Table 2.

Differences between the estimated templates in successive iterations and estimated noise variances.

iteration k	${\Vert J^{\left(k+1\right)}-J^{\left(k\right)}\Vert }_2^2$	σ(k)
0	29.7629	1.0000
1	228.3461	8.5799
2	232.6406	22.1642
3	13.7406	27.1063
4	0.3902	24.5795
5	0.1638	23.8118
6	0.0776	23.6478
7	0.0036	23.5560
8	0.0014	23.5726
9	0.0003	23.5772