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Mining Method Of Crop Spectral And Image Correlation Modelbased On Spatio-Temporal Information, Ronghua Gao, Qifeng Li, Jingqiu Gu, Sun Xiang 2019 1. Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; ;2. National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China; ;3. Key Laboratory for Information Technologies in Agriculture, Ministry of Agriculture, Beijing 100097, China; ;4. Beijing Engineering Research Center of Agricultural Internet of Things, Beijing 100097, China;

Mining Method Of Crop Spectral And Image Correlation Modelbased On Spatio-Temporal Information, Ronghua Gao, Qifeng Li, Jingqiu Gu, Sun Xiang

Journal of System Simulation

Abstract: When crop disease occurs, it is often displayed in the leaf, and the appearance and internal structure of the crop are changed, and the growth environment also has a certain influence on the disease. The growth environment, leaf RGB images and spectral images are fused to study the sparse feature recognition method of crop diseases based on information combination of multi spectral images. In this paper, a spatial-temporal information mining method for crop spectral and image correlation models is studied. The correlation between spectral reflectance characteristics of crop diseases and crop development, health status and growth conditions are analyzed …


A Practical Approach For Building The Model Family’S Framework Of A Simulation System, Xiaocheng Liu, Bin Chen, Xiaogang Qiu 2019 1. Troop 31002 of the PLA, Beijing 100049, China; ;2. School of System Engineering, National University of Defense Technology, Changsha 410073, China;

A Practical Approach For Building The Model Family’S Framework Of A Simulation System, Xiaocheng Liu, Bin Chen, Xiaogang Qiu

Journal of System Simulation

Abstract: The model architecture of a simulation system is derived from its family’s framework, and the building approach is the first issue to be tackled to build a simulation system. Considering the experience for building model family’s framework of some typical simulation systems and the recent development of modeling technology, this paper gives a measure-centred guidable procedure for building the model family’s framework of a simulation system, summarizes its basic rules, as well as lists some key technologies and supporting tools. The approach describes step-by-step the process of framework building by two phases (eight steps). Our proposed approach has been …


Edge-Side Simulation Method And Framework Based On Micro-Services, Yanlong Zhai, Wenxin Sun, Tianhong Bao, Yang Kai, Duzheng Qing 2019 1.School of Computer Science, Beijing Institute of Technology, Beijing 100081, China; ;

Edge-Side Simulation Method And Framework Based On Micro-Services, Yanlong Zhai, Wenxin Sun, Tianhong Bao, Yang Kai, Duzheng Qing

Journal of System Simulation

Abstract: Aiming at the multi-devices, big data and low-latency simulation requirements in the Internet of Things, we define a concept of edge-side simulation and a simulation mode based on micro-services referring to the computational characteristics and architecture of edge computing and fog computing. For the link constraint and high-latency processing defects of "cloud simulation", a lightweight edge-side simulation platform framework combining edge computing and fog computing is designed, and the simulation speed is further accelerated by real-time simulation with LVC simulation system. Compared with the existing simulation frameworks, the edge-side simulation framework has the remarkable features of lightweight, high real-time, …


Research On Battle Damage Assessment Method Of Aggregating Target In Theater-Level, Qihao Hou, Yiping Yao, Cao Xiang 2019 College of System Engineering, National University of Defense Technology, Changsha 410073, China;

Research On Battle Damage Assessment Method Of Aggregating Target In Theater-Level, Qihao Hou, Yiping Yao, Cao Xiang

Journal of System Simulation

Abstract: The damage adjudication model in the theater-level combat simulation is the key to judge the target damage status and evaluate the attack process. The current research mainly focuses on the abstract modeling of single ground target, and the needs of the damage assessment of ground aggregation targets in large-scale joint operations cannot be met. The ground aggregation target is decomposed into different sub-targets through the structure tree, and the sub-target value is given to determine the main attacked target. Standard sub-targets are created based on the sub-target's shape and presence or absence of protection. The mapping relationship between …


