A NOVEL HOMOMORPHIC PROCESSING OF ULTRASONIC ECHOES FOR LAYER THICKNESS MEASUREMENT

被引：11

作者：

MARTIN, C

MEISTER, JJ

ARDITI, M

FARINE, PA

机构：

[1] ECOLE POLYTECH FED LAUSANNE, GENIE MED LAB, CH-1024 ECUBLENS, SWITZERLAND

[2] ASULAB SA, CH-2001 NEUCHATEL, SWITZERLAND

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1992年 / 40卷 / 07期

关键词：

D O I：

10.1109/78.143454

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel homomorphic signal processing method is presented for accurate thickness measurement of thin layers. The method consists in taking the envelope of the inverse Fourier transform of a corrected logarithmic derivative of the energy spectrum (ES) of the measured signal. Simulations show excellent agreement between estimated and actual values. The method is validated by in vitro experiments at 10 MHz on Teflon(R) films, where thicknesses down to 50-mu-m are recovered, and preliminary in vivo results on arterial wall thickness estimates are presented.

引用

页码：1819 / 1825

页数：7

共 12 条

[1] SPEECH ANALYSIS AND SYNTHESIS BY LINEAR PREDICTION OF SPEECH WAVE [J].