John C. Cochran

Introduction to Sonar Transducer Design

• Gebundenes Buch

Produktbeschreibung

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.

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Produktdetails

• Verlag: Wiley / Wiley & Sons
• Artikelnr. des Verlages: 1W119851050
• 1. Auflage
• Seitenzahl: 544
• Erscheinungstermin: 3. Mai 2022
• Englisch
• Abmessung: 260mm x 183mm x 33mm
• Gewicht: 1096g
• ISBN-13: 9781119851059
• ISBN-10: 111985105X
• Artikelnr.: 62541931

Autorenporträt

John C. Cochran, PhD, 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.

Inhaltsangabe

Preface xvii

1 Acoustic Waves and Radiation 1

1.1 Small Signals/Linear Acoustics 1

1.1.1 Compressibility 2

1.1.2 Small Signals/Linear Acoustics 2

1.1.3 Relationship Between Acoustic Pressure and Acoustic Density 2

1.1.4 Condensation 2

1.1.5 Time Derivative Using Eulerian and Lagrangian Description 3

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

1.2.1 Equation of Continuity in a Single Dimension 3

1.2.2 The Force Equation in a Single Dimension 4

1.2.3 The Wave Equation in a Single Dimension 5

1.2.4 Generalization of the Wave Equation to Three Dimensions 5

1.2.5 Helmholtz Wave Equation 6

1.2.6 Velocity Potential 6

1.3 Plane Waves 7

1.3.1 Harmonic Plane Waves 7

1.3.2 Plane Waves in an Infinite Media 7

1.3.3 Plane Wave Acoustic Intensity 8

1.3.4 Plane Wave Acoustic Impedance 8

1.4 Radiation from Spheres 8

1.4.1 General Solution to Radiation from Spheres 9

1.4.2 Spherical Wave Acoustic Impedance 11

1.4.3 Axis-Symmetric Radiation from a Sphere - the Spherical Source 11

1.4.4 The Simple Spherical Source 12

1.4.5 Source Strength 12

1.4.6 The General Simple Source 13

1.4.7 Acoustic Reciprocity and Reciprocity Factor 13

1.5 Radiation from Sources on a Cylindrical Surface 14

1.5.1 General Solution to Radiation from Cylinders 15

1.5.2 Radiation from an Infinitely Long Cylinder 18

1.5.3 The Simple, Infinitely Long Cylindrical Source 19

1.5.4 Radiation from an Infinitely Long Strip on an Infinitely Long Cylinder 20

1.5.5 Radiation from a Finite Source on a Cylinder with a Periodic z Dependence 21

1.5.6 Radiation from a Finite Source on a Cylinder with a Uniform z Dependence 22

1.5.7 The Simple Cylindrical Source - Radiation from a Finite Length Cylinder in an Infinitely Long Cylinder Baffle 25

1.6 Integral Formulations 26

1.6.1 The Green's Function 27

1.6.2 Helmholtz Integral Formulations 28

1.6.3 Far Field Approximation 29

1.6.4 An Application of the Simple Source Integral Formulation - Radiation from a Finite Cylinder 34

1.7 Linear Apertures 36

1.7.1 Far Field Radiation (Beam) Patterns as a Fourier Transform of the Linear Aperture Function - the Directivity Function 36

1.7.2 A Simple Rectangular Aperture Function as an Example of a Linear Aperture 38

1.7.3 The Triangular Window Aperture Function as a Linear Aperture 41

1.7.4 The Cosine Window Aperture Function as a Linear Aperture 43

1.7.5 Other Linear Apertures 45

1.7.6 The Far Field Radiation Pattern of a Linear Aperture on a Cylindrical Surface 45

1.8 Planar Apertures 49

1.8.1 The Green's Function for Radiation from Planar Apertures Located on a Rigid Plane Baffle 49

1.8.2 Far Field Radiation Patterns as a Fourier Transform of the Planar Aperture Function 50

1.8.3 The Rectangular Piston in an Infinite Plane Baffle 52

1.8.4 The Circular Piston in an Infinite Plane Baffle 54

1.8.5 The Far Field Radiation Pattern of a Circular Annular Ring 59

1.8.6 The Elliptical Piston in an Infinite Plane Baffle 60

1.8.7 Impact of Boundary Impedance on Radiation Patterns from Planar Apertures 60

1.9 Directivity and Directivity Index (DI) 63

1.9.1 Definition of Directivity and Directivity Index (DI) 65

1.9.2 Relationship Between Source Level and Directivity Index 67

1.9.3 The Directivity of Baffled vs. Unbaffled Sour