TETLEY, L. (2001). Electronic Navigation Systems (3rd ed.).pdf

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Electronic Navigation Systems
3rd edition
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Electronic Navigation
Systems
Laurie Tetley IEng FIEIE
Principal Lecturer in Navigation and Communication Systems
and
David Calcutt PhD MSc DipEE CEng MIEE
Formerly Senior Lecturer, Department of Electrical and Electronic Engineering,
University of Portsmouth
OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE NEW DELHI
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Butterworth-Heinemann
Linacre House, Jordan Hill, Oxford OX2 8DP
225 Wildwood Avenue, Woburn, MA 01801–2041
A division of Reed Educational and Professional Publishing Ltd
A member of the Reed Elsevier plc group
First published Electronic Aids to Navigation 1986
Reprinted 1988
Second edition published as Electronic Aids to Navigation: Position Fixing 1991
Third edition 2001
© L. Tetley and D. Calcutt 2001
All rights reserved. No part of this publication may be reproduced in
any material form (including photocopying or storing in any medium by
electronic means and whether or not transiently or incidentally to some
other use of this publication) without the written permission of the
copyright holder except in accordance with the provisions of the Copyright,
Designs and Patents Act 1988 or under the terms of a licence issued by the
Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London,
England W1P 0LP. Applications for the copyright holder’s written
permission to reproduce any part of this publication should be addressed
to the publishers
British Library Cataloguing in Publication Data
Tetley, L. (Laurence), 1941–
Electronic navigation systems. – 3rd ed.
1. Electronics in navigation
I. Title II. Calcutt, D. (David), 1935–
623.8'504
Library of Congress Cataloguing in Publication Data
A catalogue record for this book is available from the Library of Congress
ISBN 0 7506 51385
Composition by Genesis Typesetting, Laser Quay, Rochester, Kent
Printed and bound in Great Britain
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Contents
Preface
ix
Acknowledgements
xi
1
1.1 Introduction
1
1.2 Maritime navigation systems and their frequencies
1
1.3 Radio wave radiation
2
1.4 Frequency, wavelength and velocity
4
1.5 Radio frequency spectrum
5
1.6 Radio frequency bands
6
1.7 Radio wave propagation
8
1.8 Signal fading
13
1.9 Basic antenna theory
14
1.10 Glossary
19
1.11 Summary
20
1.12 Revision questions
21
Chapter 2 Depth sounding systems
22
2.1 Introduction
22
2.2 The characteristics of sound in seawater
22
2.3 Transducers
27
2.4 Depth sounding principles
31
2.5 A generic echo sounding system
35
2.6 A digitized echo sounding system
38
2.7 A microcomputer echo sounding system
38
2.8 Glossary
41
2.9 Summary
43
2.10 Revision questions
44
Chapter 3 Speed measurement
45
3.1 Introduction
45
3.2 Speed measurement using water pressure
45
52
57
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