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Articles 1561 - 1590 of 4209

Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

Collision Simulation Analysis Of Sam Movable Guardrail, Hongjun Cui, Sixue Li, Minqing Zhu, Li Xia Jan 2021

Collision Simulation Analysis Of Sam Movable Guardrail, Hongjun Cui, Sixue Li, Minqing Zhu, Li Xia

Journal of System Simulation

Abstract: Aiming at the problem of low anti-collision grade of the movable guardrail at the opening of the central divding belt of the expressway, a SAm-level concrete movable guardrail and a new connecting device are proposed. Based on the finite element method, the collision model between the vehicle and the guardrail is established, and the collision process is also calculated by LS-DYNA. According to the collision results of different vehicle types, the safety performance of the guardrail is evaluated in terms of cushioning, blocking and guiding performance. The OIV value is less than 12 m/s for small vehicles' collision with …

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Research On Sins/Gnss/Train-Speed Integrated Navigation Algorithm, Wang Ke, Ligang Liu, Bin Zhou, Zhiyong Bu Jan 2021

Research On Sins/Gnss/Train-Speed Integrated Navigation Algorithm, Wang Ke, Ligang Liu, Bin Zhou, Zhiyong Bu

Journal of System Simulation

Abstract: The precise train positioning under complicated railway environment has been a key technical challenge for train navigation currently. In the conventional solutions, in case of satellite signals being weak or indiscernible, the task of positioning has to be undertaken by SINS alone. This will cause some serious error-accumulation problems, especially when low-cost inertial devices are used. In order to solve this problem, we propose a novel integrated train navigation algorithm, which includes two working modes. The SINS/GNSS mode is designed for the situation that satellite signals are valid, whereas the SINS/wheel-speed mode is for the weak signal environments. Both …

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Threat Assessment For The Defense Penetration Paths Of Air Strike Aircrafts Based On Radar Chart, Shengli Liu, Wang Gang Jan 2021

Threat Assessment For The Defense Penetration Paths Of Air Strike Aircrafts Based On Radar Chart, Shengli Liu, Wang Gang

Journal of System Simulation

Abstract: Threat assessment for the defense penetration paths of air strike aircrafts provides important evidence for evaluating and improving the deployment of air defense. Considering that traditional threat assessment methods are difficult to intuitively reflect the threat degree of each path and the value of each evaluation indicator, a novel method of threat assessment for defense penetration paths based on radar chart is proposed. The threat assessment indicator system for the defense penetration paths of air strike aircrafts is put forward. The weights of threat assessment indicators are calculated by the group decision analytic hierarchy process (AHP) and the method …

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Architecture Design Of An Emergency Command Simulation Exercise Platform Based On Tena, Peng Zhang, Qinfu Li Jan 2021

Architecture Design Of An Emergency Command Simulation Exercise Platform Based On Tena, Peng Zhang, Qinfu Li

Journal of System Simulation

Abstract: Based on the analysis of the current situation and development needs of the emergency command simulation exercise platform and the common characteristics of most emergency command case scenarios, an emergency command simulation exercise platform architecture based on TENA (Test and Training Enabling Architecture) is designed and put forward, which can expand various simulation models such as disaster accidents, disaster-bearing subjects, higher-lower linkage command organizations, rescue forces, natural environment, etc. in a multi-granularity and modular manner, and interface with various exercise support and analysis evaluation tools, as well as heterogeneous systems such as external three-dimensional simulation, virtual reality/augmented reality equipment …

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Overview Of Optimization Problems Regarding Emergency Organization Allocation Based On Mathematical Programming, Cejun Cao, Congdong Li Jan 2021

Overview Of Optimization Problems Regarding Emergency Organization Allocation Based On Mathematical Programming, Cejun Cao, Congdong Li

Journal of System Simulation

Abstract: To improve the utilization of human resources in large-scale natural disasters and reduce various losses, how to use mathematical programming approach to optimize emergency organization allocation strategy is the currently urgent and critical issue. A decision framework or conceptual model for emergency organization allocation optimization is proposed. The current status of mathematical programming model for emergency organization allocation is presented from the perspective of task sequence and objective quantity. An overview on the exact and heuristic algorithm to solve the proposed model is conducted. Potential issues for in-depth study with respect to simulation and modeling of emergency organization allocation …

