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- Keyword
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- Simulation (131)
- Virtual reality (41)
- Genetic algorithm (40)
- Numerical simulation (40)
- Path planning (39)
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- Modeling and simulation (35)
- Particle swarm optimization (34)
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- Digital twin (27)
- Fault diagnosis (27)
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- Optimization (19)
- System dynamics (19)
- Virtual simulation (19)
- Complex network (17)
- Traffic simulation (17)
- UAV (17)
- Permanent magnet synchronous motor (16)
- Unity3D (16)
- Energy consumption (15)
- Support vector machine (15)
- Collision detection (14)
- Deep reinforcement learning (14)
- Parameter identification (14)
- Publication Year
Articles 1561 - 1590 of 3382
Full-Text Articles in Physical Sciences and Mathematics
Task Allocation Modeling For Agent-Oriented Uuv Collaborative System, Hongtao Liang, Fengju Kang
Task Allocation Modeling For Agent-Oriented Uuv Collaborative System, Hongtao Liang, Fengju Kang
Journal of System Simulation
Abstract: Task allocation modeling plays an important role in UUV collaborative system. In order to solve task allocation problem for the collaborative capability and efficiency, the Extended Contract Net Protocol (ECNP) task allocation approach was creatively proposed, which mainly focused on narrow the scope of communication and improving the negotiation efficiency. In this approach, Regional Trust Degree was introduced to narrow the scope in Announcement stage; and the capacity constraints (Energy-state, Health-State, and Detecting-window) were employed to decide whether to participate in bidding stage; also mixed-weighting evaluation strategy based on Game theory was proposed to evaluate the biding in Awarding …
Color Transfer Based On K-Means Clustering Algorithm And Region Matching, Ziying Zhang, Mingquan Zhou, Wuyang Shui, Zhongke Wu, Zheng Xia
Color Transfer Based On K-Means Clustering Algorithm And Region Matching, Ziying Zhang, Mingquan Zhou, Wuyang Shui, Zhongke Wu, Zheng Xia
Journal of System Simulation
Abstract: For color transfer between colorful images, we used K-means clustering to classify image pixels and we also proposed nearest region matching algorithm. This algorithm can avoid the problem that multiple regions matched to the same region, and it can get the best match results between the two images. Translate the color space from RGB to for the two images. Divide color image and luminance mapped shape image using K-means models into the same number of classes. Determine the relationship between regions of the two images using Euclidean distance and the nearest region matching algorithm. Complete color transfer from color …
Motion Tracking System By Direct Fusion Of Rgb-D Camera And Micro-Imu Sensors, Zhang Yang, Xu Lin, Guangyi Sun
Motion Tracking System By Direct Fusion Of Rgb-D Camera And Micro-Imu Sensors, Zhang Yang, Xu Lin, Guangyi Sun
Journal of System Simulation
Abstract: Recently, low cost full Body Motion Tracking attracted tremendous attentions in the fields of Computer Vision and Automation. Single depth camera-and inertial-based motion tracking systems rapidly have become two primary options for small-business and individual consuming markets, due to their relatively inexpensive price and comparable performance. However, both depth camera-and inertial-based motion tracking systems have inherent disadvantages which cannot be eliminated theoretically and experimentally. For example, depth camera tracking mostly failed in the presence of occlusion while inertial sensor tracking usually suffered from drift errors. Therefore, a novel multiple-sensor fusion approach which seamlessly combined the data measured from a …
Iekf-Swcs Method For Pedestrian Self-Navigation And Location, Zhe Gao, Li Qing, Li Chao, Liu Ning
Iekf-Swcs Method For Pedestrian Self-Navigation And Location, Zhe Gao, Li Qing, Li Chao, Liu Ning
Journal of System Simulation
