Papers by Keyword: Scene Simulation

Abstract: UAV simulative training system can insure the time and effect of training through reducing training cost. Scene simulation system in this paper is the vital component of the system. The comparability to real equipment is the ultimate request to the simulative training system, as to the scene simulation system, the reality and the veracity of changing rule of scene is most important. Simulation systems existing have deficiencies in these parts. Through studying on these aspects, the system in this paper uses DEM data and airscape to display lifelike vision of real terrain, scene drive model is designed to simulate the influence to the scene from the state changing of the flight and vidicon, real-time interconnection is realized.

Abstract: In this paper, the design scheme, technical route and system structure of the interactive marine incinerator operation training system based on Web3D are proposed based on the study of the marine engine room simulator project. The virtual reality technique, visual C# and IE real-time interaction technology are introduced to the marine incinerator operation training system and the development thoughts of the interactive marine incinerator operation training system based on Web3D are elaborated based on the 3D modeling optimization and real-time interaction technology. This study is a new type of marine engineering training mode, it can better meet the STCW convention in Manila amendments on incinerator equipment management requirements.

Abstract: The primary mission objective is gathering information of the Earth by on-board instruments using remote-sensing techniques, and sending the useful information back to the ground. Its mission design and analysis involves identification of critical requirements, determination of mission orbit, analysis of relationship between satellite, the Earth and the Sun. This paper proposed a new scene simulation system based on distributed architecture, which consisted of mission design subsystem, numerical simulation subsystem, scenario display subsystem and model management subsystem. The system can show the updated mission status and performance rapidly and efficiently after user modified the initial mission parameters. Practice has proven that it can help users to make a decision and judgment for the mission design, and improve their work efficiency.

Abstract: For the buoy being launched in the sea, the cost of great number of experiments is very high. It is difficult to get an overall understanding of the process. Aiming at the problems, the visualization of the entire process was realized. Based on Multigen Creator, the three-dimensional models of submarine, buoy, airbag and sleeves were built. Combined simulation program in Vega Prime, the trajectory of the buoy was simulated. In the process of simulation, the viewing angle of the target could be switched for full range of observations. The interaction between users and the simulation system made the relevant person to conveniently and intuitively observe and assess the status of buoys being operated.

Abstract: Scene simulation technique has been widely used on the field of weapon developing. However, the problems such as technique intricacy and the difficulty of cooperating with work prevent it further developing. So the scene simulation approach to the complex system is put forward based on UML. It can be used to manage effectively the relation of scene simulation models with UML, the organization of models, and the maintenance or the modification of the simulation, to implement till the optimized project. Practical application showed that the approach is available for visualization of numerical calculation, simulation model, simulation interaction, maintenance and modification of scene simulation. It can improve actual operation efficiency considerable.

Abstract: This article describes the overall structure of the watercraft simulator. The simulator simulates the battle positions of a certain type of landing craft equipment operation, using state-of-the-art visual display and stereoscopic projection technology. Communicate with the computer simulation device through the data acquisition card (AM9110), visual 3D modeling software (3D MAX / Studio, MultiGen, etc.) to complete, three-dimensional projection system to the edge of fusion technology, and edge blending processor and projector with used to form the big-resolution three-dimensional visual field. The results show that the 225° annular three-dimensional visual field and visual field 135 ° 360 ° visual field watercrafts realistic driving simulator training and good features.

Abstract: The 6 degree of freedom glide motion equations of the unmanned underwater vehicle (UUV) was built. Than the scene simulation system of AUV was designed based on the Creator and the Vega Prime. The results show that the simulation system simulates well the 6 degree of freedom glide motion of the UUV, and some key technology of the UUV scene simulation system was solved.

Abstract: Considering the characteristics of vision in different luminance levels and the errors of the visual angle restituting, this research obtains a series of simulant scenes and the quantity relations between the luminance of actual scenes and reappearance scenes in the low luminance and weak contrast environment. Finally, carrying the subjective evaluation of these scenes, it obtains the scope of luminance and the quantification relations among these stimulus by statistical analysis. This paper provides theoretical basis for scene simulation and evaluation, and obtain quantitative suggestions for corresponding standards. It has important theory significance and the practical value for landscape lighting planning and design.

Abstract: To replicate the scene of bridge collapse realistically, accurately and completely, this paper proposes a scene simulation method of bridge collapse based Finite Element (FE) analysis. On the basis of suitable scene model of bridge, 3D animation of bridge collapse is implemented by the callback of graphics engine Open Scene Graph (OSG) and special effects of bridge collapse are also created by physics engine physX. In addition, terrain and surroundings are added into the scene simulation. The collapse animation proves to be consistent with FE simulation by comparison and the scene simulation is more realistic and complete due to the special effects and the rich scene. This study provides an important reference for analysis of collapse accidents of bridges.

Abstract: To the analysis and further development of straight-racket-hit skill of table tennis, visual simulation is established to help finding its character through comparing with straight racket backhand skill. To overcome such flaws as unable to exert enough force and difficult to determine a strike point, an optimal angle to achieve the skill is got through analyzing force of different angle of wrist and forearm. Through analyzing the visual simulation of mechanical arm, a systematic theory is established to orient the training of straight-racket-hit skill.