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Evolutionary Simulation Of Online Public Opinion Based On The Bert-Lda Model Under Covid-19, Muni Zhuang, Li Yong, Tan Xu, Taitian Mao, Kaicheng Lan, Lining Xing Jan 2021

Evolutionary Simulation Of Online Public Opinion Based On The Bert-Lda Model Under Covid-19, Muni Zhuang, Li Yong, Tan Xu, Taitian Mao, Kaicheng Lan, Lining Xing

Journal of System Simulation

Abstract: The construction of a large-scale online public opinion evolution simulation model has guidance value for differentiated emergency management and public opinion guidance in the worst-hit areas in Wuhan and the other areas in China during the outbreak of the COVID-19. In order to realize the fine-grained simulation of the public sentiment evolution of the topic, the LDA topic model is deeply integrated with BERT word vector to optimize the topic vector and power the text topic clustering. At the same time, on the basis of improving BERT pre-training task, the deep pre-training task is superimposed to improve the accuracy …

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Research On Particle Filter Algorithm Based On Improved Grey Wolf Algorithm, Weigang Li, Li Yang, Yuntao Zhao, Baokang Yan Jan 2021

Research On Particle Filter Algorithm Based On Improved Grey Wolf Algorithm, Weigang Li, Li Yang, Yuntao Zhao, Baokang Yan

Journal of System Simulation

Abstract: The traditional particle filter algorithm is prone to particle depletion and weight degradation, and a large number of particles are needed to make an accurate estimation of non-linear system. A novel particle filter algorithm based on grey wolf optimization algorithm is proposed. The particles are employed to characterize the individuals of grey wolf and simulate the process of wolf hunting, which makes the particles move to the high likelihood region of posterior probability and improve the rationality of the distribution of the particles. Levy flight strategy is introduced in grey wolf algorithm to improve the convergence speed. The adaptive …

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A Quantization-Based Integration Method For Stiff Ordinary Differential Equations, Zhihua Li, Jiang De, Chenjia Wu, Zhihua Fan Jan 2021

A Quantization-Based Integration Method For Stiff Ordinary Differential Equations, Zhihua Li, Jiang De, Chenjia Wu, Zhihua Fan

Journal of System Simulation

Abstract: QSS(Quantized State System) has advantages over the traditional time-discrete integration methods in solving general ordinary differential equation (ODE) systems, but it is not suitable for solving the stiff ODE systems. To effectively solve the stiff ODE systems, a step-correction optimization algorithm based on QSS (SCOA based-on QSS) is proposed, which combines the ideas of the QSS method and the implicit trapezoidal integral method. The simulation results of three typical stiff ODE cases show that the SCOA based-on QSS algorithm has advantages over other algorithms, and the simulation accuracy can be significantly improved by appropriately reducing the quantum size.

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Cold Load Prediction Model Based On Improved Pso-Bp Algorithm, Junqi Yu, Wenqiang Jing, Anjun Zhao, Yanhuan Ren, Zhou Meng, Xinle Huang, Yang Xue Jan 2021

Cold Load Prediction Model Based On Improved Pso-Bp Algorithm, Junqi Yu, Wenqiang Jing, Anjun Zhao, Yanhuan Ren, Zhou Meng, Xinle Huang, Yang Xue

Journal of System Simulation

Abstract: Aiming at the low correlation between input and output data and the error of prediction model in PSO-BP neural network prediction model, a combined prediction method based on JMP, PSO-BP neural network and Markov chain is proposed. The method first uses JMP data processing software to process the input data and eliminating the low coupling degree samples, then conducts PSO-BP neural network training to obtain the cold load prediction results, and finally uses markov chain to eliminate the random errors generated by the system to obtain the final prediction results. The results show that the combined prediction method has …

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Research On Intelligent Design And Simulation Method Of Screw Machine Process, Guodong Sun, Qichang He Jan 2021

Research On Intelligent Design And Simulation Method Of Screw Machine Process, Guodong Sun, Qichang He

Journal of System Simulation

Abstract: Aiming at the difficulty during the process design of the automatic screw machines, such as low efficiency and poor quality, a screw machine process design and verification system is developed. Supported by image recognition technology, the system would automatically obtain the quantity and the locations of the screwing holes from the top view. An optimization model will be established to optimize the tightening sequence of the screw according to RSA (Radar Spiral Algorithm) and improved genetic algorithm. An integration is conducted into Tecnomatix to simulate those optimized sequence in case of collision. The results indicate that the …