Abstract: In the process of using wearable inertial measurement unit to realize pedestrian navigation, accumulated drift errors are increasing with pedestrian moving, which has serious effects on the navigation accuracy. To solve this problem, a pedestrian self-navigation and location method was proposed based on improved extended kalman filter (IEKF). An 18 dimensional filter model fused with human motion characteristics was built. Meanwhile, a step wise closed loop smoothing (SWCS) algorithm was designed in IEKF, which could eliminate the sharp correction at some sample points and improve the smoothness of the trajectory. A self-developed IMU sensor was used to make …
Texture Classification Based On Multi-Scale Wavelet, Liao Ning, Lisha Xu, Xiaoshan Qian
Texture Classification Based On Multi-Scale Wavelet, Liao Ning, Lisha Xu, Xiaoshan Qian
Journal of System Simulation
Abstract: Texture analysis is quite sensitive to rotations. An efficient approach, called Invariant Contourlet-Fourier Descriptor, was proposed to achieve rotation invariance in texture analysis by extracting a set of Shannon entropy in contourlet domain. Discrete Fourier Transform analysis was applied to entropy vectors of each scale to form rotation invariant feature vectors, the dimensionality of which was reduced further due to the symmetry of DFT magnitude spectrum. Two classifiers, including the well-known Euclidean distance and Support Vector Machine, were studied to measure the distance between the known and unknown features. Experimental results on 1500 texture images show that …
Semi-Physical Simulation System Research For Marine Fuel Oil Purifier, Zhang Ning, Zhipeng Shen, Jizhong Liu, Haiwei Wang
Semi-Physical Simulation System Research For Marine Fuel Oil Purifier, Zhang Ning, Zhipeng Shen, Jizhong Liu, Haiwei Wang
Journal of System Simulation
Abstract: Practical training in ship fuel oil purifier systems have lots of limitations including poor stability, development difficulties and high maintenance cost. A semi-physical simulation system for marine fuel oil purifier was proposed. According to the real ship control box, a fuel oil purifier control box was designed. A process simulation system was developed to simulate the fuel oil tube and purifier function, which could achieve the working process of purifier system and the phenomenon of fault alarm. The simulation system can reappear the working process of the oil purifier and simulate the fault conditions to improve the …
Research And Application Of Multidisciplinary Optimization Technology Based On Virtual Prototyping, Tao Luan, Junhua Zhou, Baocun Hou
Research And Application Of Multidisciplinary Optimization Technology Based On Virtual Prototyping, Tao Luan, Junhua Zhou, Baocun Hou
Journal of System Simulation
Abstract: The main body of the article briefed the total frame, composing, application case of multidisciplinary optimization technology for weapon equipment system,and introduced 5 kinds of multidisciplinary optimization method detailedly. It took a certain equipment's virtual prototyping optimization design requirement in the engineering develop phase as the background, and advanced the way of multidisciplinary virtual prototyping optimization based on local subsystem analysis viably, shortened form LSA-IDF. Then through an actual case application, the article constructed the weapon equipment system's virtual prototyping optimization design flow, actualized intelligent optimization design based on virtual prototyping. Finally it sums up the applying …
Algorithm Of Double Level Visual Modeling Based On Data Of Pesticide Residues, Ruijun Liu, Chen Yi, Xu Yang
Algorithm Of Double Level Visual Modeling Based On Data Of Pesticide Residues, Ruijun Liu, Chen Yi, Xu Yang
Journal of System Simulation
Abstract: Based on the study of pesticide residues detection result data, which has the characteristics of geographical level and the level of classification of fruits and vegetables, in node links and radial loop algorithm visualization model, the double level structure, radiation chain graph CircleLink, was designed for analysis of pesticide residues data in visual modeling algorithm. The visual modeling algorithm was applied to the actual pesticide residues detection results data for the simulation analysis and conclusions. Analysis of the characteristics of pesticide collection, distribution of agricultural products and supermarket pesticide residues of pesticide residues was applied.
