2013-03-18
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Sandia engineer Steve Yearout displays a 1/15 scale model of a NAVSTAR Block IIR GPS satellite: “Sandia sends sensors into space to detect nuclear blasts globally”. (Google cache; via.)
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SatTrack Cam Leiden (via iamdanw):
In the evening of June 25 I by chance captured a GPS satellite that was decommisioned last year on photograph: Navstar 39 (USA 128, GPS 2A-27, 1996-056A). It showed up as a very bright small trail and was flashing at a rate of 2-3 flashes per 10 seconds.
2012-05-25
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Navstar by San Diego Air & Space Museum Archives on Flickr:
Providing continuous global coverage in all weather, the NAVSTAR Global Positioning System will give suitably equipped users three-dimensional positioning and velocity information and a precise timing reference in real time. Besides routine navigation, possible applications include search-and-rescue operations, land and aerial rendezvous, and geodetic surveys.
This Rockwell International promotional image presumably predates the launch of the first NAVSTAR satellite in 1978.
