Cross-spectral method based on 2-D cross polynomial transform for 2-D chirp signal parameter estimation

In this paper, the cross-spectral music method based on 2-D cross polynomial transform for 2-D chirp signal parameter estimation is presented. We define the 2-D cross polynomial transform, and then we do cross-correlation of the two signals which are the results of the transform, last we use music method to do the parameter estimation of 2-D chirp signal. The method we propose can not only work in the white Gaussian noise background, but also in the colored Gaussian noise background. Compared with the traditional 2-D polynomial phase difference operator, this method is more effective. The simulation results demonstrate it.