Volume Rendering Viewpoint Selection Based On Adaptive Scaleable Chaotic Particle Swarm Optimization, Yanyang Zeng, Zehao Zhang, Yunxia Feng 2019 College of Computer Science and Technology of Henan Polytechnic University, Jiaozuo 454000, China;

Volume Rendering Viewpoint Selection Based On Adaptive Scaleable Chaotic Particle Swarm Optimization, Yanyang Zeng, Zehao Zhang, Yunxia Feng

Journal of System Simulation

Abstract: People often perform volume rendering viewpoint selection by means of manual exploration. However, when the volume data is large, it often takes a lot of time to reduce the efficiency. An adaptive scaling chaotic particle swarm optimization algorithm is proposed for the automatic selection of viewpoints in volume rendering. The algorithm introduces image information entropy to evaluate the quality of images corresponding at different viewpoints. The entropy value is used as the basis for optimizing the viewpoint and the fitness value of the particle swarm optimization, so as to realize the intelligent and automatic choice, and finally obtain the …


Research Of Analysis Method Of Presenters’ Reputation Record, Zhiyong Yu, Wang Na, Niu Kan, Jindong Wang 2019 Zhengzhou Institute of Information Science and Technology, Zhengzhou 450001, China:;State Key Laboratory of Mathematical Engineering and Advanced Computing, Zhengzhou 450001, China;

Research Of Analysis Method Of Presenters’ Reputation Record, Zhiyong Yu, Wang Na, Niu Kan, Jindong Wang

Journal of System Simulation

Abstract: In order to satisfy the requirement of service presenters’ credibility from recommendation system, this paper put forward a method based on the analysis of reputation record to find the most credible presenters. The preference similarity between different users is calculated with users’ preference vectors. The relevance of the fields, recommendation response rate and recommendation satisfaction rate are then calculated to filter the presenters. The presenters’ current reputation is calculated by introducing the penalty factor. We filter the presenters’ reputation record with localized changes and tendentious changes and calculate the skewness coefficient and kurtosis coefficient of the reputation records …


Analysis Of Key Issues In Building Joint Operation Analytic Simulation System, Gensheng Hu, Shiguang Yue, Xiaogang Qiu, Zhao Kai 2019 PLA Unit 31002, Beijing 100094, China;

Analysis Of Key Issues In Building Joint Operation Analytic Simulation System, Gensheng Hu, Shiguang Yue, Xiaogang Qiu, Zhao Kai

Journal of System Simulation

Abstract: The significance and reasons of key problems including the simulating efficiency, the model systems, the standard specification and system application are analyzed. On this basis, we discuss how to use techniques of high performance simulation engine, system modeling focused on C4ISR, artificial intelligence, and warfighting experimentation to solve these problems. We propose “two-line & three-layer” model VV&A management, “three-in-one” cooperative working pattern, and standard operation process of simulation analysis. Our works provide references for construction and application of the future joint operations simulation system.


Visualized Parameter-Tuned Algorithm For Control Loading System, Xie Chen, Shuchu Zhang, Zhenyu Sun 2019 1. School of Air Transport Shanghai University of Engineering Science, Shanghai 201620, China; ;

Visualized Parameter-Tuned Algorithm For Control Loading System, Xie Chen, Shuchu Zhang, Zhenyu Sun

Journal of System Simulation

Abstract: To improve the fidelity of flight simulators, a control loading system is introduced in this paper which has the most direct effect on the pilot's intuitive perception. The overall design, hardware construction and digital simulation results of the system are given. In the process of system realization, the visual displacement-force loading configuration scheme is adopted to solve such problems as requirement changes or parameter excursions in hardware. The algorithm of output waveform curve adjustment based on cubic spline interpolation is proposed and the parameters are adjusted according to demand through graphical operation interface by maintenance personnel. The traditional method …


Development History And Case Study Of Interoperability Between Us Combat Simulation And C2 Systems, Xiangzhong Xu, Zaijiang Tang, Yaxin Tan 2019 Department of Equipment Command and Administration, Academy of Armored Force Engineering, Beijing 100072, China;

