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 | |
会议日期 | 2018-05-22 |
会议地点 | Beijing, China |
卷号 | 10850 |
DOI | 10.1117/12.2505484 |
英文摘要 | 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. |
产权排序 | 2 |
会议录 | Ocean Optics and Information Technology |
会议录出版者 | SPIE |
语种 | 英语 |
ISSN号 | 0277786X;1996758X |
ISBN号 | 9781510623422 |
内容类型 | 会议论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/31116] |
专题 | 海洋光学技术研究室 |
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]. 见:. Beijing, China. 2018-05-22. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论