Paper Title:
Measuring Sediment Thickness in Borehole by Ultrasonic Based on Channel Estimation
  Abstract

Sediment on the bottom of borehole forms a major part which is often responsible for reducing the bearing capacity of pile. The normal method of measuring sediment thickness by ultrasonic signal is to measure the sound time and intensity of echo signal. This paper presents a novel measurement method by estimating the ultrasonic channel. Wiener filter is applied to estimate the ultrasonic optimal channel under minimum mean square error criteria. Experiments of estimating channel based on Wiener filter have been conducted with given signals and actual ultrasonic detection echo. The influence of noise in the signal has been discussed. The results show that, during signals high SNR, the estimated channel is corresponding to the sharp changes in the actual signal and can be used to determine the sediment thickness.

  Info
Periodical
Advanced Materials Research (Volumes 204-210)
Edited by
Helen Zhang, Gang Shen and David Jin
Pages
1170-1174
DOI
10.4028/www.scientific.net/AMR.204-210.1170
Citation
D. Fan, C. Z. Lv, M. Y. Cao, "Measuring Sediment Thickness in Borehole by Ultrasonic Based on Channel Estimation", Advanced Materials Research, Vols. 204-210, pp. 1170-1174, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Yan Xiong, Miao Zhang, Xiao Ping Li, Shao Juan Yu
Abstract:Based on chaotic characteristics in vertical direction of vibrating screen sides, nonlinear methods were proposed to diagnose crack of...
1258
Authors: Ying Lin Li, Li Hui Cao, Lian He Yang
Abstract:Weft knitted pattern design is one of the most important compositions of textile CAD. Traditional pattern design has a higher request on...
576
Authors: Yong Hua Zhang, Jian Hui He, Guo Qing Zhang
Abstract:This paper aims to understand influence of the obliquity of fin ray on its motion performance. An environment-friendly propulsion system...
267
Authors: Ioana Pintilie, Francesco Moscatelli, Roberta Nipoti, Antonella Poggi, Sandro Solmi, Lars S. Løvlie, Bengt G. Svensson
Abstract:The effect of nitrogen (N) introduced by ion implantation at the SiO2/4H-SiC interface on the capacitance of the MOS capacitors is...
326
Authors: Yi Mei, Fang Ping Wang, Qiao Ying Liu, Yu Tao Mao
Abstract:To solve the thermal deformation caused by thermal load of heavy machinery gearbox, it is established that coupled analysis model to carry...
651