Parameter estimation algorithm based on AR power spectrum and STFT for hybrid modulation signals
Lin Cai-yon · Radar & Ecm · 2013
A parameter estimation algorithm is proposed based on the AR power spectrum and the Short Time Fourier Transform(STFT) for new FSK / PSK hybrid modulation signals.The hybrid signals can be split into the independent Costas signals,and then the modulation parameters of the signals are estimated.The original SNR of the signals can also be kept,even though the square preprocessing is not done.The simulation results indicate that the algorithm with small amount of calculation and high estimation precision is close to the Cramer-Rao lower bound.