Title :
Acoustic Travel-Time Estimation by Fast Correlation Combined with Up-Sampling
Author :
Yan, Hua ; Xu, Ying ; Cui, Kexin ; Liu, Lijun ; Xu, Shaobo
Author_Institution :
Sch. of Inf. Sci. & Eng., Sheyang Univ. of Technol., Shenyang
Abstract :
The key for acoustic temperature field measurement is to measure acoustic travel-time accurately. Restricted by sample interval, the acoustic travel-time estimation accuracy by fast correlating of the transmitted and the received signals is not high enough. A new method based on fast correlation combined with up-sampling is proposed. Ideal anti-imaging filters are implemented in frequency domain. Simulation research in MATLAB shows that it has much higher estimation accuracy compared with the fast correlation method. The larger the up-sampling factor, the higher the accuracy will be.
Keywords :
acoustic signal processing; correlation methods; frequency-domain analysis; acoustic temperature field measurement; acoustic travel time; acoustic travel-time estimation; antiimaging filters; fast correlation; frequency domain; Acoustic measurements; Acoustical engineering; Filters; Information science; Intelligent networks; Intelligent systems; Sampling methods; Temperature measurement; Temperature sensors; Tomography; acoustic temperature measurement; fast correlation; ideal anti-imaging filter; travel-time estimation; up-sampling;
Conference_Titel :
Intelligent Networks and Intelligent Systems, 2008. ICINIS '08. First International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3391-9
Electronic_ISBN :
978-0-7695-3391-9
DOI :
10.1109/ICINIS.2008.83
