Convergence Analysis of EFOP Estimate Based on Frequency Domain Smoothing

Table 1

Estimation error for 3 methods under different noise variances.

Noise variance	0.1	0.4	0.7	1.0	1.3	1.6	1.9
Estimate error of ETFE smoothing	23.34	25.62	27.14	32.86	38.27	41.31	66.48
Estimate error of cross-spectral method	12.23	13.43	16.83	17.32	21.56	25.87	29.89
Estimate error of EFOP smoothing	9.88	10.68	13.14	13.96	16.67	20.86	24.79