EURASIP Journal on Advances in Signal Processing

Table 1 Time delay estimation for GCC, PHAT, ML, and EMD–ML

From: An LBL positioning algorithm based on an EMD–ML hybrid method

SNR/dB	GCC		PHAT		ML		EMD–ML
SNR/dB	Average error/s	RMSE	Average error/s	RMSE	Average error/s	RMSE	Average error/s	RMSE
5	0.265	3.090	0.119	0.653	0.201	2.690	0.076	0.968
10	0.198	2.324	0.082	0.603	0.248	3.020	0.028	0.322
15	0.123	1.344	0.038	0.279	0.176	2.131	0.013	0.421
20	0.046	0.450	0.021	0.283	0.050	0.520	0.012	0.181
25	0.004	0.044	0.005	0.003	0.012	0.128	0.027	0.387
30	0.001	0.013	0.001	0.002	0.001	0.015	0.031	0.439

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