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Research On Virtual Simulation Training System For Multi-Position Collaborative Operation In Oilfields, Xianmei Liu, Jia Di, Liu Fang Jan 2021

Research On Virtual Simulation Training System For Multi-Position Collaborative Operation In Oilfields, Xianmei Liu, Jia Di, Liu Fang

Journal of System Simulation

Abstract: Aiming at the demands of multi-position collaborative operation in oilfields, the virtual simulation training system for multi-position collaborative operation in oilfields is studied. It shows the development mode and architecture of the system which uses the user perception environment to obtain data for the autonomous decision, and uses the collision detection process to simulate the interaction between user and device. The co-simulation strategy and the network communication protocol are designed. The room management is used to ensure that the scenes in the group are consistent in real time and the scenarios between the groups are independent. The Non-Player Character(NPC) …

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Traversal Path Planning And Simulation Of Robot Based On Radiation Scanning, Bin Lin, Guanghui Han, Chenchen Song, Yajing Zhang Jan 2021

Traversal Path Planning And Simulation Of Robot Based On Radiation Scanning, Bin Lin, Guanghui Han, Chenchen Song, Yajing Zhang

Journal of System Simulation

Abstract: Aiming at the high repetition rate and many turns of robot paths based on BINN algorithm, an ITPPA combining the template model and the RS algorithm is proposed. The BINN algorithm is used to formulate the non-obstacle walking strategy. Multiple obstacle avoidance path templates are designed to ensure that the robot could avoid obstacles in an orderly manner. RS algorithm is used to guide the robot to escape the dead zone quickly. Simulation results show that, compared with BINN algorithm, ITPPA could not only effectively reduce the path repetition rate and the number of turning and energy consumption …

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Safety Evaluation And Risk Level Prediction Of Driving Behavior Considering Multi-Factors Influence, An Yu, Pengpeng Jiao, Zixiu Bai Jan 2021

Safety Evaluation And Risk Level Prediction Of Driving Behavior Considering Multi-Factors Influence, An Yu, Pengpeng Jiao, Zixiu Bai

Journal of System Simulation

Abstract: In order to study the influence of multi-factors of human-vehicle-road on driving behavior and vehicle safety status in road traffic system, a simulated driving comparison test of six scenarios combined by multiple factors is designed. Driving simulator, physiography and eye tracker are used to collect 19 indicators related to driving behavior respectively. The differences of sample data are compared by variance analysis. The nonlinear SVM(support vector machine) is used to classify and predict the sample data. The driving behavior risk level prediction model is established, and the validity of the model is verified by the experimental data. The …

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Improved Wolf Pack Algorithm For Distribution Of Molds On Molds Table, Zhonghua Han, Yuehan Liu, Li Man, Liangliang Sun, Hongzhi Zheng Jan 2021

Improved Wolf Pack Algorithm For Distribution Of Molds On Molds Table, Zhonghua Han, Yuehan Liu, Li Man, Liangliang Sun, Hongzhi Zheng

Journal of System Simulation

Abstract: In order to solve the problem of the distribution of molds on the mold table in the production process of concrete prefabricated components, a method combining Bottom-Left Algorithm (BLA) and Improved Wolf Pack Algorithm (IWPA) is proposed. Improved Wolf Pack Algorithm is for optimizing the order of upper line and the mold used for each member is sequentially assigned to the mold table according to the upper line. BLA is used to determine the direction and position of the molds on the molds table. The WPA safari behavior is improved by introducing Levi's flying ideas and the Hamming …

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Study On Ultimate Carrying Capacity And Regulation Methods Of Urban Atmospheric Environment, Guangqiu Huang, Wenxin Wang Jan 2021

Study On Ultimate Carrying Capacity And Regulation Methods Of Urban Atmospheric Environment, Guangqiu Huang, Wenxin Wang

Journal of System Simulation

Abstract: In order to solve the calculation problem of the ultimate carrying capacity of the atmospheric environment, the calculation formula of the ultimate carrying capacity of the atmospheric environment is proposed, and the system dynamics model with the ‘pollution index-energy' compliance as the constraint is constructed according to the urban energy planning, namely the PI-E-SD(Pollution Indicator-Energy-System Dynamics) model. In this model, the linear regression method is used to determine the pollution index, which solves the non-uniformity problem. The SD-modeling method is used to construct the “energy-economy-environment” simulation system, so that the government measures can be quantified to make the prediction …

