Accuracy Improvement of Background Noise Estimation in ELF Environment Electromagnetic Wave Using TPE-AE

2018 ◽  
Author(s):  
Kouta Sugiura ◽  
Akitoshi Itai
Keyword(s):  
Electromagnetic Wave ◽  
Background Noise ◽  
Noise Estimation ◽  
Accuracy Improvement

scholarly journals Background noise estimation of the geomagnetic signal

2018 ◽  
Vol 7 (3) ◽  
pp. 189-193
Author(s):  
Xiuyi Yao ◽  
Suqin Zhang ◽  
Yuntian Teng ◽  
Dongmei Yang
Keyword(s):  
Fourier Transform ◽  
Diurnal Variation ◽  
Spectrum Analysis ◽  
Geomagnetic Field ◽  
Background Noise ◽  
Residual Error ◽  
Noise Estimation ◽  
Estimation Result ◽  
Polynomial Degree ◽  
Main Component

Abstract. A fast Fourier transform was applied to fit the geomagnetic diurnal variation. Fitting results showed that when the polynomial degree was greater than 160, the residual error was close to 0 nT. White noise is the main component of the residual error when the polynomial degree was greater than 160, so this method was adopted to calculate the background noise of the geomagnetic field. Spectrum analysis further demonstrated that the noise estimation result is reliable.

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