Development History And Case Study Of Interoperability Between Us Combat Simulation And C2 Systems, Xiangzhong Xu, Zaijiang Tang, Yaxin Tan

Journal of System Simulation

Abstract: The analysis of heterogeneity between U.S. combat simulation and command & control (C2) systems is carried out. The roadmap, its main development stage and main tendency of interoperability between US combat simulation and C2 systems are also analyzed. Two case studies, Viz., the Naval Simulation System/the Global Command and Control - Maritime (NSS/GCCS-M) Federation and C4I Team Training System (CTTS) are conducted, which are representatives of bidirectional interfaces and embedded interoperability respectively. The main measures such as ensuring interoperability which is a shared responsibility between the M&S and C2 communities, long-term plan and coordination are beneficial to the promotion …


Research On Assessment Of Operation System‘S Resilience Based On Test Bed, Rong Ming, Xiaofeng Hu, Jingyu Yang 2019 1.College of Joint Operation, National Defense University, Beijing 100091, China; ;2.Graduate School, National Defense University of PLA, Beijing 100091, China;

Research On Assessment Of Operation System‘S Resilience Based On Test Bed, Rong Ming, Xiaofeng Hu, Jingyu Yang

Journal of System Simulation

Abstract: The warfare under the information condition is the System of Systems (SOS) combat. The resilience of SOS is the ability to support the functions necessary for mission success with higher probability, shorter periods of reduced capability, and across a wider range of scenarios, conditions, and threats, in spite of hostile action or adverse conditions. It has gradually become a focus in developed countries. The problems of SOS resilience evaluation are analyzed and a analysis method under test bed simulation is constructed. By meaning of integrity,dynamic and confrontation, we propose resilience assessment models to evaluate resilience by competitive game and …


Multi-Stage Filtering Method For Pedestrian Navigation And Location, Zhidan Gu, Li Qing, Zhao Hui 2019 Beijing Key Laboratory of High Dynamic Navigation Technology, University of Beijing Information Science & Technology, Beijing 100101, China;

Multi-Stage Filtering Method For Pedestrian Navigation And Location, Zhidan Gu, Li Qing, Zhao Hui

Journal of System Simulation

Abstract: In the process of navigation and location of a pedestrian for a wearable IMU, the inertial device generates an accumulated drift error affecting the navigation and location accuracy of pedestrian navigation. A multi-stage filtering method is studied: after the zero-speed detection and the zero-speed correction based on Extended Kalman Filter are carried out, the vector domain is divided by the indoor geometric layout features, and the projected matching model is used to determine the optimal coordinates of the nodes to get the trajectory. Using the self-developed MIMU pedestrian navigation module, a field experiment was conducted. The experimental results show …


Method Of Missile Salvo Hardware-In-The-Loop Simulation Based On Multi Scattering Center Analog Measurement, Baiting Liu, Xiaolei Wang, Chaolei Wang, Yuhui Tao, Zhaowei Yang 2019 1. Science and Technology on Special System Simulation Laboratory, Beijing Simulation Center, Beijing 100854, China; ;2. Beijing Complex Product Advanced Manufacturing Engineering Research Center, Beijing Simulation Center, Beijing 100854, China;

Method Of Missile Salvo Hardware-In-The-Loop Simulation Based On Multi Scattering Center Analog Measurement, Baiting Liu, Xiaolei Wang, Chaolei Wang, Yuhui Tao, Zhaowei Yang

Journal of System Simulation

Abstract: For the verification requirements of the hardware-in-the-loop simulation test of a missile salvo guidance control system, this paper proposes a hardware-in-the-loop simulation test method for anti-aircraft missile based on multi-scattering center simulation to study the simulation method of missile salvo and the control method of multi-scattering center simulation of complex radio frequency target. The hardware-in-the-loop simulation verification test was carried out by constructing a hardware-in-the-loop simulation verification system. The verification test results show that the method can simulate the first missile and the target. The seeker can stably track the multi-scatter target, the target analog signal output maintains high …


