Title :
Study of the Application of the Multiple-Channel Maximum Entropy Method
Author :
Xiong Ying ; Cheng Yu
Author_Institution :
Sch. of Comput. Sci., Hubei Univ. of Technol., Wuhan, China
Abstract :
As a modern analysis method of frequency spectrum, due to a high resolution of frequency and phase from a short sequence of data, the Multiple-channel Maximum Entropy Method (MMEM) has been widely used in the field of signal processing. After mentioning a mathematic model of quasiuniform waves, this paper displays a method of deriving some important parameters of quasi-uniform waves by MMEM. As an example, in order to prove the effectiveness of the method, some experiments have been carried out with the data from the Digisonde 256 at Wuhan Ionospheric Observatory. In comparison with the Basic Period Diagram method, MMEM has been demonstrated to excel in dealing with short sequences. That means that the present method is very useful in experimental investigation of ionospheric disturbances.
Keywords :
entropy; fast Fourier transforms; ionospheric disturbances; signal processing; spectral analysers; basic period diagram method; frequency high resolution; frequency spectrum analysis method; ionospheric disturbances experimental investigation; mutiple channel maximum entropy method; quasi uniform waves mathematic model; quasi uniform waves parameter; signal processing; Application software; Computer science; Entropy; Mathematical model; Mathematics; Signal analysis; Signal processing; Signal resolution; Time frequency analysis; Virtual manufacturing;
Conference_Titel :
Information Engineering and Computer Science, 2009. ICIECS 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4994-1
DOI :
10.1109/ICIECS.2009.5363070
