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Contents
Foreword
Section 1 - Basic Principles And Applications
Introduction
Basic Sonar Principles
Side Scan Sonar Characteristics
Geometry Of Side Scan Sonar
Applications Of Side Scan Sonar
Section 2 - Sonar Design Details
Introduction
Source Level
Pulse Length
Across-Track (Range) Resolution
Beamwidth
Beam Patterns And Directivity
Near-Field And Far-Field
Along-Track (Transverse) Resolution
Frequency
Section 3 - Underwater Acoustics
Introduction
Sound Velocity
Refraction
Spreading
Absorption
Scattering (Reverberation)
Mechanisms For Sound To Return To The Sonar
Reflection
Backscatter (Bottom Reverberation)
Time Varied Gain
Noise
- Self-Made Noise Sources
- Ambient Noise Sources
Acoustic vs. Electrical noise
Noise And Reverberation Limiting
The Sonar Equation
Section 4 - Record In1erpretation
Introduction
Side Scan Sonar Record Interpretation Contents
Basics
- Side Scan Sonar Image Formation
- Side Scan Sonar Geometry
- What makes a good record?
Surface Effects
- Surface Returns
- Sea Clutter And Waves
- Multiple Echoes
- Wakes
- Quenching
Targets And Shadows
- Shadowing
- Projections And Depressions
- Targets, Targets Everywhere
- Fish
- Target Size
- Target Recognition
- "Negative" Targets
- Misleading Targets
Effects Related To Design Or Function
- Side Lobe Returns
- Crosstalk
- Second Sweep Returns
- Beam Spreading
Acoustics
- Refraction
- Backscatter
Noise
- Marine Animals
- Depth Sounder Interference
- Sparker Noise
- Propeller Noise
- Self-Made Vessel Noise
- AC Power Noise
- Radio Banding
- Cable Fault
Towing Effects
- Heave
- Yaw
- Turns
- Curved Tracks
- Hitting The Bottom
- Lost Tailfins
Quantitative Treatment
- Speed Distortion
- Slant Range Distortion
- Horizontal Offset Calculation
- Target Height Calculation
- Sonar Pulse Repetition Rate
- Across- And Along-Track Scales
-- Across-Track Scale
-- Along-Track Scale
-- Application
-- Summary
- Scale-Corrected Side Scan Sonar Records
Case Studies
- Case Study (Airplane Search – Steadfast Marine)
- Case Study (Airplane Search – Colmek Systems Engineering)
- Case Study (Sunken Fishing Boat Examination)
Side Scan Sonar/Sub-Bottom Profiling Reference Bibliography




Pär Ahlgren
Pär Ahlgren 2012-07-30 23:38:36
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Huvudinlägg Recen "SIDE SCAN SONAR RECORD INTERPRETATION" Pär Ahlgren 2012-07-30 23:37
svara Fullständig innehållsförteckningPär Ahlgren2012-07-30 23:38

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