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IASTED International Conference on Modelling and simulation, MS 2012

作者： Yu, Qin-Zhang Zhang, Ying-Chao Hu, Run-Tao Shen, Zhi-Ming Zhang, Jing Beijing Institute of System Engineering Science and Technology on Complex Systems Simulation Laboratory Beijing China

ISBN: (纸本)9780889869264

C4ISR system is the multiplicator of System of Armament systems (SoAS). An analysis method for Contribution Degree of C4ISR system is proposed in the paper. Firstly, Overall-Effect based evaluation method for operational effectiveness of SoAS is introduced. Secondly, Contribution Degree of C4ISR system is defined and experiment flow based on exploratory simulation is designed. On this basis, an analysis method for Contribution Degree of C4ISR system is put forward. Finally, a simulation experiment is executed to prove the effectiveness of the method.

关键词： C4ISR system Contribution Degree Analysis Method Operational Effectiveness Multiplying circuits simulation test evaluation method armament WWOX gene

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Dangerous object recognition for visual surveillance

Dangerous object recognition for visual surveillance

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2012 3rd IEEE/IET International Conference on Audio, Language and Image Processing, ICALIP 2012

作者： Yao, Peng Wang, Yongtian Chen, Can Weng, Dongdong Liu, Yue School of Optoelectronics Beijing Institute of Technology Beijing China Science and Technology on Complex Land Systems Simulation Laboratory Beijing China

ISBN: (纸本)9781467301718

In this paper, we address a critical task, i.e. dangerous object recognition for web surveillance system. Instead of investigating how to define an object is dangerous by analyzing human's activities (e.g. leaving a bomb in public places), our research focus on how to capture the dangerous object immediately when he/she appears under surveillance camera again, to stop him/her do more bad things. Different with the existing template and feature matching based methods, we solve the dangerous object recognition problem by a classification based method. We train a SVM classifier by learning "bag of words" based dangerous and non-dangerous object representation. For obtaining more discriminative object descriptors, we fuse color and texture, two low level image features, to generate descriptors under "bag of words" frame. We evaluate the proposed method, along with template and feature matching methods. The experimental results validate our method. © 2012 IEEE.

关键词： Object recognition

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A high accuracy direction-finding method of 2-D multi-beams

A high accuracy direction-finding method of 2-D multi-beams

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4th International Conference on Mechanical and Electrical technology, ICMET 2012

作者： Wang, Zhigang Wang, Fang Science and Technology on Complex land Systems Simulation Laboratory Beijing 100012 China Beijing Institute of Special Electromechanical Technology Beijing 100012 China

ISBN: (纸本)9783037855102

In order to acquire a kind of high accuracy multi-beams direction-finding method, this paper proposes a sort of 2-D multi-beams direction-finding method based on surface fitting. Three main factors influencing direction-finding accuracy are summarized in this paper, and the specific influence of these three factors to direction finding accuracy are analyzed by simulation experiments. The result of simulation experiments analysis shows that this method has higher steadiness and better direction-finding accuracy. © (2012) Trans Tech Publications, Switzerland.

关键词： Fiber optic sensors

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systems analysis on spacecraft design

Systems analysis on spacecraft design

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2012 3rd International Conference on System science, Engineering Design and Manufacturing Informatization, ICSEM 2012

作者： Huang, Wen-Bo Zhang, Wei-Hua Cai, Ye-Quan Shuai, Shi College of Aerospace and Material Engineering National University of Defense Technology Changsha China Science and Technology on Complex Systems Simulation Laboratory Beijing China

ISBN: (纸本)9781467309141

The unpredictability and uncertainty of the new space mission has induced new challenges to the traditional spacecraft design method, by which the satellite and the launch vehicle are designed individually. According to the system theory and the system approach, a novel integrated design model for spacecraft is put forward in this article. Firstly, the feasibility of the proposed model is analyzed. Then, the qualitative analysis on the integration design scheme for the subsystems (including the sensors, the controller, the attitude & orbit control systems, the structure and power supply & distribution system, etc.) of the traditional satellite and the carrier rocket is carried out. Lastly, the advantages of the integration model are demonstrated through the quantitative research, especially in the uncertain space mission. © 2012 IEEE.

关键词： systems analysis

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Design and realization of the simulation component-based parallel framework for HLA Federate

Design and realization of the simulation component-based par...

