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6th EAI International Conference on IoT as a Service, IoTaaS 2020

作者： Wang, Tongtong Zhang, Zhou Guo, Jing Tianjin China Science and Technology on Complex Aviation System Simulation Laboratory Beijing China

ISBN: (纸本)9783030675134

In this research, the problem of distributed opportunistic channel access is investigated under single-bit channel state information (CSI) feedback in ad hoc networks. In finding an optimal strategy achieving the maximum average system throughput, the optimal stopping approach is used, and an optimal strategy is proposed. In it, each winner source decides when to take transmission opportunity based on singe-bit feedback information. Moreover, an optimal quantization vector is also derived for the strategy. Interestingly, it is pure-threshold based, and the optimal quantization vector is fixed. All thresholds can be calculated off-line, and easy implementation is available. Through simulation, the effectiveness and efficiency of the optimal strategy are also verified. © 2021, ICST Institute for Computer sciences, Social Informatics and Telecommunications Engineering.

关键词： Vector quantization

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Two-Stage Point Cloud Super Resolution with Local Interpolation and Readjustment via Outer-Product Neural Network

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Journal of systems science & complexity 2021年第1期34卷 68-82页

作者： WANG Guangyu XU Gang WU Qing WU Xundong School of Computer Science and Technology Hangzhou Dianzi UniversityHangzhou 310018China Key Laboratory of Complex Systems Modeling and Simulation Ministry of EducationHangzhou 310018China

This paper proposes a two-stage point cloud super resolution framework that combines local interpolation and deep neural network based readjustment. For the first stage, the authors apply a local interpolation method to increase the density and uniformity of the target point cloud. For the second stage, the authors employ an outer-product neural network to readjust the position of points that are inserted at the first stage. Comparison examples are given to demonstrate that the proposed framework achieves a better accuracy than existing state-of-art approaches, such as PU-Net, Point Net and DGCNN(Source code is available at https://***/qwerty1319/PC-SR).

关键词： Neural network outer-product network point cloud super resolution

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The demand and conceptual architecture study of complex land system simulation test

The demand and conceptual architecture study of complex land...

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2012 International Conference on System simulation, ICUSS 2012

作者： Zhao, X.J. Science and Technology on Complex Land Systems Simulation Laboratory Beijing China

ISBN: (纸本)9781849195386

The complex land system is the major weapon system of army, which accomplish the manifold mission of army on the land. How to test and evaluation the capability and efficiency of the complex land system in the join operations face lots of problems. The demand and conceptual architecture study of land complex system simulation test is the first problem should to be resolve. So, we need first to analysis the demand and conceptual of complex land system, then, we can develop the simulation test system for land complex system which has architecture combat, semi-physical simulation, and engineer compute ability to meet the requirement of the land complex system simulation test. The major point of this paper is to put forward the conceptual model of the land complex land system test and build the architecture of the simulation test environment.

关键词： Computer architecture

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The Study of simulation Architecture in Meta-Synthetic Hall 2

The Study of Simulation Architecture in Meta-Synthetic Hall

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2018 2nd International Conference on Data Mining, Communications and Information technology, DMCIT 2018

作者： Zhao, X.J. Kong, L.J. Zhao, J.Y. Science and Technology on Complex Land Systems Simulation Laboratory Beijing China

The meta-synthetic methodology is the scientific and effective way to solve the problems of the complicated large system. Through the meta-synthetic Hall, we combined the expert, repository, and simulation test together, building an environment to realize the Meta-Synthesis methodology. In this article, we put forward simulation architecture for the Meta-Synthesis Hall. With the architecture, we can build the simulation system and do experiment for the Hall, supporting expert discussion and repository accumulation. We can solve the system experiment and data collection problems for complicated large system analysis, enforces system improve and perfect. © Published under licence by IOP Publishing Ltd.

关键词： Architecture

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Tactical communication effects federate for distributed simulations based on HLA

Tactical communication effects federate for distributed simu...

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2014 International Conference on simulation and Modeling Methodologies, Technologies and Applications, SMTA 2014

作者： Gan, Bin Hao, Jiaxin Zhang, Jingang Science and Technology on Complex Land Systems Simulation Laboratory Beijing China

ISBN: (纸本)9781845649821

Warfare simulation Environment for Army Weapon and Equipment systems (WSAWES) provide a tactically robust environment for simulation experiments. The science and technology on complex Land systems simulation laboratory has now developed a tactical communication effects federate (TCEF) integrated with QualNet to model tactical communications systems and networks. TCEF interacts with WSAWES’s CGF that creates a constructive force-on-force simulation environment where communications are modeled by the TCEF and behaviors are modeled by the CGF. As the TCEF is already being integrated into distributed experiments in ghost mode, the TCEF services effort appears to be promising in meeting the stated goals, such as analysis for the connectivity and delay. © 2014 WIT Press.

关键词： Military applications

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A study on formation configuration design for long rang anti-radiation loitering munitions 27

A study on formation configuration design for long rang anti...

