Development of Time Delay Estimation of Gaussian Signal in Non-Gaussian Spatially Correlated Noise
Qi Chen, Pla Uni · Journal of PLA University of Science and Technology · 2003
A new hybrid approach to solve the time delay estimation of Gaussian signal in the presence of unknown non-Gaussian spatially correlated noise has been proposed. First, the fourth-order statistics of the measurments, thus those of the non-Gaussian noise are estimated; then the second-order statistics of the noise are computed by statistics projection; finally, cross-correlation based approaches are used to estimate time delay parameter. The results of the simulation examples are then compared with the results of the hybrid approach based on the second-order and three-order statistics, which shows that this approach has superiority.