Estimation Method for Weighted Fractional Fourier Transform Signal Parameters
Weighted fractional Fourier transform(WFRFT)signal has the feactures of anti-interception and anti-modulation rec-ognition,and it is widely used in hybrid carrier communication.At present,most researches are applied in the application and charac-teristic analysis of hybrid carrier,but less in the parameter estimation of WFRFT.In order to solve the problem of unknown parame-ters in non-cooperative communication scenarios,a WFRFT parameter estimation theory based on Shintaro_K eigenvalue is pro-posed.Firstly,the parameters are accurately estimated the Shintaro_K value of the minimum reception signal through theoretical derivation,and then inproving the parabola search algorithm to search the minimum value of the Shintaro_K eigenvalue.The simula-tion results show that the WFRFT parameter estimation theory is effective and reliable,and the method has similar parameter estima-tion accuracy compared with the existing methods,but with less search times and computational complexity.
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