Journal of Communications
The estimation accuracy of antenna delay is one of the most important parameters for arraying combining performance in deep space network. The least squares estimation method of delays is presented, considering the geometric relation of delays estimated by cross-correlation, and theoretical analysis of the method is also presented. The complementary Kalman filtering method of delays is also presented, according to the different characteristics and inherent between delays and phase differences. Theoretical analysis and simulation results show that the two methods can both greatly improve the estimation accuracy of the delays.