The Algorithm of Acoustic Location for Boiler Tube Leakage
The time delay estimation algorithm based on generalized cross correlation, can suppress the noise power effectively. More accurate result can be gotten by this method of time delay estimation. It is proved by simulation and experimentation that the estimated value of time delay given by generalized cross correlation method is more accurate than which is given by basic correlation method when the signal and noise ratio is stationary, thus the location result based on the time delay is more accurate.
Zhengyi Jiang and Chunliang Zhang
P. Tong et al., "The Algorithm of Acoustic Location for Boiler Tube Leakage", Advanced Materials Research, Vols. 97-101, pp. 3024-3027, 2010