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Ship Radiated Noise Measurement Methods and Accuracy Analysis

선박 방사소음의 측정방법 및 정확도 해석

  • Published : 2005.06.01

Abstract

The ship radiated noise level fluctuates by the difference of interference and reverberation according to measurement methods and environmental conditions. These phenomena cause error of the source level estimation even in the same environment conditions. This paper describes a quantitative analysis and a reduction method for an error value to the source level estimation in spatial and temporal interference environment. The design criteria of the radiated noise measurement array composed of omni-directional hydrophones and the source level accuracy in the deep water range are given. The source level accuracy in the shallow water range is also derived based on the statistical model of the multiple reflection paths. The results are verified using the water tank experiment and the sea trial.

Keywords

References

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Cited by

  1. Error Characteristics of Ship Radiated Noise Estimation by Sea Surface Scattering Effect vol.23, pp.6, 2013, https://doi.org/10.5050/KSNVE.2013.23.6.563
  2. A Study on Specific Noise Characteristics of a T/S NARA vol.30, pp.5, 2018, https://doi.org/10.13000/JFMSE.2018.10.30.5.1696