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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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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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New Explorations on Cannon's Contributions and Generalized Solutions for Uniform Linear Motion Blur Identification

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Journal of Computer science & technology 2012年第1期27卷 174-186页

作者： Lu Wang Hong-Yan Zhang Si-Long Peng The National Engineering and Technology Research Center for ASIC Design Institute of AutomationChinese Academy of SciencesBeijing 100190China The Key Laboratory of Complex Systems and Intelligence Science Institute of AutomationChinese Academy of Sciences Beijing 100190China Sino-European Institute of Aviation Engineering Civil Aviation University of ChinaTianjin 300300China

Existing frequency-domain-oriented methods of parameter identification for uniform linear motion blur （ULMB） images usually dealt with special scenarios. For example, blur-kernel directions were horizontal or vertical, or degraded images were of foursquare dimension. This excludes those identification methods from being applied to real images, especially to estimate undersized or oversized blur kernels. Pointing against the limitations of blur-kernel identifications, discrete Fourier transform （DFT）-based blur-kernel estimation methods are proposed in this paper. We analyze in depth the Fourier frequency response of generalized ULMB kernels, demonstrate in detail its related phase form and properties thereof, and put forward the concept of quasi-cepstrum. On this basis, methods of estimating ULMB-kernel parameters using amplitude spectrum and quasi-cepstrum are presented, respectively. The quasi-cepstrum-oriented approach increases the identifiable blur-kernel length, up to a maximum of half the diagonal length of the image. Meanwhile, directing toward the image of undersized ULMB, an improved method based on quasi-cepstrum is presented, which ameliorates the identification quality of undersized ULMB kernels. The quasi-cepstrum-oriented approach popularizes and applies the simulation-experiment- focused DFT theory to the estimation of real ULMB images. Compared against the amplitude-spectrum-oriented method, the quasi-cepstrum-oriented approach is more convenient and robust, with lower identification errors and of better noiseimmunity.

关键词： Fourier amplitude spectrum phase perpendicular relation uniform linear motion blur identification quasicepstrum

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Hardware-in-the-loop simulation and flight experimentation of the control system on a small solid rocket

Hardware-in-the-loop simulation and flight experimentation o...

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2012 3rd International Conference on Mechanical and Aerospace Engineering, ICMAE 2012

作者： Wenbo, Huang Yinhui, Zhang Zhenyu, Jiang Weihua, Zhang College of Aerospace and Material Engineering National University of Defense Technology Changsha 410073 China Science and Technology on Complex Systems Simulation Laboratory Beijing 100101 China

ISBN: (纸本)9783037855140

By using the Perturbation Theory and solidification coefficient method, based on the interpolation parameters for optimal control feedback matrix, the design of optimal roll control system for a small solid rocket is achieved. The hardware-in-the-loop simulation platform built with DSPACE real-time simulator and high-precision three axis turntable is designed to validate the optimal control law. As for no feedback device of the steering gear, the radios are used to transfer the signals between the devices in the closed loop simulation system. Finally, through the flight-testing, the results confirm a good stability of the roll control system and the high reliability of the hardware-in-the-loop simulation platform. © (2012) Trans Tech Publications, Switzerland.

关键词： Hardware-in-the-loop simulation

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On design and realization of model registration mechanism based upon cloud computing

On design and realization of model registration mechanism ba...

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20th IASTED International Conference on Applied simulation and Modelling, ASM 2012

作者： Ren, Tingguang Wei, Jicai Jiang, Jiali Tang, Lijian Lv, Shaoqing Beijing Institute of System Engineer Science and Technology on Complex Systems Simulation Laboratory Post Box.9702 19 Beijing 100101 China

ISBN: (纸本)9780889869257

Through analyzing the theoretical basis and approach features of system-of-systems and cloud computing technology, the designing infrastructure and application flow of the meta-synthetic environment for equipment system-of-systems demonstration have been given with a combination of construction and application requirements of equipment system-of-systems centered on information. When designing the meta-synthetic environment for equipment system-of-systems demonstration, we adopted the way of Service Oriented Architecture (SOA), and put forward a model registration mechanism. By establishing the model registration principle, we designed and generated the model registration system, realized the model registration and management of the meta-synthetic environment to solve the quantification and evaluation issue and realized Design on Demand and Service on Demand of evaluation of the equipment system-of-systems demonstration meta-synthetic environment.

关键词： Demonstrations

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System-of-systems planning method based on Markowitz model

System-of-systems planning method based on Markowitz model

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20th IASTED International Conference on Applied simulation and Modelling, ASM 2012

作者： Wei, Jicai Ren, Tingguang Jiang, Jiali Zhao, Wei Cui, Hao Li, Junmei Beijing Institute of System Engineer Science and Technology on Complex Systems Simulation Laboratory Post Box.9702 19 Beijing 100101 China

ISBN: (纸本)9780889869257

In order to resolve the problems resulting from various combinations of equipment selection, numerous uncertainties of future demands and the development process, a planning method based on the Markowitz model is proposed. First a qualitative analysis is performed and models of a combination planning method are produced, then a Markowitz model of the development plan of system-of-systems under uncertainty is built and solved by adopting a searching algorithm based on vector operation. Finally the effectiveness of the method is checked by scouting the development planning examples of the early warning surveillance system.

关键词： System of systems

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