Title :
Distortion of Correlation Analysis Caused by Identical Frequency Interference
Author :
Xin, Fan ; Feng, Han ; Litao, Liang ; Shiming, Gan
Author_Institution :
Inner Mongolia Univ. of Technol., Hohhot
Abstract :
Correlation analysis is an important method in signal processing. However, the process and mechanics that the identical frequency interference makes the correlation analysis distorted are not well understood because the expression of correlation function itself is perfect in terms of mathematics. The work carried out an investigation deep into the essence of correlation analysis, proposed a signal model that makes the mechanics of identical frequency interference clear and the experiments for further study being possible. The experimental investigations come to a conclusion that the interference may bring considerable impacts on the distortion, and it may reach as large as 100% or even more.
Keywords :
correlation methods; interference (signal); signal processing; correlation analysis; correlation function; identical frequency interference; signal processing; Cause effect analysis; Distortion measurement; Frequency measurement; Harmonic analysis; Information analysis; Instruments; Interference; Mechanical variables measurement; Performance analysis; Signal analysis; Correlation analysis; Correlation coefficient peak; Identical frequency interference; Relative errors; Signal model;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4350492
