OrbView Imagery

Description

The ORBIMAGE imagery donated by GeoEye and provided by GLCF is made available in its native format. An individual scene can be acquired in multispectral (4m), panchromatic (1m) or in stereo through multiple acquisitions (Figure 1). Table 1 details the specific wavelengths covered by each band. The acquisitions have been radiometrically corrected and are provided with satellite telemetry and post-processed GPS points for user orthorectification. The images are provided as GeoTIFF mosaics and should be compatible with most GIS, remote sensing and imaging software. The projection is UTM. All scenes are delivered as 8-bit (not 11-bit) files, for ease of use.

Figure 1. Global Biomass

Table 1: OrbView-3 Specifications

OrbView-3 Specifications
Imaging Mode	Panchromatic	Multispectral
Spatial Resolution	1 meter	4 meter
Imaging Channels	1 channel	4 channels
Spectral Range	450 - 900 nm
		450-520 nm
		520-600 nm
		625-695 nm
		760-900 nm
Swath Width	8 km
Image Area	User Defined
Revisit Time	Less than 3 days
Orbital Altitude	470 km
Nodal Crossing	10:30 A.M.
System Life	Minimum 5 years

The Global Land Cover Facility also appreciates the donation of imagery by GeoEye for the tsunami assessment effort (Figure-2). All users should be aware that this quality imagery does not usually have free access, and that GeoEye are generous in their gift.

Figure 2.Imagery overview of the immediate aftermath of the tsunami in Sri Lanka.