بســــــــــــــــــم الله الرحمن الرحــــــــــــيم

السلام عليكم

عندي مشروع عن الانترنت عن طريق الاقمار الصناعيه

او ما يسمى بـVSAT

او ما يسمى بـDSL SKY

ارجوا من كل من يعرف شئ عن هذا الموضوع ان لا يبخل على بــه

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تضل يااخي هذه الكتب
The Satellite Communication Applications Handbook

Bruce E. Elbert, «The Satellite Communication Applications Handbook», 2nd EditionArtech House Publishers | ISBN 1580534902 | December 2003 | 554 Pages


Book DescriptionHandbook covers the latest advances in satellite technology and applications. Features new chapters on mobile digital audio radio and VSAT networks. For satellite communications professionals and network architects. Includes index and references. Previous edition: c1997.
ReviewMr. Elbert's book is eminently readable and offers a clear concise explanation of the various uses of satellite. Suitable both for engineers and non technical persons. If you work in telecommunications, you should have this book.

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Satellite Communication 3rd Edition by Dennis Roddy

http://rapidshare.de/files/9737510/S...unications.rar


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VSAT Networks John Wiley & Sons

Book Description
Now fully revised and updated, VSAT Networks continues to cover all of the essential issues involved with the installation and operation of networks of small earth stations called 'Very Small Aperture Terminal'. VSATs are typically one to two meters in antenna reflector diameter and communicate with one another, or with a central earth station called a 'hub', via a relay satellite in space. This informative volume enables the reader to understand how services, economics and regulatory aspects condition the success of such networks. Key features include: configuration and practical applications of VSAT networks radio frequency (RF) link analysis, focusing on basic formulae and the evaluation of the RF link performance protocols used, with emphasis on the necessary adaptation of protocols used in terrestrial networks procedures for the dimensioning of the network according to the type and volume of generated traffic and to the expected quality of service Written by a well-known, highly respected academic, this authoritative volume will appeal to students of telecommunications, electronics and computer science. Practising telecommunications engineers and technical managers involved in the planning, design and operation of networks and service provision will all find this book a valuable reference source. This Second Edition has taken full advantage of the author's experience gained from the success of the first edition. The theoretical background has been expanded and the operational contents have been updated in view of recent developments in the field.

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VSAT NETWORK
Author: G. Maral
Publisher: 1995 John Wily and sons
ISBN: 0 471 953024

VSAT Networks: Second Edition covers all the important issues involved with the installation of VSAT systems. Since the first edition was published, the VSAT market has continued to expand steadily. VSAT technologies have advanced, prompting an increase in the take-up of VSAT services.

Offering a comprehensive introduction to the topic followed by a detailed exploration of multiple access protocols, delay analysis and system dimensioning, this edition is a highly relevant update of VSAT Networks. Written by a well respected and established member of the satellite community, it will be welcomed be academics and engineers alike.

Covers important issues of services, economics and regulatory aspects[*]Provides a detailed technical insight on networking and radio frequency link aspects, therefore addressing the specific features of VSAT networks at the three lower layers of the OSI Reference Layer Model for data communications[*]This timely second edition is fully updated with new figures, improvements and revised chapter on future developments.

This book will appeal to students of telecommunications, electronics and computer science. Practising telecommunications engineers and technical managers involved in the planning, design and operation of VSAT networks and systems will also find this book a valuable reference source