Automatic Registration Method Based On Curvature, Wenli Yu, Mingquan Zhou, Wuyang Shui, Zhongke Wu
Automatic Registration Method Based On Curvature, Wenli Yu, Mingquan Zhou, Wuyang Shui, Zhongke Wu
Journal of System Simulation
Abstract: Due to the acquisition range constriction of three-dimensional, a scanner could only obtain a single perspective of the deep image achieving the 3-D modeling from researching the registration of deep image. Currently, most of the existing commercial software requires manual label to achieve the registration of deep image. In order to improve this problem, an automatic registration method based on the constriction of curvature was proposed. At the beginning of registration, the method 4-Points Congruent Sets for Robust Surface Registration (4PCS) was used to achieve the initial and automatic registration. In the phase of accurate registration, ICP and linear …
Discontinuous Hierarchical Data Visualization Method Based On Themeriver Model, Yuangang Zhen, Chen Yi, Liu Ying, Ruijun Liu
Discontinuous Hierarchical Data Visualization Method Based On Themeriver Model, Yuangang Zhen, Chen Yi, Liu Ying, Ruijun Liu
Journal of System Simulation
Abstract: For traditional ThemeRiver model which has poor performance support to characteristics of discrete data, a kind of visualization method based on improved ThemeRiver model was put forward, which was applied to discontinuous data. All data was put into several time slots and was counted respectively, and new data was added in the time slot which lack data. Gaussian model was adopted to fit curve. After ordering layout, selecting themes' color and arranging the labels, a layout was proposed which has prediction function and can show the hierarchical characteristic. For the hierarchy, the same color family was used to …
Salient Region Detection Based On Object-Biased Gaussian Refinement And Global Contrast, Cai Qiang, Ziyu Xue, Dianhui Mao, Haisheng Li
Salient Region Detection Based On Object-Biased Gaussian Refinement And Global Contrast, Cai Qiang, Ziyu Xue, Dianhui Mao, Haisheng Li
Journal of System Simulation
Abstract: In view of the disadvantages such as the incomplete detection in image boundary which is caused by the global contrast significance detection algorithm, a visual saliency detection algorithm was proposed named salient region detection based on object-biased Gaussian refinement and global contrast. After segmentation based on graph, the global contrast was used to calculate the saliency value of each segmentation blocks. According to the location of the salient object, the center of the Gaussian model was adjusted. Both saliency detection value and Gaussian model combined effect of the final saliency values. The method paid attention to the …
Evaluation Method Of Dimensional Visual Effects Based On Improved Grey Clustering, Yanyang Zeng, Panpan Jia
Evaluation Method Of Dimensional Visual Effects Based On Improved Grey Clustering, Yanyang Zeng, Panpan Jia
Journal of System Simulation
Abstract: Currently, the assessment of the three-dimensional visual effects is concentrated on the assessment methods, while ignoring the role of the index system. Therefore, an index system about fidelity evaluation of the visual simulation was proposed, including the various steps of the construction of the entire visual simulation system. The steps are from three-dimensional modeling to the output of simulation screen. On this basis, the evaluation method of dimensional visual effects was proposed based on improved grey clustering, and it is the combination of subjective and objective. The fuzzy evaluation was used to improve the method of determining the weights, …
3d Reconstruction Of Weak Texture Image Based On Tensor Voting And Dense Map Method, Mingwei Chen, Yang Yang
3d Reconstruction Of Weak Texture Image Based On Tensor Voting And Dense Map Method, Mingwei Chen, Yang Yang
Journal of System Simulation
Abstract: Image based 3D reconstruction method can't effectively detect and match feature points and can't robustly expand 3D point cloud in weak texture image region, due to the fact that weak texture has single color and local reflection phenomenon. It is possible to produce model hole and a large number of 3D noise points, and affect the accuracy and integrity of 3D reconstruction. Slack variables constraint was used to filter mismatch features optimizing the camera matrix, in the dense point cloud expansion stage by using tensor voting principle to filter noise 3d point which is inconsistent with three-dimensional point's normal …
Advances In Research And Application Of In-Situ Visualization, Wang Fang, Sikun Li, Zhao Dan, Zeng Liang
Advances In Research And Application Of In-Situ Visualization, Wang Fang, Sikun Li, Zhao Dan, Zeng Liang
Journal of System Simulation
Abstract: Scientific-Visualization is the most effective means of analyzing numerical simulation data. With the continuous improvement of the high performance computing technology, numerical simulation scale is growing rapidly. It is very difficult to analyze large scale parallel numerical simulation data efficiently due to the limits of IO bandwidth, storage system capacity and post processing pattern of visualization. In-situ visualization utilized the same computer system that ran the simulation tasks to operate visual computing and rendering, so it could overcome the limits of IO and storage system. The advances of in-situ visualization in recent years were reviewed, including data management, large-scale …
