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PostPosted: Wed 19 May 2010 20:08 
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Joined: Thu 16 Mar 2006 23:45
Posts: 490
My book, Channel Characterisation and System Design for Sub-Surface Communications, essentially a copy of my 2003 PhD thesis, is now available for sale at Lulu. A companion volume, Cave Radiolocation, a selection of reprints of CREG articles from 1994 to 2006, is also available. These 2010 editions are essentially the same as the 2004 'un-published' editions that I used to sell myself, but with swankier covers. Go to my storefront at or, for further information, go to my Cave Radio page at

Details of each book follow...

Cave Radiolocation by David Gibson. ISBN 978-1-4457-7105-2. Softbound, 76pp, A4. Published by the author via Lulu Enterprises, Inc.
Description: This book is a collection of essays on radiolocation in caves, and related topics. Most of the articles have previously been published in the journal of the Cave Radio and Electronics Group, a special interest group of the British Cave Research Association. The topic is approached from a theoretical point-of-view, studying the mechanism of propagation of the fields, and how their measurement can be used to provide a location tool for use in cave surveying. In addition, other peripheral topics are covered, such as channel sounding, electronic measurement of clinometer angle and the copyright of cave surveys.
Keywords: cave surveying, channel sounding, electromagnetic theory, field gradient, radiolocation.

Channel Characterisation and System Design for Sub-Surface Communications by David Gibson. ISBN 978-1-4457-6953-0. Softbound, 298pp, A4. Published by the author via Lulu Enterprises, Inc.
Description: This book is a theoretical study of subterranean radio communication, with the focus being on methods that depend primarily on the penetration of electromagnetic fields through the ground. Through-the-earth communication using electromagnetic fields - specifically magnetic induction - plays a role in search and rescue systems used in the mining industry. It is also used for borehole telemetry, pipeline location and by cavers and pot-holers. Chapters describe propagation, antennas, and the design of transmitters and receivers. A figure of merit - the specific aperture - is introduced as an aid to antenna design. A crucial aspect of all systems is the signal to noise ratio, for which the strategy of noise-matching is introduced. The design of a wide-band low-frequency sounder is described, for channel evaluation using a non-ideal binary sequence. A method of calculating the inverse of a generalised sequence is described, for which cross-correlation results in a system identification signal.
Keywords: atmospheric noise, cave radio, channel sounding, electromagnetic theory, inverse sequence, mine rescue, noise-matching, noise temperature, propagation, radiolocation, sequence design, specific aperture, sub-surface communication.
Corrigenda: If you have a copy of the unpublished edition (V1.1; 2004) you may wish to download a corrigenda from


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