Noise Immunity Analysis of Time Delay Estimation Techniques Used on Ultrasonic Simulated Echoes

被引：0
|
作者：
Tellez, A. [1 ]
Bazan, I. [1 ]
Leija, L. [1 ]
Vera, A. [1 ]
机构：
[1] CINVESTAV, Dept Ingn Elect, Secc Bioelect, Mexico City 07360, DF, Mexico
来源：
2008 5TH INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING, COMPUTING SCIENCE AND AUTOMATIC CONTROL (CCE 2008) | 2008年
关键词：
white noise; ultrasonic signal; cross correlation (CC); signal to noise ratio (SNR); average power of the signal; quadrature phase demodulation (QPD); phase difference (PD); phase shift (PS); echo;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a noise immunity analysis of time delay estimation (TDE) techniques used on ultrasonic echoes for non invasive temperature estimation. Four methods are analyzed. The methodology consists on corrupting a simulated ultrasonic signal (ideal signal) with white noise and a signal-to-noise ratio of 3dB and 6dB. After this, noise immunity analysis is performed for every method. The TDE techniques used in this work are Phase Difference, Phase Shift, Cross-Correlation and Quadrature Phase Demodulation. The purpose of this work is to determine the best method for non invasive temperature estimation.
引用
收藏
页码：440 / 444
页数：5
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