Sharing and cooperation in geo-information technology

Aziz, T. Lukman

Bibliographic data

Monograph

Persistent identifier:: 856479470

Author:: Aziz, T. Lukman

Title:: Sharing and cooperation in geo-information technology

Sub title:: ISPRS Commission VI Symposium, April 15 - 17, 1999, Bandung, Indonesia

Scope:: 1 Online-Ressource (130 Seiten)

Year of publication:: 1999

Place of publication:: London

Publisher of the original:: RICS Books

Identifier (digital):: 856479470

Illustration:: Illustrationen, Diagramme

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: SPECIAL SESSION: EARTH MONITORING

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: A DISTRIBUTED REMOTE MONITORING SYSTEM USING SATELLITE AS THE TRANSMITTER. S. Gopinath Rao

Document type:: Monograph

Structure type:: Chapter

International Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 6. Bandung-lndonesia 1999 124 A DISTRIBUTED REMOTE MONITORING SYSTEM USING SATELLITE AS THE TRANSMITTER S. Gopinath Rao Network Research Group School of Computer Sciences, Universiti Sains Malaysia 11800 Penang, Malaysia gopi@network2.cs.usm.my ABSTRACT The communication, computer and consumer electronics industries are coming together rapidly, creating products and services that allow people to establish links and exchange data without using wires. The main such device is Satellite. A communication satellite functions as an overhead wireless repeater station that provides microwave communication link between two geographically remote sites. Still another use of satellite is for observation. One of the main challenging in the network world nowadays is to use it in a certain function such as like tracking oil spills, weather pattern and other disaster warning. However most of this areas, network infrastructure is generally very limited. The topic of the paper is an application related to disaster warning, which are fire, flood warning using satellite as a transmission media. This paper discusses mainly the structure of fully distributed multimedia network architecture to support early disastrous event such as fire, flood and also volcano eruption. Satellite has been the main discussion of this paper because satellite transmission can cover a wide area over the surface of the earth. Using this tool will help us to monitor a larger area. INTRODUCTION APAN(Asia Pacific Advanced Networks) is intended to be a high-performance network for research and development on advanced application and services. This high bandwidth network is necessary to transmit data quickly over 2 or more sites. Real time multimedia applications such as document and video conferencing are becoming more important in today’s high bandwidth network. Many Corporate and Companies nowadays are very eager to use this kind of system. It is mainly because: • Multimedia application is becoming more reliable. • Multimedia application can be easily seen, heard and understood. • To minimize costs. A distributed system need to be implemented that can support this high bandwidth network structure. The focus of this paper is to discuss the design and implementation of a distributed system using satellite as a main transmission media. This distributed system must be very reliable so that it can function well without crashing the system. Message passing is done using IP. Thus IP packets are used to transmit both control and data information to these entities and the output will also be IP formatted packets as well. This distributed system, which is known, as Remote Monitoring System is a Central Multi-point Multimedia streaming system. This paper will show us step by step from theory, design stages and finally the implementation, testing and commissioning thus distributed system. The Remote Monitoring System It is a system where a remote area is monitored from a distance. This system which is also known, as RMS will be added certain extra features. Remote Monitoring System is the idea of a surveillance system used mainly for security purposes, i.e. in banks and in industrial field (production floor). It is a Client-Server concept. The basic idea is a computer, which is connected to a camera, will act as a server. This server will capture images and send it to clients in the sites through the Internet. Here the RMS will function as surveillance system for forest fire. This system would be set up according to diagram 1. A camera would be placed on a vantage point, like a tower on a hill top or high rise buildings and would be attached to a server. The camera will capture images is real time (streaming) and send data to a nearby VSAT or satellite dish. The VSAT is used because it can send data to satellite that covers a larger area. All clients need to establish a connection with the server in order to get the real time images. RMS is a point to multipoint application, which means clients from several different places, can monitor the same remote area. IMPLEMENTATION This system would mainly consists of 4 parts :- a) Server module b) Transmission and Communication Module c) Client and interface module d) Compression and Decompression The server module would be dealing with the interaction of the camera and the computer, prepares a communication channel to establish connection with the clients, send images to the clients and monitor the connection status. Transmission and Communication module mainly deal with the type of communication used to transmit data from server to clients. Images transmitted from the server to nearby VSAT. VSAT then send the images to satellite, which later broadcast it. On the other side, certain VSAT will receive the broadcast message from satellite and send it to clients, which is connected to the server. The setup for this system is as shown in diagram 2. The diagram shows how 3 remote sites are connected to the APAN network using 56K internet. To ensure the system is secured, a TCP/IP connection is made with the server for login and password validation. The images would be send using UDP packets in compressed style. Decompression would take place at the client site. This entire process would be done in real time.

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