Three-Dimensional Localization System for Impulsive Noise Sources Using Ultra-Wideband Digital Interferometer Technique

Abstract

This paper presents an ultra-wideband (UWB) digital interferometer scheme for locating the impulsive noise radiation from partial discharge (PD) sources in three spatial dimensions. This UWB interferometer localization technique is based on the idea of extracting the phase differences at different frequencies between a pair of the received electromagnetic (EM) signals by the Fast Fourier Transform (FFT). These phase differences are directly related to the direction of arrival of the received signals and used to estimate the angular locations of the source in azimuth and elevation angles. The geometry of the problem is considered as two UWB digital interferometer sites for the experimental measurements. Then, the triangulation scheme was proposed to the 3-D source location. To show the validity and the accuracy of our proposed scheme, a comparison study is shown between time differences of arrival (TDOA) localization scheme which is estimated by conventional cross correlation method and this interferometer proposed localization technique.