible computation advantages of the approaches proposed in this paper to solve the problem about operational task-resource matching in large-scale. © 1990-2011 Beijing Institute of Aerospace Information.

关键词： Aspect ratio Functions Optimization

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Network Security Situation Prediction Based on TCAN-BiGRU Optimized by SSA and IQPSO

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Computer systems science & Engineering 2023年第10期47卷 993-1021页

作者： Junfeng Sun Chenghai Li Yafei Song Peng Ni Jian Wang College of Air and Missile Defence Air Force Engineering UniversityXi’an710051China Science and Technology on Complex Aviation Systems Simulation Laboratory Beijing100076China

The accuracy of historical situation values is required for traditional network security situation prediction(NSSP).There are discrepancies in the correlation and weighting of the various network security *** solve these problems,a combined prediction model based on the temporal convolution attention network(TCAN)and bi-directional gate recurrent unit(BiGRU)network is proposed,which is optimized by singular spectrum analysis(SSA)and improved quantum particle swarmoptimization algorithm(IQPSO).This model first decomposes and reconstructs network security situation data into a series of subsequences by SSA to remove the noise from the ***,a prediction model of TCAN-BiGRU is established respectively for each *** uses the TCN to extract features from the network security situation data and the improved channel attention mechanism(CAM)to extract important feature information from *** learns the before-after status of situation data to extract more feature information from sequences for ***,IQPSO is proposed to optimize the hyperparameters of ***,the prediction results of the subsequence are superimposed to obtain the final predicted *** the one hand,IQPSO compares with other optimization algorithms in the experiment,whose performance can find the optimum value of the benchmark function many times,showing that IQPSO performs *** the other hand,the established prediction model compares with the traditional prediction methods through the simulation experiment,whose coefficient of determination is up to 0.999 on both sets,indicating that the combined prediction model established has higher prediction accuracy.

关键词： Network security situation prediction SSA IQPSO TCAN-BiGRU

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