Communications Satellites

Communications Satellites

The Technology of Space Communications

1st Edition - May 18, 1987

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  • Author: Larry Blonstein
  • eBook ISBN: 9781483140704

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Description

Communications Satellites: The Technology of Space Communications focuses on the technologies and approaches employed in communications satellites. The book first tackles geosynchronous orbit, low orbit to geosynchronous altitude, disturbances in orbit, and turning a crate into a satellite. Topics include thermal and electrical power, station-keeping, and 'pointing'. The publication then ponders on on-board communications equipment, logarithms and decibels, and radio frequencies and wavelengths and their allocations. Discussions focus on fixed, broadcast, and mobile services, complete satellite, transponders, and antennas. The manuscript examines earth stations, traffic capacity and quality, selecting a satellite, and economic system optimization. Compression and modulation techniques, echo and delay, encryption, space loss, estimation of traffic capacity and quality, and up-link transmission are discussed. The text then elaborates on the economics of satellite communications and operational systems. The publication is valuable reference for readers interested in the technologies and approaches involved in communications satellites.

Table of Contents


  • Preface

    List of Photographs

    Acknowledgments

    Introduction

    1 Getting a Crate into Orbit

    2 The Geosynchronous Orbit

    3 From Low Orbit to Geosynchronous Altitude

    4 Disturbances in Orbit

    5 Turning a Crate into a Satellite

    Station-Keeping

    Pointing

    Electrical Power

    Thermal Control

    Nearly a Working Satellite

    6 On-Board Communications Equipment

    Transponders

    Antennas

    The Complete Satellite

    7 Logarithms and Decibels

    8 Radio Frequencies and Wavelengths, and their Allocations

    9 Coverage, Gain and EIRP

    10 Earth Stations

    Types, Construction and Sizes

    Performance

    Up-Link Transmission

    Pointing an Earth Station

    11 Traffic Capacity and Quality

    Quality

    EIRP and G/T

    Space Loss

    Boltzmann’s Constant

    Capacity

    Other Losses

    Estimating Traffic Capacity and Quality

    Worked Examples

    12 Selecting a Satellite

    13 Economic System Optimization

    Access Methods

    Modulation Techniques

    Compression Techniques

    Encryption

    Echo and Delay

    14 Encryption

    One-Way Functions

    Modulo Arithmetic

    Example of Encryption and Decryption

    Scrambling

    15 Operational Systems

    16 The Economics of Satellite Communications

    Satellite Prices

    System Prices

    System Income and Profit

    User Profit

    17 Future Trends

    Further Reading

    Appendix Manufacturers and Owners

    Index

Product details

  • No. of pages: 176
  • Language: English
  • Copyright: © Butterworth-Heinemann 1987
  • Published: May 18, 1987
  • Imprint: Butterworth-Heinemann
  • eBook ISBN: 9781483140704

About the Author

Larry Blonstein

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