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

Table 2

The K-S test values of nine parameter models fitting six clutter regions.

Parameter models	Clutter regions
	1	2	3	4	5	6
MoM-based lognormal	0.0674	0.0955	0.0471	0.0454	0.0471	0.0403
MLE-based lognormal	0.0601	0.0319	0.0315	0.0528	0.0780	0.0455
MoM-based gamma	0.0223	0.0432	0.0331	0.0270	0.0397	0.0560
MLE-based gamma	0.0423	0.1478	0.0564	0.2561	0.3090	0.1585
MoM-based	—	—	0.0150	—	—	—
Freitas’ MoM-based	0.0223	0.0432	0.0331	0.0270	0.0396	0.0560
Fully parametric MoM-based	—	—	0.0175	—	—	0.0358
SKS-based	0.0101	0.0472	0.0186	—	—	0.0381
SKS + MoM-based	0.0151	0.0852	0.0397	0.0203	0.0257	0.0333