CAJ | 학술논문

　　光纤持气率计是一种新型持气率测量仪器。根据光纤持气率计信号和小波变换多分辨率分析的特点，小波阈值方法可有效去除光纤探针信号噪声干扰。本文以能量比、信噪比和气相比为衡量各方法去噪性能指标，对不同阈值方法和阈值准则下进行光纤探针信号去噪处理。并验证了采用启发式SURE阈值(Heursure)去噪的可行性和优越性，对光纤持气率计信号滤波处理具有很好的参考价值。
　　광섬지기솔계시일충신형지기솔측량의기。근거광섬지기솔계신호화소파변환다분변솔분석적특점，소파역치방법가유효거제광섬탐침신호조성간우。본문이능량비、신조비화기상비위형량각방법거조성능지표，대불동역치방법화역치준칙하진행광섬탐침신호거조처리。병험증료채용계발식SURE역치(Heursure)거조적가행성화우월성，대광섬지기솔계신호려파처리구유흔호적삼고개치。
Optical fiber void fraction meter is a novel void fraction measuring instrument. Based on the characteristics of optical fiber void fraction meter signal and wavelet transform multi-resolution analysis, wavelet threshold method can eliminate noise in-terference effectively from optical fiber probe signal.In this paper, energy ratio,SNR and local void fraction are taken as performance index, and the optical fiber probe signal de-noising is executed by using different threshold methods and criterion. The feasibility and superiority of threshold de-noising using heuristic SURE (Heursure) is proved, which has a good reference value for the signal de-noising procession of optical fiber void fraction meter.