Simulation Study On Damage Localization Of Large Generator Stator Insulation Based On Guided Waves, Li Hao, Ruihua Li, Hu Bo, Pan Ling, Qiyi Guo
Simulation Study On Damage Localization Of Large Generator Stator Insulation Based On Guided Waves, Li Hao, Ruihua Li, Hu Bo, Pan Ling, Qiyi Guo
Journal of System Simulation
Abstract: A stator insulation damage localization method based on guided waves was proposed. The dispersive curve was obtained by solving the Rayleigh-Lamb equations. Finite structure models of four typical groundwall insulation damage, i.e. void, delamination, longitudinal and transverse crack were established by FEM software Abaqus, in which the excitation, acquisition and propagation properties of guided wave were numerical simulated. Based on that, wavelet scalogram was used to extract the flight time of damage-scattered wave to obtain the insulation damage location. Analysis was conducted to compare the location precision under each wave modes. Simulation results indicate that the method is …
Simulation And Evaluation On Handling Stability Of Wheeled Self-Propelled Gun Based On Virtual Prototype, Huibin Hu, Shuxiao Chen, Linlin Li, Liqiao Liu, Lijun Cao
Simulation And Evaluation On Handling Stability Of Wheeled Self-Propelled Gun Based On Virtual Prototype, Huibin Hu, Shuxiao Chen, Linlin Li, Liqiao Liu, Lijun Cao
Journal of System Simulation
Abstract: Based on the summary of usual handling stability research methods, a new kind of simulation and evaluation technology for wheeled Self-Propelled Gun based on virtual prototype and actual equipment test was put forward. In MSC.ADAMS/Car environment, virtual prototypes of suspension, tire, steering, engine, transmission subsystems and wheeled Self-Propelled gun were established. Actual equipment test and simulation based on virtual prototype of invariable radius turning test were carried out. The creditability and accuracy of virtual prototype were verified by comparing the simulation results and the test data. Steady turning characteristics were taken as example to illustrate the handling stability …
Adjacent Bit Xor Operation Based Test Data Compression Method, Yifei Cheng, Wenfa Zhan
Adjacent Bit Xor Operation Based Test Data Compression Method, Yifei Cheng, Wenfa Zhan
Journal of System Simulation
Abstract: Data compression is a very effective method to reduce the test cost. An adjacent bit XOR operation based test data compression method was proposed based on bitwise XOR operation between itself and its previous bit, which turned continuous series, such as a series of all 0s and all 1s into series of all 0s, and reversal series, such as a series of 01 and 10 into series of all 1s by bitwise XOR operation between adjacent bits. On one hand, the two kinds of series, continuous series and reversal series, were both taken into account, which decreased the number …
Motion Planning Algorithm Based On Overall Trajectory For Locomotion Of 6-Legged Robot, Zuhua Guo, Shenjiang Wang, Shijie Zhao
Motion Planning Algorithm Based On Overall Trajectory For Locomotion Of 6-Legged Robot, Zuhua Guo, Shenjiang Wang, Shijie Zhao
Journal of System Simulation
Abstract: A traditional motion planning method based on gaits is difficult to adopt to complicate nature terrain. In order to solve the problem, a planning algorithm based on overall trajectory was proposed. The basic unit of robot maneuver was a walking step. The proposed method was to estimate position of robot in the next moment along a given overall trajectory, and then to plan the joints’ trajectory of robot. In this algorithm, the motion of a single step was decomposed into two parts, the motion of moving robot body with support of legs and the motion of swinging legs forward, …
Research On Network Emulation Method Based On Shared Library Integration, Mingqing Zhang, Leigang Sun, Hongshan Kong, Xianqing Qi
Research On Network Emulation Method Based On Shared Library Integration, Mingqing Zhang, Leigang Sun, Hongshan Kong, Xianqing Qi
Journal of System Simulation
Abstract: For the high-risk, high-cost to test equipments in real network and the poor accuracy of software simulation, network emulation method was introduced; the integration between real application and simulation system is the key technology. According to the mapping principle between real device and virtual network, a network emulation model framework was proposed; the OMNeT++ simulator on the source code lever was designed; the network emulation method based on shared library integration was proposed; the problems of thread error, time distortion and symbolic space in the process of integration were discussed, and corresponding solutions were given; the correctness …
Probability Hypothesis Density Filter Based On Adaptive Target Birth Intensity, Jingjing Wu, Lihua You, Wang Yao, Shujuan Song
Probability Hypothesis Density Filter Based On Adaptive Target Birth Intensity, Jingjing Wu, Lihua You, Wang Yao, Shujuan Song
