- Design Principles
communication systems are now an integral part of most wide-area
telecommunication networks throughout the world. The purpose of
this book is to introduce the various elements of a satellite communication
system and to develop the principles of system design. The understanding
of a complete satellite system requires coverage of a broad range
of topics. An attempt has been made to treat each topic at a system
level in sufficient depth so as to develop a sound understanding
of each element and its relationship to the overall system. Problems
and examples have been included to illustrate the applicability
of the concepts introduced.
book consists of 12 chapters. The introductory chapter provides
an overview of satellite communications, including a brief history.
Chapter 2 discusses the fundamentals of satellite orbits and then
proceeds to discuss the fundamentals of satellite orbits, focusing
mainly on the principal features of the geostationary orbit and
optimisation of non-geostationary satellite constellations. An appendix
summarises various useful orbit-related formulas. Chapter 3 develops
a basic understanding of issues involved in selecting frequency
for a given satellite communication system. Chapter 4 introduces
essential topics such as antenna characteristics, the transmission
equation and the effects of noise. The final section of the chapter
ties together these concepts forming the basis of the overall system
design. Chapters 5 and 6 discuss, respectively, the topics of modulation
and coding applied to satellite communications,. The treatment is
at a system level so as to assist a system designer in the selection
of appropriate modulation and coding schemes for a given application.
Chapter 7 characterises various types of baseband signals commonly
used in satellite communications. A satellite is a common resource
which must be shared efficiently by a large number of users. Chapter
8 discusses various techniques used for accessing a satellite. Chapters
9 and 10 describe the main sub-systems and outline issues related
to the design of communication satellites and earth stations respectively.
One of the most innovative recent developments has been the concept
of deploying a constellation of low or medium earth satellites to
provide personal communication services. Chapter 11 addresses the
main issues in the design of non-geostationary satellite systems.
The concluding chapter of the book examines the likely future evolution
in various areas of satellite communication systems on the basis
of current trends and the impact of other developments in telecommunications.