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27th Chinese Control and Decision Conference, CCDC 2015

作者： Tang, Xue-Mei Yuan, Cao Bo, Pu Bin, Gan Science and Technology on Complex Land Systems Simulation Laboratory Beijing China

ISBN: (纸本)9781479970179

Aiming at improving the target positioning accuracy, the formation configuration of anti-radiation loitering munitions is optimized. Firstly the time difference measuring error and positioning error of the loitering munitions are analyzed and the error propagation model is developed. Then the formation configuration design model is established based on the proposed time difference localization algorithm and the formation flying boundary conditions. Finally, considering the nonlinear features of optimization function for configuration optimization design, the genetic algorithm is introduced to obtain the optimal configuration. The simulation results show that, compared with the traditional formation configurations, the optimization design of configuration can acquire higher estimation accuracy of target position. Besides, the designed configuration has strong robustness. High accuracy estimations of target position can be obtained under a wide range of target position changes. © 2015 IEEE.

关键词： formation configuration loitering munitions optimization design time difference localization

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Study on semi-active suspension system of tracked vehicle based on variable universe fuzzy control

Study on semi-active suspension system of tracked vehicle ba...

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2011 IEEE International Conference on Mechatronics and Automation, ICMA 2011

作者： Kong, Lingjie Zhao, Xinjun Qi, Baili Science and Technology on Complex Land Systems Simulation Laboratory Beijing China

ISBN: (纸本)9781424481149

The suspension system with high performances is an important factor ensuring the tracked vehicle mobility and comfortable in different situations. Magneto rheological dampers, which are semi-active suspension equipment that use magneto rheological fluids to produce controllable force, can be used as smart actuators to reduce the vibrations of mechanical systems. An analytical study is performed in this article to examine the effectiveness of this type of actuator in suppressing the vibrations of a tracked vehicle suspension system. Based on the fluid mechanics theory, an amendment dynamic model of magneto rheological damper is derived. Considering the suspension characteristic and uncertainty of a magneto rheological damper, a variable universe fuzzy controller is designed to achieve a control of active variable damping. The results proved that the derived magneto rheological damper dynamic model is correct and indicated that the designed variable universe fuzzy controller could reduce the tracked vehicle vibration, which will further establish the basis of engineering application for a magneto rheological damper on semi-active suspension. © 2011 IEEE.

关键词： Controllers

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A study on formation configuration design for long rang anti-radiation loitering munitions

A study on formation configuration design for long rang anti...

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第27届中国控制与决策会议

作者： Tang Xue-mei Cao Yuan Pu Bo Gan Bin Science and Technology on Complex Land Systems Simulation Laboratory

ISBN: (纸本)9781479970186

Aiming at improving the target positioning accuracy,the formation configuration of anti-radiation loitering munitions is *** the time difference measuring error and positioning error of the loitering munitions are analyzed and the error propagation model is *** the formation configuration design model is established based on the proposed time difference localization algorithm and the formation flying boundary ***,considering the nonlinear features of optimization function for configuration optimization design,the genetic algorithm is introduced to obtain the optimal *** simulation results show that,compared with the traditional formation configurations,the optimization design of configuration can acquire higher estimation accuracy of target ***,the designed configuration has strong *** accuracy estimations of target position can be obtained under a wide range of target position changes.

关键词： loitering munitions formation configuration time difference localization optimization design

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Architecture analysis for avionics prognostics and health management system

Architecture analysis for avionics prognostics and health ma...

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2021 CAA Symposium on Fault Detection, Supervision, and Safety for Technical Processes, SAFEPROCESS 2021

作者： Chen, Runfeng Hu, Yang Hou, Yanze Beijing China Science and Technology on Complex Aviation System Simulation Laboratory 9236 Beijing China

ISBN: (纸本)9781665401159

Prognostics and Health Management (PHM) has been researched on for recent years, and extensive studies have been done on hot topics into this field, such as diagnostics, prognostics, and decision making. However, how to evaluate PHM system architecture is still lacking. This is particularly important when designing avionics system equipped with PHM functions. We propose a general, time-variant architecture model that can simulate PHM system. Performance metrics are calculated to quantitatively evaluate the system architecture. This is useful to find differences of architectures in the earlier design stage in engineering. A case study is presented of the use of architecture modelling to show the effectiveness. And future works are discussed. © 2021 IEEE.

关键词： Decision making

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Unified information modeling for achieving high-performance information sharing in the information grid

Unified information modeling for achieving high-performance ...

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2012 2nd International Conference on Management, Manufacturing and Materials Engineering, ICMMM 2012

作者： Zhang, Ying-chao Zhang, Jing Qin-Zhang, Yu Feng, Ye Wei, Li Zhi-Ming, Shen National Key Laboratory of Science and Technology on Complex Systems Simulation Beijing China

ISBN: (纸本)9783037855423

In this paper, an unified information description model ("UIDM" for short) is proposed to model information from multiple sources in the Information Grid uniformly. In the UIDM: 1) An unified information description language derived from the ODLI 3 is presented to describe information uniformly to resolve the information heterogeneity;2) A set of diagrammatized information modeling symbols are defined to model the information diagrammatically to illustrate the semantic relationships between information classes;3) An information capability model is advanced to model the capability of information from different information sources, based on which the high-performance global views for information sharing are to be constructed. © (2013) Trans Tech Publications, Switzerland.

关键词： Semantics

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