Table 1.

Descriptions of existing two datasets used in experiments.

Data Sets		SSDD	HRSID
Polarization		HH, HV, VV, VH	HH, HV, VV
Image number		1160	5604
Ship number		2551	16,965
Image size (pixel)		500 × 500, etc.	800 × 800
Resolution (m)		1–15	0.5, 1, 3
Size of ships (nums)	Small	1529	9242
	Medium	935	7388
	Large	76	321