Method for estimating power spectral density in pulsed carrier phase noise measurements

To improve the performance of power spectral density estimation used in pulsed carrier phase noise measurement,the mathematical model of phase noise is established,the relation between phase noise and power spectrum of noise is analyzed,and a power spectral density estimation method based on the Welch method is developed.According to this method,the scheme for the data segment and the length of the window function are determined by the pulsed modulation parameter of the measured signal.Simulation results show that the proposed method has better performance on spectrum estimation than the existing ones.