Title :
Adaptive Line Enhancer for Time Delay Estimation of Ultrasonic Echoes
Author :
Tiengwattanatum, Chayanin ; Naoyuki, Nakamura ; Shimamura, Tetsuya
Author_Institution :
Grad. Sch. of Sci. & Eng., Saitama Univ., Saitama
Abstract :
A new method of time delay estimation for ultrasonic echoes in noisy environment is proposed. By using the least mean square algorithm for adaptive line enhancer as a pre-filter and following by a cross correlator can achieve better performance than the conventional method. Computer simulations results confirm the superiority of the proposed method even at very low signal-to-noise ratios.
Keywords :
delay estimation; echo; least mean squares methods; ultrasonics; adaptive line enhancer; time delay estimation; ultrasonic echoes; Additive noise; Computer simulation; Delay effects; Delay estimation; Detectors; Line enhancers; Noise figure; Signal processing; Signal to noise ratio; Working environment noise;
Conference_Titel :
Communications and Information Technologies, 2008. ISCIT 2008. International Symposium on
Conference_Location :
Lao
Print_ISBN :
978-1-4244-2335-4
Electronic_ISBN :
978-1-4244-2336-1
DOI :
10.1109/ISCIT.2008.4700215
