Time Delay Estimation for Chirp Signal
Qiang Fang · Dianzi Ke-ji Daxue xuebao · 2007
Time difference of arrival is an important passive location method which been widely used in practice.But its precision depends on time delay estimation.In this paper,the cyclostationary characteristic of chirp signal is studied and the time delay estimation method is carried out based on the correlated cyclic cross-correlation. The time delay is precisely estimated due to noise suppression of the method.Computer simulations results shows that the performance of the new method is better in noisy circumstance than the conventional generalized cross-correlation method.