EMD-based signal denoising in EMP measurement system

Author

Huang Zhengyu ; Shi Lihua ; Zhou Yinghui ; Ma Rupo

Author_Institution

Nat. Key Lab. on Electromagn. Environ. Effects & Electro-Opt. Eng., PLA Univ. of Sci. & Technol., Nanjing, China

Volume

2

fYear

2013

fDate

16-19 Aug. 2013

Firstpage

796

Lastpage

801

Abstract

To remove the interference of strong environmental noise, fiber-optic transmission system is usually used in the measurement of electromagnetic pulse (EMP). However, due to the thermo-noise in fiber optic emitting and receiving circuits, there are still some inevitable noise in the transmission system. This effect limits the use of the EMP measurement system in shielded enclosures. An improved signal denoising method based on empirical mode decomposition (EMD) to enhance the signal-to-noise ratio (SNR) in EMP measurement has been proposed. The method we proposed is validated through simulation and real EMP experiments data, and it, compared to other approach, has better stability in the case of signals with lower initial SNR (-2 to 5 dB). The dynamic range of fiber-optic transmission system raised about 20 dB.

Keywords

electromagnetic interference; electromagnetic pulse; fibre optic sensors; signal denoising; EMD-based signal denoising; EMP measurement system; electromagnetic pulse; empirical mode decomposition; fiber-optic transmission system; signal-to-noise ratio; Dynamic range; Noise measurement; Noise reduction; Optical fiber sensors; Optical variables measurement; Signal to noise ratio; Electromagnetic Pulse (EMP); Empirical mode decomposition (EMD); denoising; fiber-optic transmission system;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Measurement & Instruments (ICEMI), 2013 IEEE 11th International Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4799-0757-1

Type

conf

DOI

10.1109/ICEMI.2013.6743127

Filename

6743127