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2. Reconnaissance satellite - Wikipedia

   en.wikipedia.org/wiki/Reconnaissance_satellite

   On 16 March 1955, the United States Air Force officially ordered the development of an advanced reconnaissance satellite to provide continuous surveillance of "preselected areas of the Earth" in order "to determine the status of a potential enemy’s war-making capability".

3. Virtual globe - Wikipedia

   en.wikipedia.org/wiki/Virtual_globe

   Terravision installation at NTT InterCommunication Center, 1998.. In 1993 the German company ART+COM developed a first interactive Virtual globe, the project Terravision; supported by the Deutsche Post as a "networked virtual representation of the Earth based on satellite images, aerial shots, altitude data and architectural data".

4. Baidu Maps - Wikipedia

   en.wikipedia.org/wiki/Baidu_Maps

   Baidu Maps is a desktop and mobile web mapping service application and technology provided by Baidu, offering satellite imagery, street maps, street view (which is called "Panorama" – zh:百度全景) and indoor view perspectives, [1] as well as functions such as a route planner for traveling by foot, car, or with public transport.

5. Indian Regional Navigation Satellite System - Wikipedia

   en.wikipedia.org/wiki/Indian_Regional_Navigation...

   The Indian Regional Navigation Satellite System (IRNSS), with an operational name of NavIC (acronym for Navigation with Indian Constellation; also, nāvik 'sailor' or 'navigator' in Indian languages), [2] is an autonomous regional satellite navigation system that provides accurate real-time positioning and timing services. [3]

6. Web Mercator projection - Wikipedia

   en.wikipedia.org/wiki/Web_Mercator_projection

   The standard style for OpenStreetMap, like most Web maps, uses the Web Mercator projection. Web Mercator, Google Web Mercator, Spherical Mercator, WGS 84 Web Mercator [1] or WGS 84/Pseudo-Mercator is a variant of the Mercator map projection and is the de facto standard for Web mapping applications. It rose to prominence when Google Maps adopted ...

7. Galileo (satellite navigation) - Wikipedia

   en.wikipedia.org/wiki/Galileo_(satellite_navigation)

   Map projection; Reference ellipsoid; Satellite geodesy; ... 2.3 cm) when using real-time corrections for satellite orbits and clocks. ... Satellite body dimensions: 2 ...