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A low frequency denoising algorithm of optical fiber laser hydrophone based on wavelet transformation
Yang, Yahan1; Hao, Geyang2; Liu, Bo2; Wu, Guojun1,2; Lv, Pei1
2018
会议名称International Symposium on Optoelectronic Technology and Application 2018: Ocean Optics and Information Technology, OTA 2018
会议录名称Ocean Optics and Information Technology
卷号10850
会议日期2018-05-22
会议地点Beijing, China
出版者SPIE
产权排序2
摘要Optical fiber laser hydrophone which has more research potentiality and value owing to higher acoustic pressure sensitivity, smaller size and lower difficulty of multiplexing. However the detecting capacity to low frequency signal of optical fiber laser hydrophone will be limited because of the low frequency noise such as 1/f noise and thermal noise of optical fiber laser and pumped laser. In order to suppress these noises, the iterative discrete wavelet transformation algorithm was designed which used multi-scale trait of wavelet transform. The different spectral components of underwater acoustic signal were separated and the noises below 1kHz were eliminated on the basis of the target signal amplitude would not be weakened. The measured data acquisitive from anechoic tank showed that the algorithm reduced the noise below 1kHz nearly 50dB and the Signal to Noise Ratio(SNR) is improved from 55.23dB to 84.05dB. © 2018 SPIE.
作者部门先进光学仪器研究室
DOI10.1117/12.2505484
收录类别EI
ISBN号9781510623422
语种英语
ISSN号0277786X;1996758X
EI入藏号20185206315936
引用统计
文献类型会议论文
条目标识符http://ir.opt.ac.cn/handle/181661/31116
专题先进光学仪器研究室
作者单位1.Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, Shandong; 266235, China;
2.Xian Institute of Optics and Precision Mechanics of CAS, Xian, Shanxi; 710119, China
推荐引用方式
GB/T 7714
Yang, Yahan,Hao, Geyang,Liu, Bo,et al. A low frequency denoising algorithm of optical fiber laser hydrophone based on wavelet transformation[C]:SPIE,2018.
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