Journal of System Simulation
Abstract: For probability hypothesis density (PHD) filter, that was not able to track birth targets of unknown position, PHD filter with adaptive target birth intensity was proposed. The track initiation algorithm was employed to detect positions of promising birth targets which were used to form the intensity function of birth targets, and an online estimation algorithm of spontaneous birth intensity was proposed. Adaptive target birth intensity was combined with the recursion of the PHD filter, and a solution to the PHD filter based on adaptive target birth intensity for linear Gaussian target dynamics was proposed. Simulation results demonstrate that …
Application Of Wavelet Packet Improved Reconstruction Algorithm To Energy Measurement Of Non-Linear Loads, Hualong Cai, Kun Xiao
Application Of Wavelet Packet Improved Reconstruction Algorithm To Energy Measurement Of Non-Linear Loads, Hualong Cai, Kun Xiao
Journal of System Simulation
Abstract: In order to realize high-accuracy measurement of nonlinear loads, an improved algorithm of harmonic energy measurement based on discrete wavelet packet decomposition and reconstruction was proposed. Frequency band and the corresponding number of decomposition layer were given according to the sampling number, window width and sampling frequency. To improve the non-ideal cut-off characteristic of wavelet filter and eliminate the frequency aliasing, the discrete Fourier and the inverse transformation were used to remove the extra frequency components. The calculation expression of harmonic power and the principle of harmonic energy measurement were listed. The simulation analysis of harmonic energy measurement …
Research On Simulation Method Of Unconformity Surface In Rock Mass Based On Pfc3d, Teijun Cui, Yundong Ma, Laigui Wang
Research On Simulation Method Of Unconformity Surface In Rock Mass Based On Pfc3d, Teijun Cui, Yundong Ma, Laigui Wang
Journal of System Simulation
Abstract: In order to accurately simulate the rock mass, considering the effects of the unconformity to simulation, the method was purposed to simulate the different contact situation using PFC3D based on the Particle flow theory, include: integration, parallel unconformity, angular unconformity. Simulation step include: define the rock coordinate system; determine the key points of contact trend; use MATLAB to fit the trend curve and get the parameters; use PFM to construct the model; shaping contact surface using FISH according the parameters. The structured model satisfies the above requirements, which proved the model is close to the actual rock mass mechanics …
Modeling Method Of Airborne Display And Control System Based On Meta-Model Features, Zhile Wang, Jungan Wei, Yu Hui
Modeling Method Of Airborne Display And Control System Based On Meta-Model Features, Zhile Wang, Jungan Wei, Yu Hui
Journal of System Simulation
Abstract: Analysed of the current integrated avionics display and control system simulation problems, discussed the system’s function, composition and the simulation design method detailedly. Proposed a reconfigurable modeling method of meta-model features according to the requirements of the simulator develop. Make full used of the feature extraction method meta-model theory, the various elements that make up the system and their relationship was classified and feature abstract and description reasonably, built the meta-model of display and control system. Created the display and control system’s graphic elements, characters and Human-computer interactive interface by GL Studio. Using object-oriented techniques to make reusable class …
A Class Of Prediction Based Adaptive Pid Controller, Yanjun Liu, Yawen Mao
A Class Of Prediction Based Adaptive Pid Controller, Yanjun Liu, Yawen Mao
Journal of System Simulation
Abstract: The PID controller has been widely used in various industrial processes. However, for real practical control plants, their mechanisms, structures and operation conditions are different, and conventional tuning methods cannot always work in a desirable state. In order to improve the robustness and the stability of the control systems, advanced PID control algorithms have been attracted much attention. A prediction based adaptive control algorithm is proposed for CARIMA models, where the PID parameters can be tuned adaptively according to the parameters of the control plant. The key is minimizing a performance index which considers the quadratic predicted output, over …
Simulation And Test Of Mold Transport Mechanism Of Multi Mold Cycle Production Line, Yanjun Xiao, Liu Rui, Haiping Song, Jing Ran, Lihu He
Simulation And Test Of Mold Transport Mechanism Of Multi Mold Cycle Production Line, Yanjun Xiao, Liu Rui, Haiping Song, Jing Ran, Lihu He
Journal of System Simulation
Abstract: A new mold transport mechanism was put forward. In order to verify its strength and stability, a three-dimensional model of the institution was established making structural static analysis. The model was simplified according to the results of static analysis and the critical load of the mould delivery mechanism was calculated. Then the buckling analysis of the simplified model and the original model was conducted. According to the simulation analysis of the total deformation nephogram, the stress nephogram, critical load and buckling mode, the strength and stability of the mold transport mechanism were verified. The stress concentration area and the …