Trajectory Optimization Design Of Ascending Phase For Solid Launch Vehicle Based On Fish-Swarm Algorithm, Xiaosu Li, Chao Tao, Songyan Wang 2019 Control and Simulation Center, Harbin Institute of Technology, Heilongjiang Province, Harbin 150001, China;

Trajectory Optimization Design Of Ascending Phase For Solid Launch Vehicle Based On Fish-Swarm Algorithm, Xiaosu Li, Chao Tao, Songyan Wang

Journal of System Simulation

Abstract: The trajectory optimization of ascending stage for multi-stage solid launch vehicle using artificial fish-swarm optimization algorithm is presented. The flight program angle of ascending stage is designed. A pseudo-spectral method is used to discretize the dynamic optimization problem into the parameter optimization problem. The fish-swarm algorithm is used to solve an initial ballistics as the initial value, and the parameter optimization problem is solved by SQP. The simulation results show that the fish-swarm algorithm can effectively solve the trajectory optimization problem of multi-stage solid launch vehicles. The flight duration of the optimized scheme is reduced. The algorithm has …


Numerical Simulation Of Shock Wave Effect On Damaged Upper And Lower Adjacent Structures Of Ships, Run Miao, Weili Wang, Hongjie Liu, Shiyong Wu, Zeng Liang 2019 1.College of Coast Defence Arm, Naval Aeronautical University, Yantai 264001, China; ;

Numerical Simulation Of Shock Wave Effect On Damaged Upper And Lower Adjacent Structures Of Ships, Run Miao, Weili Wang, Hongjie Liu, Shiyong Wu, Zeng Liang

Journal of System Simulation

Abstract: The damage effect of shock wave on the upper and lower adjacent cabin structure of small warship is studied. LS-DYNA finite element analysis software is used. Damage modes of upper and lower adjacent cabin structures under dynamic and static explosion are analyzed. Cabin damage under different charging speeds is calculated. The results show that in the dynamic explosion state, there is a big difference between the shock wave field and the static explosion, which causes different modes of bulkhead damage. When the explosive happens in the lower cabin, the upper cabin bulkhead is extruded by the deformation of the …


Research On Task Allocation Method Of Unmanned Aerial Vehicle Cluster Network, Rugen Wang, Weimin Li, Yonglan Liu, Jinsong Liu 2019 Graduate school of air force engineering university, Xi'an 710051, China;

Research On Task Allocation Method Of Unmanned Aerial Vehicle Cluster Network, Rugen Wang, Weimin Li, Yonglan Liu, Jinsong Liu

Journal of System Simulation

Abstract: The cluster network is one of the typical multi unmanned aerial vehicle(UAV)cooperative engagement mode. Task allocation is the basic premise making use of combat effectiveness of the cluster network. Aiming at this problem, the model and algorithm of task allocation are put forward. Task allocation problem of the cluster network and hierarchical structure of task allocation are analyzed. Task allocation model of the cluster network is built via the idea of hierarchy analysis. Task allocation algorithm of the cluster network based on PSO-ICWPA is put forward combining the advantage of intelligent optimization algorithm. Simulated analysis of task allocation model …


Penetrating Capability Of Different Annular Shaped Charge Warhead, Tan Bo, Hongjie Liu, Run Miao, Zeng Liang 2019 1.Academy of weapons Engineering; Naval University of Engineering, Wuhan 430000, China; ;

Penetrating Capability Of Different Annular Shaped Charge Warhead, Tan Bo, Hongjie Liu, Run Miao, Zeng Liang

Journal of System Simulation

Abstract: On the basis of the existing missile warhead, an annular shaped charge is added in the front of warhead without changing the size and increasing the weight of the warhead. ANSYS/LS-DYNA is used to simulate the whole process of the formation of annular jet and penetration of a double target and analyze the movement characteristics of two kinds of different annular jet in the air. The target damage effect is acquired. The calculation results show that the difference of the penetration ability on the double layer target of jet between center -ball shaped charge and that of the hollow …