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Real-Time Prediction Of Primary Flow By Mpc Method In Heating System, Zhongbo Li, Jia Meng, Kang Yan, Haihong Wang, Li Miao, Lü Qing, Jingjing Xie, Dajun Fang Jan 2021

Real-Time Prediction Of Primary Flow By Mpc Method In Heating System, Zhongbo Li, Jia Meng, Kang Yan, Haihong Wang, Li Miao, Lü Qing, Jingjing Xie, Dajun Fang

Journal of System Simulation

Abstract: Based on the model predictive control method, this paper uses the discrete controlled autoregressive model to establish the dynamic heat transfer delay model of the secondary network and the thermal station model. The polynomial fitting method of machine learning algorithm is applied to identify and calibrate the parameters of the secondary network model and the thermal station model. The primary flow rate of the heating station under future operating conditions is predicted based on the model results, which provides a basis for the quality-based regulation of heating system. The model is verified by measured data, and the actual …

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Cpm-Ga For Multi-Satellite And Multi-Task Simulation Scheduling, Liheng Mao, Deng Qing, Rouni Liu, Xianglong Kong Jan 2021

Cpm-Ga For Multi-Satellite And Multi-Task Simulation Scheduling, Liheng Mao, Deng Qing, Rouni Liu, Xianglong Kong

Journal of System Simulation

Abstract: With the increase of the number of satellites and targets, the space for solving satellite task planning increases rapidly. For large-scale multi-satellite and multi-task planning, a hierarchical optimization method, which consists of Critical Path Method (CPM) and Genetic Algorithm (GA) is proposed. The method decomposes the satellite task planning into two subproblems: task allocation and single-satellite task processing. Task allocation is realized by GA and a task allocation result corresponds to an individual of the population. The CPM is used in the single-satellite task processing to solve the fitness of each individual, which improves the optimization efficiency, ensures the …

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Impact Analysis Of Gun-On Target Parameters On The Blunting Effect Of The Soft Protective Human Body, Sun Fei, Wenmin Yan, Junbin Zhang, Yongjuan Wang, Xu Cheng Jan 2021

Impact Analysis Of Gun-On Target Parameters On The Blunting Effect Of The Soft Protective Human Body, Sun Fei, Wenmin Yan, Junbin Zhang, Yongjuan Wang, Xu Cheng

Journal of System Simulation

Abstract: In order to research the blunt impact effect of target-entry parameters of pistol bullets, the finite element models of the soft upper body of the pistol blunt with a soft-protected human body are developed. By hitting the heart, lung, liver and stomach at three target-entry velocities, the impact response of pistol bullet impacting on human torso with soft armor is numerically calculated by finite element method. The simulation results quantitatively reveal the pressure transmission mechanism of the human body with blunt body armor at different target speeds and positions and the law of blunt impact response at different target …

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Modeling And Simulation Of Physical Layer Security Strategy In Two-Way Cognitive Networks, Pan Lei, Li Zan, Zhili Zhang, Xiangyang Li Jan 2021

Modeling And Simulation Of Physical Layer Security Strategy In Two-Way Cognitive Networks, Pan Lei, Li Zan, Zhili Zhang, Xiangyang Li

Journal of System Simulation

Abstract: In order to improve the performance of the mobile communication system, the physical layer security transmission models of a two-way cognitive relay network with the primary network and eavesdropper are established, and a joint optimization strategy for relay selection and power allocation is proposed to protect the source-destination transmission against the eavesdropper. It can be seen from the simulation analysis that this non-convex optimization problem has many restrictions, and it is difficult to guarantee the feasibility of the initial solution generated randomly by the PSO algorithm, resulting in the difficulty of obtaining solution. Therefore, a hybrid optimization algorithm based …

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Study On Validation Of Simulation Models Based On Weight Matrix Gray Relational Analysis, Xiaolei Ning, Yingxia Wu, Zhanqi Chen Jan 2021

Study On Validation Of Simulation Models Based On Weight Matrix Gray Relational Analysis, Xiaolei Ning, Yingxia Wu, Zhanqi Chen

