SlideServe
Télécharger Obtenir Pro
Menu
Accueil Pro
Préférences
ApparenceLight Aide et commentaires
© SlideServe · v2026

A Web-based Distributed Simulation System

miranda-harvey avatar
miranda-harvey
20 diapositives · 342 Views · Nov 18, 2014

This project presents a Web-based Distributed Simulation System (Web-TFP) aimed at analyzing communications between Defense Support Program (DSP) sites and spacecraft. Built using High-Level Architecture (HLA), it enables users to access simulation capabilities from any browser without needing installation or updates. The system's architecture incorporates Linux or Solaris servers, Apache, PHP/Java, and MATLAB for functionality. Future enhancements will incorporate improved 3D interfaces and migration to HLA-based platforms to increase interoperability and user interaction.

A Web-based Distributed Simulation System - slide 1
01 / 20A Web-based Distributed Simulation System
1 / 17

Télécharger la présentation

A Web-based Distributed Simulation System
Une image / un lien ci-dessous est fourni (tel quel) pour télécharger la présentation

Politique de téléchargement : le contenu du site vous est fourni TEL QUEL pour votre information et votre usage personnel ; il ne peut être vendu, concédé sous licence ni partagé sur d’autres sites sans l’accord de son auteur.Le contenu vous est fourni TEL QUEL, pour votre information et votre usage personnel uniquement. Téléchargez la présentation en cliquant sur ce lien. Lors du téléchargement, si vous ne parvenez pas à télécharger une présentation, l’éditeur a peut-être supprimé le fichier de son serveur.Pendant le téléchargement, si vous ne parvenez pas à obtenir une présentation, le fichier a peut-être été supprimé par l’éditeur.

F I N

Plus de contenu associé

Transcription de la présentation

  1. A Web-based Distributed Simulation System Christopher Taewan Ryu Computer Science Department California State University, Fullerton

  2. Overview Project background HLA A web-based distributed simulation Implementation approach Future work

  3. Project Background • Telecommunication Forecaster Predictor (TFP) • Performs analysis on communications between DSN sites and spacecrafts • Web-TFP (Web version of TFP) • No program installation or upgrade • No data updating and reconfiguration • No license • TFP anywhere and anytime with a browser

  4. Architecture of Web-TFP Linux or Solaris Server Client Apache Matlab Web Browser PHP/ JAVA Matlab CGI or DWR Matlab Server TFP

  5. 5 • Input • Parameters, data files, and program files • Operation • Select a mission  Interface  Run  Receive output

  6. 6

  7. 7

  8. Computer Simulation • Importance of Computer Simulation • For significant cost saving, better control and understanding of given objects and phenomenon • Defense, medical, entertainment, etc. • Important in building many mission-critical systems such as space mission and defense applications--high cost and reliability. • Challenges • Developing a realistic complex simulation system requires tremendous amount of time and effort • Many simulation systems in different organizations (e.g., DoD, NASA have developed various simulation systems in the past). • Interoperability among different systems • Reusability

  9. High Level Architecture (HLA) • First developed by the DoD • To support interoperability and reuse • HLA has been standardized for distributed computer simulations under IEEE Standard 1516. • Any system that conform to the standard can work with any HLA implementation based on the same standard • Several open-source implementations of HLA such as Open HLA (OHLA) and Portico are available (in Java, C++). • Portico fully conform to IEEE Standard 1516.

  10. HLA Framework … • RTI is the fundamental component of HLA • Provides a set of software services that are necessary to support federates to coordinate their operations and data exchange during a runtime execution. • Simulations don’t communicate with each other directly. All communications among simulations are managed by RTI • providing high scalability, interoperability, and reusability of components.

  11. USE Case Diagram for Our Project

  12. GUI (Java Web Start) HLA Simulation Monitor (Java 3D) Web Service Proxy Federate RTI Simulation Controller Federate Architecture • Proxy federate is to support Web service (implementation of SOA) • Web service and HLA provides different levels of interoperability • Scalability and performance

  13. Deployment Environment

  14. Environment Setup • Portico for RTI • Can run on Windows, Linux, or Mac platforms. • Apache Tomcat • Apache Axis • Java 3D • Target simulations, Internet, Browser

  15. Detailed Deployment

  16. Interfaces Simulation objects are be added using the console

  17. Simulation in Operation

  18. Advantages and Disadvantages of Web Services in HLA • Advantages • Substantially larger set of development environment and languages (that can be supported by HLA) • Easier to deploy HLA federates in WAN environment using HTTP protocol (stateless) • Larger scale of interoperability • Can you web browser as interface (all advantages of web browser)—particularly important to our project • Disadvantages • Lower performance than C++ or Java API • May require additional knowledge on Web service and HTTP

  19. Future Work Migrate the Web-TFP or other related systems to the HLA-based platform Provide 3D interfaces for users for better interaction

  20. Thank you.