contents:
PREFACE
ACRONYMS AND ABBREVIATIONS
NOTATION
1 INTRODUCTION
1.1 VSAT network definition
1.2 VSAT network configurations
1.3 VSAT network applications and types of traffic
1.3.1 Civilian VSAT networks
1.3.2 Military VSAT networks
1.4 VSAT networks: involved parties
1.5 VSAT network options
1.5.1 Star or mesh?
1.5.2 Data/voice/video
1.5.3 Fixed/demand assignment
1.5.4 C-band or Ku-band?
1.5.5 Hub options
1.6 VSAT network earth stations
1.6.1 VSAT station
1.6.2 Hub station
1.7 Historical background
1.7.1 Origin of VSAT networks
1.7.2 VSAT development in the USA
1.7.3 Users categories in the USA
1.7.4 VSAT development in Europe
1.7.5 VSAT development in other countries
1.7.6 Regional VSAT market share
1.8 Economic aspects
1.9 Regulatory aspects
1.9.1 Standardisation
1.9.2 Licensing of operation
1.9.3 Access to the space segment
1.9.4 Local regulations
1.10.1 Advantages
1.102 Drawbacks
1.10 Conclusions
ix
xiii
xvii
vi Contents
2 USE OF SATELLITES FOR VSAT NETWORKS
2.1 Introduction
2.1.1 The relay function
2.1.2 Transparent and regenerative payload
2.1.3 Coverage
2.1.4 Impact of coverage on satellite relay performance
2.1.5 Frequency reuse
2.2.1 Newton’s universal law of attraction
2.2.2 Orbital parameters
2.3 The geostationary satellite
2.3.1 Orbit parameters
2.3.2 Launching the satellite
2.3.3 Distance to the satellite
2.3.4 Propagation delay
2.3.5 Azimuth and elevation angles
2.3.6 Conjunction of the sun and the satellite
2.3.7 Orbit perturbations
2.3.8 Apparent satellite movement
2.3.9 Orbit corrections
2.3.10 Doppler effect
2.2 Orbit
2.4 Satellites for VSAT services
3 REGULATORY AND OPERATIONAL ASPECTS
3.1 Regulatory aspects
3.1.1 Licensing of operation
3.1.2 Licensing of equipment
3.1.3 Access to the space segment
3.1.4 Permission for installation
3.2 Installation
3.2.1 Hub
3.22 VSAT
3.2.3 Antenna pointing
3.3 The customer’s concerns
3.3.1 Interfaces to end equipment
3.3.2 Independence from vendor
3.3.3 Set-up time
3.3.4 Access to the service
3.3.5 Flexibility
3.3.6 Failure and disaster recovery
3.3.7 Blocking probability
3.3.8 Response time
3.3.10 Availability
3.3.11 Maintenance
3.3.12 Hazards
3.3.13 Cost
3.3.9 Link quality
3.4 VSAT and HUB equipments
3.5 Network management system (W)
3.5.1 Operational functions
3.5.2 Adminishative functions
Contents vii
4 NETWOFXING ASPECTS
4.1 Network functions
4.2 Some definitions
4.2.1 Link and connection
4.2.2 Bit rate
4.2.3 Protocol
4.2.4 Delay
4.2.5 Throughput
4.2.6 Channel efficiency
4.2.7 Channel utilisation
4.3 Traffic characterisation
4.3.1 Traffic forecasts
4.3.2 Traffic measurements
4.3.3 Traffic source modelling
4.4 The OS1 reference model for data communications
4.4.1 The physical layer
4.4.2 The data link layer
4.4.3 The network layer
4.4.4 The transport layer
4.4.5 The upper layers (5 to 7)
4.5 Application to VSAT networks
4.5.1 Physical and protocol configurations of a VSAT network
4.5.2 Protocol conversion (emulation)
4.5.3 Reasons for protocol conversion
4.6 Multiple access
4.6.1 Basic multiple access protocols
4.6.2 Meshed networks
4.6.3 Star shaped networks
4.6.4 Fixed assignment versus demand assignment
4.6.5 Random time division multiple access
4.6.6 Delay analysis
4.6.7 Conclusion
4.7 Network design
4.7.1 Principles
4.7.2 Guidelines for preliminary dimensioning
4.7.3 Example
4.8 Conclusion
5 RADIO FREQUENCY LINK ANALYSIS
5.1 Principles
5.1.1 Thermal noise
5.1.2 Interference noise
5.1.3 Intermodulation noise
5.1.4 Carrier power to noise power spectral density ratio
5.1.5 Total noise
5.2 Uplink analysis
5.2.1 Power flux density at satellite distance
5.2.2 Equivalent isotropic radiated power of the earth station
5.2.3 Uplink path loss
5.2.4 Figure of merit of satellite receiving equipment
5.3 Downlink analysis
5.3.1 Equivalent isotropic radiated power of the satellite
5.3.2 Flux density at earth surface
viii Contents
5.3.3 Downlink path loss
5.3.4 Figure of merit of earth station receiving equipment
5.4 Intermodulation analysis
5.5 Interference analysis
5.5.1 Expressions for camer-to-interference ratio
5.5.2 Types of interference
5.5.3 Self-interference
5.5.4 External interference
5.5.5 Conclusion
5.6 Overall link performance
5.7 Bit error rate determination
5.8 Power versus bandwidth exchange
5.9 Example
6 FUTURE DEVELOPMENTS
6.1 Cost reduction of VSATs
6.2 New services
6.2.1 LAN interconnection
6.2.2 Multimedia
6.2.3 Mobile seMces
6.3 VSATs and onboard processing satellites
6.4 Use of non-geostationary satellite
6.5 Network management
6.6 Conclusion
APPENDIX 1 Traffic source models
APPENDIX 2 Automatic repeat request (ARQ) products
APPENDIX 3 Interface protocols
APPENDIX 4 Antenna parameters
APPENDIX 5 Emitted and received power
APPENDIX 6 Camer amplification
APPENDIX 7 VSAT products
APPENDIX 8 Satellite news gathering

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