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http://dx.doi.org/10.5050/KSNVN.2005.15.6.738

Ship Radiated Noise Measurement Methods and Accuracy Analysis  

Lee, Phil-Ho (국방과학연구소)
Yoon, Jong-Rak (부경대학교 정보통신공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.15, no.6, 2005 , pp. 738-748 More about this Journal
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
Ship Radiated Noise; Source Level Estimation; Radiated Noise Measurement; Hydrophone Array; Transmission Loss Anomaly;
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