A Time-Delay Estimation Method against Correlated Noise

To resolve the problem that the correlated noises contained in the signals affect the accuracy of the time-delay esti- mation, a new time-delay estimation method which can suppress the correlated noises is proposed in the framework of generalized cross correlation(GCC). The new method estimates the magnitude spectrum of the noises in the noise phase, then a adaptive pre-filter is constructed with the magnitude spectrum of the noise and signal, which can sup- press the correlated noises. The new method can obtain the correct time-delay estimation through pre-filtering the incoming signal before to calculate the correlated function. The experiment shows that the method effectively sup- press correlated noise impact on time-delay estimation.