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BS ISO 20233-2:2019 Ships and marine technology. Model test method for propeller cavitation noise evaluation in ship design - Noise source localization >
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BS ISO 20233-2:2019 Ships and marine technology. Model test method for propeller cavitation noise evaluation in ship design - Noise source localization, 2019
- National foreword
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Model test setup and conditions
- 5 Noise measurement instrumentation
- 5.1 Hydrophone array
- 5.1.1 General
- 5.1.2 Hydrophone
- 5.1.3 Array types
- 5.1.4 Array setup
- 5.1.5 Array calibration
- 5.2 Data acquisition
- 5.2.1 General
- 5.2.2 Sampling frequency
- 5.2.3 Resolution
- 5.2.4 Syncronization for multiple channel sampling
- 5.2.5 Filtering
- 5.2.6 Acquisition time
- 6 Noise measurement procedure
- 6.1 Propeller cavitation noise measurement
- 6.2 Background noise measurement
- 6.3 Reference field measurement
- 7 Post processing
- 7.1 Array signal processing
- 7.1.1 Bartlett processor
- 7.1.2 MV processor
- 7.1.3 Other option for the processors
- 7.2 Graphical display of the output
- 7.3 Spatial resolution
- Annex A (informative) Hydrophone array design method
- Annex B (informative) Signal model for array signal processing
- Bibliography [Go to Page]
