Advantage of Combining OBIA and Classifier Ensemble Method for Very High-Resolution Satellite Imagery Classification

Table 2

Sensor parameters of GF-1 and GF-2 satellites.

Parameters			PAN/multispectral
			GF1	GF2
Satellite	Orbit type		Sun synchronization	Sun synchronization
	Orbit altitude		646 km	631 km
	Repeat time		41 days	69 days
Spectral range	Panchromatic		0.45–0.90 μm	0.45–0.90 μm
	Multispectral	Blue	0.45–0.52 μm	0.45–0.52 μm
		Green	0.52–0.59 μm	0.52–0.59 μm
		Red	0.63–0.69 μm	0.63–0.69 μm
		NIR	0.77–0.89 μm	0.77–0.89 μm
Spatial resolution	Panchromatic		2 m	1 m
	Multispectral		8 m	4 m
Width			60 km	45 km
Receive time			2015-07-14	2015-7-3
Orbit ID			11937	5113
Product type			Standard	Standard
Product level			Level 1A	Level 1A
(Path, row)			(3, 97)	(3,152)
(Width, height)			(4548, 4544), (18192, 18164)	(29200, 27620)
Cloud			0%	5%
Solar(azimuth, zenith)			(141.278, 73.7496)	(134.537, 21.6698)
Satellite(azimuth, zenith)			(297.354, 88.3146)	(283.342, 83.754)