Title :
Study on the acoustic wave flying time measurement method based on the second related technology
Author :
Tian, Feng ; Zhang, Changhui ; Liu, Song ; Bian, Tingting ; Zhang, Weijun
Author_Institution :
Coll. of Comput. Sci., Shenyang Inst. of Aeronaut. Eng., Shenyang, China
Abstract :
Accurate measurement of the acoustic wave flying time in furnace is the key of acoustic measurement technology of furnace temperature distribution. This paper proposes the acoustic wave flying time measurement method based on the second related technologies. First, the received signal is dealt with autocorrelation process, and then it is dealt by cross-correlation with reference signal, which realizes the reconstruction of useful signal in the noise signal. Finally, time-delay estimation is done based on the reconstruction signal. The simulation result shows that compared with generalized cross-correlation method, this method shows stronger anti-noise capability and higher measurement accuracy.
Keywords :
acoustic correlation; acoustic measurement; delay estimation; furnaces; signal reconstruction; temperature distribution; temperature measurement; acoustic measurement technology; acoustic thermometry; acoustic wave flying time measurement; cross correlation method; furnace temperature distribution; noise signal; second related technology; signal reconstruction; time-delay estimation; time-of-flight measurement; Acoustic measurements; Acoustic noise; Acoustic waves; Background noise; Delay effects; Delay estimation; Furnaces; Noise measurement; Signal processing; Time measurement; acoustic thermometry; acoustic time of flight; cross correlation method; second related technology;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274111
