Thursday, October 08, 2009

Eyes in the Sky

With the launch of WorldView-2, the newest high resolution sensor, today Oct 8, 2009, GIS practitioners now have several choices for commercial half-metre imagery. WorldView-2 will acquire 46cm (panchromatic) and 1.84m (multispectral) imagery. The GeoEye-1 sensor, launched on Sep 6, 2008, provides 41cm (panchromatic) and 1.65m (multispectral). And WorldView-1 launched on Sep 18, 2007 provides 50cm imagery. One can actually see/ interpret people on these half-metre images (not faces yet, that's just in Enemy of the State). There's also the "lower" resolution, and more affordable, 1-metre resolution QuickBird and IKONOS imagery suitable for a variety of tasks. Even though the newer sensors can technically provide 41/46cm resolution images, non-US Government orders are limited to 50cm resolution. For customers in the West Indies, the official agents for the satellite companies, GeoEye and DigitalGlobe, are located in Trinidad and Barbados, respectively.

No comments: