Very High Resolution Satellites
Launched on Sep 6, 2008, GeoEye-1 can collect images with a ground resolution of 0.41 metres in panchromatic mode and at 1.65 metres for multispectral mode. GeoEye-1 offers three metre geolocation accuracy, which means that customers can map natural and man-made features to within 3 metres of their actual location.
On 24 September 1999, a new era in satellite remote sensing started with the successful launch of Space Imaging’s IKONOS satellite. IKONOS was the world's first high-resolution commercial satellite to offer 1-metre Earth imagery. DigitalGlobe advises that the IKONOS mission will be ended sometime in 2015.