Leak detection in waterworks for preserving environment: A comparative study

Fast and robust algorithms are necessary for helping technicians in detecting leaks in waterworks and pipelines using spectral analysis. FDM (Filter Diagonalization Method) and DPA (Decimated Padé Approximant) have demonstrated their robustness in spectral analysis of leakage in waterworks. The input time signal points from an experimental plant or auto-correlation functions are given via measurements or computations, and the task is to reconstruct the unknown components as the harmonic variables in terms of the fundamental complex frequencies and amplitudes.This work presents a comparison between the aforementioned algorithms pointing out some drawbacks.