Based on Two and Three Dimensional Technology to quickly build a Virtual Battlefield

AbstractVirtual battlefield environment is the use of computer technology, graphics technology and virtual reality technology to the real battle space in the computer. As technology advances and development, virtual battlefield environment system has been applied more and more combat troops and combat command being. Virtual Battlefield Environment Simulation System is a system for the commander to provide a realistic battlefield environment to facilitate their understanding of the terrain, the battlefield awareness information. In this paper, two-dimensional battlefield maps based on MapObject structures and the construction of three-dimensional virtual battlefield environment problem, a second, three-dimensional virtual battlefield environment with the rapid construction techniques. Operational commanders can quickly build a virtual battlefield, not only from the macro real-time battlefield information and to grasp the battlefield situation, but also learned from the battlefield of detailed microscopic details

Development of the Virtual Earth\u27s Magnetosphere System (VEMS)

We have constructed a new research environment for geo-space science based on 3-D visualization tool and network database; Virtual Earth\u27s Magnetosphere System (VEMS). With an interactive research environment researchers can visually understand structures of the Earth\u27s magnetosphere using VEMS. On the VEMS, computer simulation results and observation data are simultaneously visualized, having a potential to data assimilation for geo-space studies in the future. Since the VEMS deals with time-dependent data, it also helps researchers to study dynamics of the Earth\u27s magnetosphere. We found that immersive data analyses are possible using the VEMS on a virtual reality system

Linux OS emulator and an application binary loader for a high performance microarchitecture simulator

Simulation is a critical step in the development of state of the art microprocessors. Accurate simulation allows designers to confidently investigate various designs, while fast simulation times allow designers to thoroughly explore a design space. RITSim is an endeavor to create a high accuracy, high quality microarchitecture simulation infrastructure. This simulation infrastructure will be available for academic research in low power and high performance computer systems. The scope of this work is to provide a Linux OS Emulator, a Binary Application Loader, and a Linux kernel running in a virtual environment for the RITSim project. In order to evaluate standard software loads and benchmark suites on target microarchitectures simulators must provide support for operating system calls. This may be accomplished with various levels of accuracy. Many past simulators chose to sacrifice simulation accuracy to improve simulation time, while others sacrificed portability and execution time for high accuracy results. This work provides three key elements to the RITSim environment in an effort to create a simulation environment that seamlessly combines both approaches to provide a single integrated tool that allows researchers to choose the approach that is best suited to their needs. A first order simulation mode is provided that makes use of emulated system calls that are executed on the host computer?s operating system to provide quick simulation times. This mode also maintains a high level of portability since the host operating system is used to access the hardware. A high accuracy mode is also available that runs in a highly detailed simulated operating system. When running in the high accuracy mode the simulated operating system must be loaded into a virtual environment allowing the actual instructions of the operating system code to be simulated. Another key element is the binary application loader. This is required by the simulator to load executables into the simulator?s virtual memory space and to prepare it for execution. This involves not only mapping or copying the executable into simulated virtual memory, but also the creation and initialization of a new user mode stack and configuration of the simulated processor?s user mode registers

Coupled path and motion planning for a rover-manipulator system

This paper introduces a motion planning strategy aimed at the coordination of a rover and manipulator. The main purpose is to fetch samples of scientific interest that could be placed on difficult locations, requiring to maximize the workspace of the combined system. In order to validate this strategy, a simulation environment has been built, based on the VORTEX Studio platform. A virtual model of the ExoTer rover prototype, owned by the European Space Agency, has been used together with the same robot control software. Finally, we show in this paper the benefits of validating the proposed strategy on simulation, prior to its future use on the real experimental rover.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

Solar System Modeler: A Distributed, Virtual Environment for Space Visualization and GPS Navigation