Research On Construction Method Of Data-Driven Equipment Effectiveness Evaluation Model, Yingbo Lu, Xiaochao Qian, Chen Wei, He Shu, Zhifeng Lu 2019 Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China;

Research On Construction Method Of Data-Driven Equipment Effectiveness Evaluation Model, Yingbo Lu, Xiaochao Qian, Chen Wei, He Shu, Zhifeng Lu

Journal of System Simulation

Abstract: The problem of weapon equipment effectiveness evaluation is complex and nonlinear. However, the analytical method cannot empower evaluation index objectively or establish the mathematical model accurately. This paper proposes a data-driven evaluation model construction method. We introduce meta-model technology like GA-BP algorithm to construct effectiveness evaluation model, which can mine relationships and weights between indicators objectively. We take the interception effectiveness evaluation of a certain type of air defense missile weapon system as an example to verify the feasibility of this method. The method is helpful to optimize technical indicators and predict effectiveness rapidly.


Real-Time Rendering Of Massive Cad Models For High-Credibility Simulation, Junjie Xue, Junhua Zhou, Guoqiang Shi, Huiyang Qu 2019 1. State Key Laboratory of Intelligent Manufacturing System Technology, Beijing Institute of Electronic System Engineering, Beijing 100854, China; ;2. Beijing Complex Product Advanced Manufacturing Engineering Research Center, Beijing Simulation Center, Beijing 100854, China; ;

Real-Time Rendering Of Massive Cad Models For High-Credibility Simulation, Junjie Xue, Junhua Zhou, Guoqiang Shi, Huiyang Qu

Journal of System Simulation

Abstract: The full-size 3D models of complex products have huge data sizes and are extremely complex. It is difficult to meet the requirements for the real-time rendering efficiency of the simulation application by merely relying on the performance of the existing computer hardware. This paper proposes a geometry metric method based on minimum bounding box and multi-view projection, which can accurately identify narrow and irregular small parts in the model. Combining with a model-details-filtering based adaptive LOD rendering algorithm, the real-time rendering of massive CAD models is realized. The experiments are carried out on the Boeing 777 aircraft model. The …


Simulation Of Influence Of Coal-Based Industry On Water Resources Bearing System, Yalin Chen, Wangsheng Gui, Qianjin Dong, Ye Chun, Haotian Wu 2019 1. Nanjing University of Finances and Economics, Nanjing 210023, China; ;

Simulation Of Influence Of Coal-Based Industry On Water Resources Bearing System, Yalin Chen, Wangsheng Gui, Qianjin Dong, Ye Chun, Haotian Wu

Journal of System Simulation

Abstract: The contradictory spatial distribution between China's coal resources and water resources has become the stress to sustainable development of regional ecological environment and social economy. The paper presents interactive simulation model of regional water resources bearing system based on System Dynamics; and then Ningxia Hui Autonomous Region is used as an example, the dynamic process of local water bearing system was simulated under different scenarios of planning. The simulation results show that regional sustainable development of water resources would be achieved if the resources are allocated based on the market, while the gap between supply and demand of regional …


Research Of Turbulence Model Parameters Correction For Oil Flow Of Pipeline, Jisen Wang, Jia Qian, Chen Chen, Yaping Zhang, Du Jiang 2019 1. School of Automation, Northwestern Poly technical University, Xi’an 710072, China;; ;

Research Of Turbulence Model Parameters Correction For Oil Flow Of Pipeline, Jisen Wang, Jia Qian, Chen Chen, Yaping Zhang, Du Jiang

Journal of System Simulation

Abstract: Because of the limitation of the parameters in the Realizable k-ε two equations model, the model is no longer suitable to simulate the pressure loss of the turbulent oil flow of pipelines. A mathematical model of the oil flow of pipeline is built, and the Realizable k-ε model default parameters are modified according to the test results of YH-15 aviation hydraulic oil to obtain new parameters used to simulate the pressure loss in other conditions. Compared to the model with default parameters, numerical simulations and experimental results show that the maximum relative error is reduced …


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