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Some of the free software mentioned here does not have detailed maps (or maps at all) or the ability to follow streets or type in street names (no geocoding). However, in many cases, it is also that which makes the program free (and sometimes open source [ 1 ] ), avoid the need of an Internet connection, [ 2 ] [ 3 ] [ 4 ] and make it very ...
WorldView-1 (WV 1) is a commercial Earth observation satellite owned by DigitalGlobe. WorldView-1 was launched on 18 September 2007, followed later by the WorldView-2 in 2009. [ 4 ] First imagery from WorldView-1 was available in October 2007, prior to the six-year anniversary of the launch of QuickBird , DigitalGlobe's previous satellite.
In 2007, the company was acquired by DigitalGlobe. GlobeXplorer's imagery and property data was licensed to many online information websites. GlobeXplorer obtained its content through online distribution relationships with about 30 of the world's top acquirers of aerial, satellite, and property data.
Previously, DigitalGlobe was only licensed to sell images with a higher resolution than 50 cm (20 in) to the U.S. military. [29] However, DigitalGlobe obtained permission, in June 2014, from the United States Department of Commerce, to allow the company to more widely exploit its commercial satellite imagery. The company was permitted to offer ...
WorldView-2 provides commercially available panchromatic imagery of 0.46 m (18 in) resolution, and eight-band multispectral imagery with 1.84 m (72 in) resolution. [ 4 ] It was launched 8 October 2009 to become DigitalGlobe's third satellite in orbit, joining WorldView-1 which was launched in 2007 and QuickBird which was launched in 2001. [ 5 ]
WorldView-3 (WV 3) is a commercial Earth observation satellite owned by DigitalGlobe.It was launched on 13 August 2014 to become DigitalGlobe's sixth satellite in orbit, joining Ikonos which was launched in 1999, QuickBird in 2001, WorldView-1 in 2007, GeoEye-1 in 2008, and WorldView-2 in 2009.
The system was delivered to Lockheed Martin in April 2012, [18] and was mated to the satellite bus the following month. [19] DigitalGlobe agreed to purchase GeoEye in July 2012, [20] and finalized the merger in January 2013. [21] At the time, each company had a satellite being prepared for launch: WorldView-3 and GeoEye-2.
QuickBird used Ball Aerospace's Global Imaging System 2000 (BGIS 2000). The satellite collected panchromatic (black and white) imagery at 61 centimeter resolution and multispectral imagery at 2.44- (at 450 km) to 1.63-meter (at 300 km) resolution, as orbit altitude is lowered during the end of mission life.
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