The Solar System Modeler (SM) extends the Space Modeler developed in 1994. It provides a virtual environment enabling an explorer to dynamically investigate near Earth satellites, deep space probes, planets, moons, and other celestial phenomena. The explorer navigates the virtual environment via mouse selected options from menu panels while wearing a tracked, head mounted display (HMD). Alternatively, a monitor may replace the HMD and keyboard controls replace head tracking. The SM\u27s functionality is extended by the ability to broadcast simulated GPS satellite transmissions in compliance with Distributed Interactive Simulation (DIS) protocol standards. The transmissions include information found in true GPS broadcasts that is required for a receiver to determine its location. The Virtual GPS Receiver (VGPSR) receives the GPS transmissions from the SM and computes the receiver\u27s position with a realistic error based on numerous variables simulating those encountered in the real GPS system. The VGPSR is designed as a plug-in module for simulations requiring virtual navigation. The receiver\u27s client application provides the VGPSR with the simulation time and the true position of the receiver. In return, the application receives a GPS indicated position

Simulation Based Analysis of Kinematics, Dynamics and Control of Space Robots

The space robotics kinematics, dynamics and control were studied by simulation. An emerging concept in space robotics is the Virtual Manipulator (VM) concept. In this study, the VM concept was enhanced and verified through simulation. The mathematical software package MATHEMATICA was used to compute the formulations. In the kinematics simulation of free-floating space robotics systems the concept of VM was enhanced which relates to the homogeneous matrix formulation. This was established by simulation results, there are no external forces condition, the inverse kinematics solution can be solved. In the area of space robot dynamic identification, the method based on conservation law of linear and angular momentum of a space robot from the VM approach was introduced. It was shown that the acceleration of the Virtual Base (VB) was proportionally equal to the change of its position in inertial space from the applied forces or torques. The forces or torques rotates about the system center of mass. A PD control law was used with the simulation test to identify the dynamic parameters. In the problem of trajectory planning, the VM concept was utilized that allow the space robot translation and rotation with respect to an inertial reference frame. A method was developed that can compute the satellite platform moments from the manipulator's motion. The resolved motion rate control algorithm was used for time periodic feedback control. In the simulation results, a satellite-based three degrees of freedom robot was simulated using schematic illustrations. The telerobotic control system was used in the space robotics control. In the masterslave control environment study, several considerations were taken into account, like the master and slave arm configuration, telemonitoring force feedback algorithm, and dynamic characteristics of master and slave arm. In this study a complete and enhanced master-slave space robotics system was established by simulation

The development of the Canadian Mobile Servicing System Kinematic Simulation Facility

Canada will develop a Mobile Servicing System (MSS) as its contribution to the U.S./International Space Station Freedom. Components of the MSS will include a remote manipulator (SSRMS), a Special Purpose Dexterous Manipulator (SPDM), and a mobile base (MRS). In order to support requirements analysis and the evaluation of operational concepts related to the use of the MSS, a graphics based kinematic simulation/human-computer interface facility has been created. The facility consists of the following elements: (1) A two-dimensional graphics editor allowing the rapid development of virtual control stations; (2) Kinematic simulations of the space station remote manipulators (SSRMS and SPDM), and mobile base; and (3) A three-dimensional graphics model of the space station, MSS, orbiter, and payloads. These software elements combined with state of the art computer graphics hardware provide the capability to prototype MSS workstations, evaluate MSS operational capabilities, and investigate the human-computer interface in an interactive simulation environment. The graphics technology involved in the development and use of this facility is described

A walk-through system for building acoustics evaluation based on virtual environment technology

Virtual Reality technology, especially visualization and auralization, provides a useful method to interactively implement the subjective analysis and evaluation of acoustic properties prior to the actual construction of a building. This paper presents a Virtual Environment-based walk-through system for interactive acoustic evaluation of buildings within a CAVE environment. It describes the architecture of the system, the system components, schedule algorithm, synchronous integration of acoustic simulation and visualization. The trade-off algorithm of the real time simplified acoustic space simulation by B-format soundfield representation, non real time detailed acoustic space simulation and the comparison between them are also mentioned. Some cases such as airport, cinema, boardroom, underground station and classroom are studied in the two simulation methods respectively. The potential applications of this system are presented as well