From the Back Cover
The aims of the book - written by a practising engineer forpractising engineers - are to provide an understanding of the basicprinciples of sonar and, to develop formulae and "rules of thumb"for sonar design and performance analysis. Ashley Waite uses hislong experience in the design, trials and performance analysis ofsonar systems to provide practical guidance and solutions toproblems encountered by sonar engineers and technicians.
The books divides into the following parts:
* Equipment parameters: the motion of sound in an elastic medium;definitions of sound intensity and source level; the use ofprojector arrays to increase the source level; the use ofhydrophone arrays to improve the signal to noise ratio of a wantedsound.
* The propagation of sound in the sea and the backgrounds todetection: spreading and absorption losses; propagation modes andsimple modelling; noise and reverberation; the sonarequations
* Practical sonar systems: passive and active sonar systems;passive broadband, narrowband, intercept and communications (as aspecial case of intercept) sonars; active sonars for the detectionof submarines, mines and torpedoes.
Sonar for Practising Engineers, third edition, covers all aspectsof sonar systems and has extensive worked examples. No priorknowledge of sonar is assumed and the physical principles andmathematics will be readily understood by engineers, techniciansand students of underwater acoustics. New to this edition, areend-of-chapter exercises and solutions for self assessment andtraining.
About the Author
ASHLEY WAITE retired from the UK Ministry of Defence in 1990 after 40 years of Underwater Warfare Research at Portland. He then joined Thomson Marconi Sonar (now Thales Underwater Systems Limited) as a Consultant for a further 10 years. He still maintains an involvement with sonar in a freelance capacity.