John C. Cochran 
Introduction to Sonar Transducer Design 

INTRODUCTION TO SONAR TRANSDUCER DESIGN

A comprehensive introduction to sonar transducer design, complete with real world examples, step-by-step instruction, and detailed mathematical review

In Introduction to Sonar Transducer Design, renowned sensor engineer Dr. John C. Cochran delivers an instructive and comprehensive exploration of the foundations of sonar transducer design perfect for beginning and experienced professional transducer designers. The book offers a detailed mathematical review of the subject, as well as fulsome design examples.

Beginning with a description of acoustic wave propagation, along with a review of radiation from a variety of sources, the book moves on to discuss equivalent circuit models that explain wave propagation in solids and liquids. The book reviews examples of projectors and hydrophones accompanied by complete mathematical solutions. All included math is developed from first principles to a final solution using an intuitive, step-by-step approach.

Introduction to Sonar Transducer Design offers professionals and students the analytical tools and assumptions required for start-to-finish transducer design. It also provides:

* A thorough introduction to acoustic waves and radiation, including small signals, linear acoustics, the equations of continuity, motion, the wave equation in a fluid media, and integral formulations

* Comprehensive explorations of the elements of transduction, including various forms of impedance, and mechanical and acoustical equivalent circuits, as well as their combination

* Practical discussions of waves in solid media, including homogeneous, isotropic, elastic, and solid media, piezoelectricity and piezoelectric ceramic materials, and waves in non-homogeneous, piezoelectric media

* In-depth examinations of sonar projectors and sonar hydrophones, including the elements and tools of sonar projector and sonar hydrophone design, as well as their applications

Perfect for sonar system engineers, particularly those involved in defense, Introduction to Sonar Transducer Design will also earn a place in the libraries of acoustic, audio, underwater communication, and naval engineers.

Inhaltsverzeichnis

Preface xvii

1 Acoustic Waves and Radiation 1

1.1 Small Signals/Linear Acoustics 1

1.2 The Equations of Continuity, Motion, and the Wave Equation in a Fluid Media 3

1.3 Plane Waves 7

1.4 Radiation from Spheres 8

1.5 Radiation from Sources on a Cylindrical Surface 14

1.6 Integral Formulations 26

1.7 Linear Apertures 36

1.8 Planar Apertures 49

1.9 Directivity and Directivity Index (DI) 63

1.10 Scattering and Diffraction 72

1.11 Radiation Impedance 89

1.12 Transmission Phenomena 125

1.13 Absorption and Attenuation of Sound 133

2 Mechanical/Acoustical Equivalent Circuits 137

2.1 Different Forms of Impedance 138

2.2 Mechanical Equivalent Circuits 139

2.3 Acoustical Equivalent Circuits 153

2.4 Combining Mechanical and Acoustical Equivalent Circuits 163

2.5 Introduction to Transduction 165

3 Waves in Solid Media 173

3.1 Waves in Homogeneous, Isotropic, Elastic, Solid Media 173

3.2 Piezo-electricity and Piezo-electric Ceramic Materials 208

3.3 Waves in Non-Homogenous, Piezo-electric Media 222

4 Sonar Projectors 305

4.1 Tools for Underwater Sonar Projector Design 305

4.2 Specific Applications in Underwater Sonar Projector Design 313

4.3 Special Topics in Underwater Sonar Projector Design 422

5 Sonar Hydrophones 439

5.1 Elements of Sonar Hydrophone Design 439

5.2 Analysis of Noise in Hydrophone/Preamplifier Systems 445

5.3 Specific Applications in Underwater Sonar Hydrophone Design 458

References 497

Appendix 499

Index 509

Über den Autor

John C. Cochran, Ph D, is a former Principal Engineering Fellow in the Advanced Technology Department of Raytheon Integrated Defense Systems responsible for sonar system design and operation. He is a subject matter expert in the design and development of advanced sensors, sensor arrays, and undersea sensing systems.