| Cavitation Noise Detection Method using Continuous Wavelet Transform and DEMON Signal Processing |
|
Hee-chang Lee, Tae-hyeong Kim, Kwon Sohn, Phil-ho Lee |
|
The 6th Research and Development Institute, Agency for Defense Development |
| 연속 웨이브렛 변환 및 데몬 신호처리를 이용한 캐비테이션 소음 검출 방법 |
|
이희창, 김태형, 손권, 이필호 |
|
국방과학연구소 제6기술연구본부 |
|
|
| Abstract |
|
Cavitation is a phenomenon caused by vapour cavities that is produced in rapid pressure changes. When the cavitation happened, the sound pressure level of a underwater radiated noise is increased rapidly. As a result, it can increase the probability of the identification or classification of a our warship's acoustic signature by an enemy ship. However, there is a problem that it is hard to precisely detect the occurrence of a cavitation noise. Therefore, this paper presents recent improvements in terms of the cavitation noise measurement by using continuous wavelet transform and DEMON(Detection of Envelope Modulation on Noise) signal processing. Then, we present that the suggested scheme is more suitable for detecting the cavitation than existing algorithms. |
| Key Words:
Cavitation Noise, Cavitation Inception Speed, DEMON Signal Processing, Continuous Wavelet Transform |
|
PDF Links
Full text via DOI
Download Citation
