Synthetic Aperture Radar Image Background Clutter Fitting Using SKS + MoM-Based Distribution

Table 3

The KL divergence values of nine models fitting six clutter regions.

Parameter models	Clutter regions
	1	2	3	4	5	6
MoM-based lognormal	0.3289	0.2730	0.1077	0.1708	0.2817	0.1059
MLE-based lognormal	0.1143	0.0449	0.0349	0.1503	0.2740	0.1072
MoM-based gamma	0.0333	0.0928	0.0585	0.0599	0.1517	0.1307
MLE-based gamma	0.0232	0.3943	0.0807	1.4981	1.7516	0.5517
MoM-based	—	—	0.0216	—	—	—
Freitas’ MoM-based	0.0333	0.0928	0.0585	0.0599	0.1517	0.1307
Fully parametric MoM-based	—	—	0.0258	—	—	0.0886
SKS-based	0.0055	0.0952	0.0133	—	—	0.0707
SKS + MoM-based	0.0132	0.1830	0.0630	0.0081	0.0947	0.0577