Radar Countermeasures Simulation Factor Analysis Method Of Fidelity-Oriented, Guoliang Wang, Huanyao Dai, Xujian Shen, Zhou Bo
Radar Countermeasures Simulation Factor Analysis Method Of Fidelity-Oriented, Guoliang Wang, Huanyao Dai, Xujian Shen, Zhou Bo
Journal of System Simulation
Abstract: It is crucial to assess the fidelity of operational objectives simulation and complex electromagnetic environment building for designing a military simulation system. Traditional confidence, credibility, similarity are difficult to fully evaluate the entire system, and hard to focus. To solve the problem of fidelity analysis and evaluation of operational objectives and battlefield simulation environment building, the concept and content of simulation fidelity were analyzed to explore the factor analysis principle and hierarchical classification method, etc., taking radar group network confrontation as an example, and its level division structure was given. General principles and methods of radar countermeasure high-fidelity simulation …
Model Granularity Control Oriented Multi-Resolution Modeling, Huachao Mao, Gongzhuang Peng, Heming Zhang, Jiaxin Zhao, Minghui Li
Model Granularity Control Oriented Multi-Resolution Modeling, Huachao Mao, Gongzhuang Peng, Heming Zhang, Jiaxin Zhao, Minghui Li
Journal of System Simulation
Abstract: Multi-resolution modeling and simulation has been widely applied in various fields, but the current multi-resolution modeling and simulation methods cannot effectively, systematically and comprehensively address four key issues: resolution control, model consistency, information loss and cross resolution interaction. Addressing these four issues, Model Granularity Control Oriented Multi-Resolution Modeling was proposed. This modeling approach has two core modeling components: resolution state chart and resolution connecting bridge, the former is to use UML state diagram to control granularity changes triggered by cross-resolution interaction, human-computer interaction and resource optimization model, and the latter is to model the relationship between different resolution …
Communication Model Modeling Method In Warfare Modeling And Simulation, Yuanfeng Li, Jianping Liu, Chengying Shi
Communication Model Modeling Method In Warfare Modeling And Simulation, Yuanfeng Li, Jianping Liu, Chengying Shi
Journal of System Simulation
Abstract: The limitation of the traditional communication model modeling methods was analyzed. On the basis of detailed analysis the requirements of communication modeling and simulation, the method of communication model modeling method was designed based on the communication effects. It shows how to represent communication asset and combines the input and output of the model with the simulation verification scenario to illustrate the validity and applicability of the communication model. This method can effectively solve the impact analysis of communication problem for operational effectiveness, saves development costs and supplies the reference method of C4ISR model in warfare modeling …
Comparison Of Microscopic On-Road Fuel Consumption Model Based On Vsp And Ln (Tad), Zhao Qi, Yu Lei, Guohua Song
Comparison Of Microscopic On-Road Fuel Consumption Model Based On Vsp And Ln (Tad), Zhao Qi, Yu Lei, Guohua Song
Journal of System Simulation
Abstract: In microscopic on-road fuel consumption models, the power demand-based parameter was commonly used to characterize the vehicle activities because of its strong correlation with fuel consumption. Both VSP and the natural logarithm of Ln(TAD) were commonly used power demand-based parameters. It is necessary to compare the accuracy and characteristic of two fuel consumption models that are developed based on the VSP with Ln(TAD). By collecting and processing field vehicle activities and fuel consumption data, two fuel consumption models for LDVs, one based on the VSP and another one based on Ln(TAD) were developed. Then, the distribution model between …
Spherical Qtm-Based Submerged Simulation System Of Sea Level Rise, Huaqiao Xing, Miaole Hou, Wang Lei, Xiaoyi Jiang
Spherical Qtm-Based Submerged Simulation System Of Sea Level Rise, Huaqiao Xing, Miaole Hou, Wang Lei, Xiaoyi Jiang
Journal of System Simulation
Abstract: Focused on the dynamic simulation of submerged area after the rise of sea level, key technical issues were discussed, such as data organization and scheduling in large-scale 3D scene, submerged area dynamic simulation based on the adjacent relations of QTM (Quaternary Triangular Mesh) grids. A submerged simulation system based on QTM was designed and developed using Visual C#3.0 programing language and Microsoft DirectX 9 graphic interface, and the overall structure and main function of the system were introduced in detail. Tianjin Binhai New Area was selected as study area for submerged area dynamic simulation under different sea levels …