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Modulation mode recognition has always been a major subject for domestic and overseas research scholars engaged in the receiving processing of satellite signals. The paper analyzed the high-order cumulants, characteristic parameters, square spectrum and quadruplicate spectrum of 5 most common modulation modes used in satellite communication. Meanwhile, in consideration of the situation that the algorithm in engineering realization should not be too complex, a recognition algorithm of modulation mode which combines characteristic parameter and high-order spectrum. The simulation results showed that when signal to noise ratio was bigger than 10dB, the recognition rate of this method reached 97% without any requirement for priori knowledge.

A Blind Recognition Algorithm of Satellite Communication Modulation Mode Combining Characteristic Parameters and Quadruplicate Spectrum