Journal of System Simulation

Abstract: When used to validation of simulation models, ordinary gray relational analysis (GRA) usually stresses the similarity but ignores the nearness between the simulation test time series and flight test time series, while the nearness is part of model error. To reduce the risk in application of GRA to validation of simulation models, a new matrix gray relational analysis was proposed, which was in view of the similarity and the nearness between the simulation test time series and flight test time series, so it had a higher accuracy and reliability. The new model could solve the relational analysis problem with …

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Research On Simplified Approach Of Multi-Physics Coupling Simulation, Xuegong Sun, Liu Jing Jan 2021

Research On Simplified Approach Of Multi-Physics Coupling Simulation, Xuegong Sun, Liu Jing

Journal of System Simulation

Abstract: Multi- physics coupling simulation of aircraft is a highly coupled and advanced nonlinear process. Traditionally, the data of professional model was collected through engineering algorithm, experience. The over- simplfied approach reduced the accuracy of the simulation result. Therefore, a simplified but effective approach according to the characteristics of each multi-physics coupling model needed to be found. Through multi- physics coupling simulation research which focused on the main contradictions and engineering requirements, ignores minor contradictions, depending on characteristics of the various couplings and application requirements, the simplified approach and conclusions were put forward and verified by examples.

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Inventory M Lodels With Transshipment Collaboration Among Bases Supporting Different Geographical Regions, Jinhong Zhong, Cheng Hao, Zhou Yun Jan 2021

Inventory M Lodels With Transshipment Collaboration Among Bases Supporting Different Geographical Regions, Jinhong Zhong, Cheng Hao, Zhou Yun

Journal of System Simulation

Abstract: A multi location inventory system composed of a depot and several bases that covers diferent geographical regions was addressed, where there was bidirectional transshipment between the locations at the same region, and unidirectional transshipment between the locations at the different region. Each location in the system faced isolated Poisson distribution demand and adopted continuous review (S-1, S) policy. According to the M/G/S/S queue theory, birth and death process model and approximate calculation thought, the inventory models for the loss sales case and backorder case were established respectively. A discrete event simulation procedure for the inventory system was designed to …

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Simulation Of Multiple Diffraction For Uwb Signals Under Nlos Environment, Han Tao, Jianxun Song, Hongcheng Wang Jan 2021

Simulation Of Multiple Diffraction For Uwb Signals Under Nlos Environment, Han Tao, Jianxun Song, Hongcheng Wang

Journal of System Simulation

Abstract: A time domain (TD) solution based on uniform theory of diffraction-physical optics (UTD-PO) was presented to analyze the multiple diffraction propagation characteristics of UWB signals under NLOS environment. The solution provided a simplified method, which utilized a recursion relation and did not need to incorporate the slope diffraction in the transition zone. The channel impulse response of the renowned Bertoni models was derived and the received signals could be predicted through a simple operation of convolution. The numerical results show that the proposed solution based on UTD-PO can find application in the analysis of multiple diffi-action and significantly reduces …

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Method For Real-Time Controllable Step-Length Human Leg Continuous Walking Motion Generation, Shuxu Jing, Zhang Di, Tinglei Zhang, Shaoxin Yuan Jan 2021

Method For Real-Time Controllable Step-Length Human Leg Continuous Walking Motion Generation, Shuxu Jing, Zhang Di, Tinglei Zhang, Shaoxin Yuan

Journal of System Simulation

Abstract: Based on a free walking description model which is not capable of step length control, an iteration algorithm was proposed for solving the corresponding straight walking motion according to the given single step length which could be continuously adjusted. The problem of smooth transition between two consecutive walking steps was solved by pose-wise Bezier weighting, which kept the starting and ending poses of a walking step constant. Continuous straight leg walking motion with continuously varied step length could be generated real-timely. The proposed method provided a solution for real-time continuoxis leg walking motion generation with known step lengths in …

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Behavioral Simulation Modeling Of Single Photon Avalanche Diode, Xu Yue, Xiaopeng Xie, Yue Heng Jan 2021

Behavioral Simulation Modeling Of Single Photon Avalanche Diode, Xu Yue, Xiaopeng Xie, Yue Heng

Journal of System Simulation

Abstract: An accurate behavioral simulation model for single photon avalanche photodiode (SPAD) was proposed. This presented model solved the convergence problem existed in SPAD avalanche current simulation, and achieved the basic static DC and dynamic AC behaviors modeling. The model functions were extended. Two important statistical effects of dark-counting and after-pulsing phenomena were included in this model according to their physical mechanisms. The model has been written in Verilog-A hardware description language, showing good characteristics of transplantation and universality. A good agreement with more than 90% accuracy is achieved between the model basic simulations and the experimental results, proving the …

