Time Delay Estimation Using Windowed Differential agnitude of Cross Correlation and Its Hilbert Transform
Xinxin Ouyang, Lai-yuan Luo, Jinyu Xiong · Procedia Engineering · 2012
A method is proposed for estimating time delay between MFSK signals received at two spatially separated sensors. onsidering the periodical characteristic of the peaks of cross correlation, the proposed method combines window echnology and differential magnitude between cross correlation and its Hilbert transform. The time argument at hich the differential magnitude achieves the peak in the range of window is the delay estimate. The method is ompared with several other methods. Simulation results show that the proposed method can get better performance. nder certain conditions the performance of proposed method can be better than CRLB by using priori information bout the transmitter and receivers.