Open AccessA Novel Approach for On‐Site Measurement of Radiated Emission of EMU
Author(s) -
Liu Dong,
Wen Yinghong,
Xiao Jianjun
Publication year - 2020
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2020.03.013
Subject(s) - noise (video) , acoustics , signal (programming language) , ambient noise level , electromagnetic noise , electromagnetic compatibility , electromagnetic environment , electromagnetic interference , computer science , electromagnetic radiation , physics , electronic engineering , telecommunications , optics , engineering , artificial intelligence , image (mathematics) , programming language , sound (geography)
The main problem in on‐site radiated emission test of EMU (Electric multiple unit) is the excess ambient electromagnetic noise due to the complex electromagnetic environment. In order to solve this problem, this paper proposed a novel approach for on‐site radiated emission measurement test. A joint algorithm comprise blind source separation and adaptive signal processing is used to suppress the ambient electromagnetic noise. The normalized estimation of ambient electromagnetic noise is obtained by blind source separation algorithm, then the normalized estimation of ambient electromagnetic noise is used as the reference signal to adaptively cancel the ambient noise in the mixed electromagnetic noise, so the estimation of radiated noise of EMU is obtained. The simulation and experiment results showed that the proposed method can effectively suppress the ambient electromagnetic noise, thus realize the accurate measurement of the radiated emission of the EMU.