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Decoupling And Partial Iterative Calculation Method Of Flexibility Dynamics, Xianzhong Wang, Minlan Tang, Jinfang Dong Jan 2021

Decoupling And Partial Iterative Calculation Method Of Flexibility Dynamics, Xianzhong Wang, Minlan Tang, Jinfang Dong

Journal of System Simulation

Abstract: Some spacecrafts have large solar panels and a lot of propellant. These spacecrafts with flexible modes can reach hundreds of order. High-powered computers are needed for these spacecrafts,flexibility dynamics iterative operation within several milliseconds. The measures of decoupling flexibility vibration from body rotation and partial iterative calculation were applied to avoid no convergence of the flexibility dynamics iterative operation because of iterative computing error. The parameters of flexible dynamics model which were decoupled could be calculated off-line. The amount of calculation was decreased for the decoupled flexibility dynamics model as parameters could be computed before simulation. The method doesn't …

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Construction Of Real-Time Simulation Model Of Fire Fighting Pump System Of Airport Fire Engine, Lishan Jia, Liwen Wang Jan 2021

Construction Of Real-Time Simulation Model Of Fire Fighting Pump System Of Airport Fire Engine, Lishan Jia, Liwen Wang

Journal of System Simulation

Abstract: To the simulation of fire fighting pump system of airport fire truck in driving training simulator of airport fire engine, the method of construction of simulation model of fire fighting system was promoted. Simulation model of centrifugal pump of airport fire truck was constructed, which was designed for simplification to satisfy the real-time performance of running of system. Considering fire fighting operation of fire truck, simulation model of operation of fire fighting pump system was constructed, which could not only simulate common fire fighting operation of fire truck, but also simulate running status of low pressure of fire fighting …

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Modeling And Simulation Of Detection Probability For Whole Airspace Oriented Optical Target, Hongie Dang, Haozhang Yu, Luofeng Deng, Guanlei Jiang Jan 2021

Modeling And Simulation Of Detection Probability For Whole Airspace Oriented Optical Target, Hongie Dang, Haozhang Yu, Luofeng Deng, Guanlei Jiang

Journal of System Simulation

Abstract: To ensure the target within view field is the precondition of the tracking measuring equipment working normally, which is described by probability in engineering. A precise method of optical equipment detection probability was addressed aiming at the maneuverable targets, an exact description method of the whole airspace detection according to optical sensor was put forward, and a detection probability model for optical target was set up. A calculation method suited the model was confirmed,which was given by simulation analysis of the algorithm's calculation performance, the influence of model various parameters on algorithm was analyzed, and a comparison was given …

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Research On Safety Protection Compositive Simulation Test Bed For Electric Secondary System, Zheniu Zhou, Angang Zheng, Heping Zou Jan 2021

Research On Safety Protection Compositive Simulation Test Bed For Electric Secondary System, Zheniu Zhou, Angang Zheng, Heping Zou

Journal of System Simulation

Abstract: Existing information and network security simulation methodologies of model construction were analyzed and compared with each other, and applicability and limitations of each of them were summarized. Then according to safety protection needs to electric secondary system, based on previous research results of security simulation aiming at individual and partial objects, a safety protection compositive simulation test bed was designed and implemented in which eight kinds of simulation technology and solutions were integrated. This test bed included four simulation layers and seventeen categories of simulation test, and achieved a large scale, distributed, linkage-type simulation for comprehensive information security. This …

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Rendezvous And Docking Digital Simulation System Based On Matlab, An Hao, Zhenshen Qu, Changhong Wang Jan 2021

Rendezvous And Docking Digital Simulation System Based On Matlab, An Hao, Zhenshen Qu, Changhong Wang

Journal of System Simulation

Abstract: On the background of lunar orbit rendezvous and docking (RVD), a framework of the simulation system was designed. The dynamics, navigation and controller of the RVD system were built in detail, and a Simulink model of the lunar orbit RVD was established based on these results. A user interface and a 3D dynamic demonstration were designed to make the operation convenient and intuitive.The digital simulation system can be used to verify the lunar orbit RVD missions incipiently. Furthermore,a semi-physical RVD simulation was taken by using the modified model. The simulation results show the effectiveness of the inertia-visual integrated navigation …

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