Double exponential lightning current model adaptive filter design

Abstract

This paper studies the basic structure and principles of adaptive noise filter proposed for the lightning current filtered LMS algorithm signal interference with the traditional difference is fixed filter. Development of adaptive filtering technology and the rapid development of VLSI technology for noise reduction study provides a theoretical and technical support. It is able to detect and extract the useful signal from the noise environment. LMS has the ability to automatically adjust its own parameters and it requires little or no prior knowledge of the undesired signal and noise. At same time, by means of MATLAB that lightning current signal by a double exponential model were to dry process simulation. Verification indicates that the filter has a good performance and this some practical value in the lightning current waveform analysis.