The application of correlation algorithm in the location of underground pipeline water leakage

A design adopted the correlation algorithm is introduced in this paper that how to locate the water leakage of underground pipeline. The hardware is designed and debugged based on DSP. And the real-time collecting, filting and correlating of two channel audio signal are evaluated in the experiment condition. The error of correlation algorithm is analyzed from the theory and some advice based on it is promoted. The design and implementation of the system provide great support to the productivity of the locating equipment of the water leakage of underground pipe line.