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Remote Sensing, Principles and Applications

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Side-scan. Remote Sensing, Principles and Applications. SONAR. Depth sounder ... Side-scan. Similar to SLAR. Positioning difficult. Fish, cable, processing unit ... – PowerPoint PPT presentation

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Title: Remote Sensing, Principles and Applications


1
Remote Sensing, Principles and Applications
  • Oceans 3 - SONAR

2
Remote Sensing, Principles and Applications SONAR
  • Sonar mapping of the ocean floor has four
    approaches
  • Depth sounder
  • Multi-beam sounar
  • Side-scan

3
Remote Sensing, Principles and Applications SONAR
  • Depth sounder
  • Simple, vertical profile
  • Cheap, easy to operate
  • Grids required for area coverage
  • Can be classified

4
Remote Sensing, Principles and Applications SONAR
  • Depth sounder - Classification
  • Uses return signal characteristics
  • Ambiguous solutions (16million)
  • Must be trained
  • Grids required for area coverage

5
Remote Sensing, Principles and Applications SONAR
  • Depth sounder - Classification

6
Remote Sensing, Principles and Applications SONAR
  • Side-scan
  • Similar to SLAR
  • Positioning difficult
  • Fish, cable, processing unit
  • Provides picture of the sea floor

7
Remote Sensing, Principles and Applications SONAR
  • Side-scan

8
Remote Sensing, Principles and Applications SONAR
  • Side-scan

9
Remote Sensing, Principles and Applications SONAR
  • Side-scan

10
Remote Sensing, Principles and Applications SONAR
  • Multi-beam SONAR
  • Multiple beams give a swath coverage
  • Records depth and position
  • Must be motion corrected
  • Can give 100 cover
  • Expensive

11
Remote Sensing, Principles and Applications SONAR
  • Multi-beam SONAR

12
Remote Sensing, Principles and Applications SONAR
  • Multi-beam SONAR

13
Remote Sensing, Principles and Applications SONAR
  • Multi-beam SONAR
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