Study Of Wavelet Method For VLBI Correlation Processing Of Satellite And Radio Source

Correlation processor is a key technical method in VLBI. Technology of interspaces observation not only includes satellite communication, radio astronomy and atomic clock's technique, but also sensitive to the advance of DSP and computer soft. With wavelet method of modern signal process domain ,the report carries out researching into wavelet method of correlation process of VLBI of satellite and radio resource . Bring forward idea of conformal transformation of wavelet analysis, put up reference frame of theory and researching way. The wavelet method has been called after 'math's microscope' in the field of DSP, but not meet with documents in VLBI correlation process. The paper mades research of application method, resolves broadband correlation process into orthogonal inner product of wavelet domain. Making use of characteristic of conformal transformation of wavelet , pick up characteristic of correlation phase. With optimization inner product of wavelet, analyzes broadband correlation process of VLBI of basing on FFT, come true quick speed algorithm.