A DDS-Based Interoperation Framework of Large-Scale Simulation System

2013 ◽  
Vol 462-463 ◽  
pp. 746-749
Author(s):  
Ru Kui An ◽  
Chang Feng Xing ◽  
Ling Wu ◽  
Li Gong
Keyword(s):  
Real Time ◽  
Time Management ◽  
Large Scale ◽  
Simulation System ◽  
Prototype System ◽  
Integration Framework ◽  
Management Ability ◽  
Communication Module ◽  
Communication Ability ◽  
Data Distribution Service

To integrating of combat simulation system in existence, the barrier of differences of runtime framework, connection protocols and integration framework among the simulation systems must be solved. HLA bridge is necessary when the different RTI implements, which decline the system performance. The Data Distribution Service (DDS), which is implemented with P/S mode, with the advantage of low coupled, strong scalability real-time and huge amount, seems an ideal solution to the problem. An integration framework based on DDS is approached, which inherits the real-time communication ability of DDS and the time-management and federation management ability of HLA, the prototype system proved the ability of the framework, and the semantics communication module of the system would be the next research topic.

The Research into the Visual and Simulated System of the Orbiting Satellite

2013 ◽  
Vol 753-755 ◽  
pp. 1324-1327
Author(s):  
Jia Qiang Dong
Keyword(s):  
Real Time ◽  
Time Management ◽  
Simulation System ◽  
Earth Model ◽  
Virtual Training ◽  
The Real ◽  
Whole Process ◽  
Network Training ◽  
The Earth ◽  
Simulated System

The visual and simulated system of the orbiting satellite based on the OpenGL technology is designed and realized in this paper, in which a visualization platform of the satellite in-orbit running is constructed. The simulation system has constructed the satellite model and the earth model by making use of 3DS MAX technology, and achieved the visualization of satellite in-orbit-running, the visualization of the communication route and of the overlay effect. At the same time, which has realized the access to the database of the orbiting satellite by means of ADO technology .The practices have proven that the system can simulate the whole process of satellite in-orbit-running in real-time, and provides the assistant support platform of the real-time management and decision. Apart from this, the system provides the network training of the space forces with virtual training platform. It is of great significance to construct the virtual battlefield simulation system.

scholarly journals AVL and Monitoring for Massive Traffic Control System over DDS

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Basem Almadani ◽  
Shehryar Khan ◽  
Muhammad Naseer Bajwa ◽  
Tarek R. Sheltami ◽  
Elhadi Shakshuki
Keyword(s):  
Real Time ◽  
Traffic Control ◽  
Large Scale ◽  
Huge Number ◽  
Management Group ◽  
Communication Paradigm ◽  
Time Requirements ◽  
Traffic Control System ◽  
Data Distribution Service ◽  
The City

This paper proposes a real-time Automatic Vehicle Location (AVL) and monitoring system for traffic control of pilgrims coming towards the city of Makkah in Saudi Arabia based on Data Distribution Service (DDS) specified by the Object Management Group (OMG). DDS based middleware employs Real-Time Publish/Subscribe (RTPS) protocol that implements many-to-many communication paradigm suitable in massive traffic control applications. Using this middleware approach, we are able to locate and track huge number of mobile vehicles and identify all passengers in real-time who are coming to perform annual Hajj. For validation of our proposed framework, various performance matrices are examined over WLAN using DDS. Results show that DDS based middleware can meet real-time requirements in large-scale AVL environment.

Project Smart Remote Classroom Providing Novel Real-Time Interactive Distance Learning Technologies

2011 ◽  
pp. 2017-2025
Author(s):  
Yuanchun Shi ◽  
Weikai Xie ◽  
Guangyou Xu ◽  
Peifeng Xiang ◽  
Baopeng Zhang
Keyword(s):  
Distance Learning ◽  
Real Time ◽  
Large Scale ◽  
Virtual Classroom ◽  
Transport Layer ◽  
Prototype System ◽  
Teachers And Students ◽  
Project Smart ◽  
Distance Learning Technologies ◽  
Adaptive Content Delivery

Real-time interactive virtual classrooms play an important role in distance learning. However currently available systems are insufficient in supporting large-scale user access, and they cannot efficiently support accessing with heterogeneous devices and networks. Furthermore, these systems are usually desktop-based, until the result that the teacher’s experience is completely different from teaching in a real physical classroom. This paper discusses the Smart Remote Classroom project that deals with these difficulties using the following novel technologies: 1) A hybrid transport layer multicast protocol called TORM and an adaptive content delivery scheme called AMTM, which work together to enable large-scale users to access a virtual classroom with different devices and networks synchronously. 2) A dedicated software called SameView, which takes use of the proposed TORM and AMTM technology, and provides a rich set of functions for teachers and students to efficiently carry out the real-time interactive tele-education. 3) The Classroom augmented by Smart Space technology called Smart Classroom where the user interfaces of the SameView are incorporated in the classroom space. Thus the teacher can instruct the remote students just like teaching face to face in a conventional classroom. All these technologies have been successfully integrated and demonstrated in the prototype system at Tsinghua University.

A Novel Real-Time Interactive LBS System for Large-Scale Smart Parks

2010 ◽  
Vol 171-172 ◽  
pp. 32-35
Author(s):  
Zhi Han Liu ◽  
Hou Cong Zhu ◽  
Fang Chun Yang
Keyword(s):  
Real Time ◽  
Large Scale ◽  
Prototype System ◽  
Service Center ◽  
Mobile Client

The paper introduces a novel real-time interactive LBS system, which can be applied to large-scale smart parks such as tourist resorts, Expos and campuses. Compared with the existing systems, some new functions in the proposed system are introduced. The system is composed of Service Center and mobile client. The Service Center provides services such as routine planning, congestion avoiding, announcements publishing and so on. The mobile client is capable to send various kinds of pre-defined requests to the Service Center and concurrently process real-time responses. The prototype system is illustrated to prove the usability and practicability.

scholarly journals DESIGN AND IMPLEMENTATION OF TRAJECTORY DATA MANAGEMENT AND ANALYSIS TECHNOLOGY FRAMEWORK BASED ON SPATIOTEMPORAL GRID MODEL

2020 ◽  
Vol XLIII-B4-2020 ◽  
pp. 471-476
Author(s):  
J. Li ◽  
J. Q. Liu ◽  
X. L. Mei ◽  
W. T. Sun ◽  
Q. Huang ◽  
...  
Keyword(s):  
Data Management ◽  
Real Time ◽  
High Performance ◽  
Large Scale ◽  
Integrated Management ◽  
Prototype System ◽  
Trajectory Data ◽  
Complexity Of Algorithms ◽  
Grid Model ◽  
Trajectory Mining

Abstract. The trajectory data generated by various position-aware devices is widely used in various fields of society, but its conventional vector representation and various analysis algorithms based on it have high computational complexity. This makes it difficult to meet the application requirements of real-time or near real-time management and analysis of large-scale trajectory data. In view of the above challenges, this paper proposes a trajectory data management and analysis technology framework based on the Spatiotemporal Grid Model (STGM). First, the trajectory data is represented by spatiotemporal grid encoding instead of vector coordinates, and it can achieve dimensionality reduction and integrated management of high-dimensional heterogeneous trajectory data. Second, the trajectory computing and analysis methods based on STGM are introduced, which reduce the computing complexity of algorithms. Furthermore, various types of trajectory mining and applications are realized on the basis of high-performance computing technologies. Finally, a trajectory data management and analysis prototype system based on the STGM is developed, and experimental results verify the reliability and effectiveness of the proposed technology framework.

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