气候变化领域集成服务门户(CCPortal): Estimating ultrasonic time-of-flight through echo signal envelope and modified Gauss Newton method

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DOI	10.1016/j.measurement.2016.08.013
	Estimating ultrasonic time-of-flight through echo signal envelope and modified Gauss Newton method
	Lu, Zhenkun; Yang, Cui; Qin, Donghong; Luo, Yuling; Momayez, Moe
发表日期	2016
ISSN	0263-2241
起始页码	355
结束页码	363
卷号	94
英文摘要	The accurate estimation of ultrasonic Time-Of-Flight (TOF) is essential in ultrasonic non-destructive testing (NDT). In this paper, a novel method for TOF estimation through envelope is proposed. Firstly, the wavelet denoising technique is applied to the noisy echo to improve the estimation accuracy. Then, the Hilbert transform (HT) is used in ultrasonic signal processing in order to extract the envelope of the echo and to reduce the computational burden. Finally, the echo parameters are estimated by using a Modified Gauss Newton (MGN) based nonlinear Least Squares (LS) estimation method. And, a fast algorithm is adopted to estimate the parameters of M-superimposed echoes. Numerical simulation and experimental results have been carried out to show the performances of the proposed method in estimating TOF of ultrasonic signal. (C) 2016 Elsevier Ltd. All rights reserved.
英文关键词	Ultrasonic echo; Hilbert transform; Wavelet denoising; Modified Gauss Newton method
WOS研究方向	Engineering ; Instruments & Instrumentation
WOS类目	Engineering, Multidisciplinary ; Instruments & Instrumentation
来源期刊	MEASUREMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158543
作者单位	Lu, ZK (corresponding author), Guangxi Univ Nationalities, Coll Informat Sci & Engn, Nanning 530006, Peoples R China.
推荐引用方式 GB/T 7714	Lu, Zhenkun,Yang, Cui,Qin, Donghong,et al. Estimating ultrasonic time-of-flight through echo signal envelope and modified Gauss Newton method[J],2016,94.
APA	Lu, Zhenkun,Yang, Cui,Qin, Donghong,Luo, Yuling,&Momayez, Moe.(2016).Estimating ultrasonic time-of-flight through echo signal envelope and modified Gauss Newton method.MEASUREMENT,94.
MLA	Lu, Zhenkun,et al."Estimating ultrasonic time-of-flight through echo signal envelope and modified Gauss Newton method".MEASUREMENT 94(2016).