THE SECRET SPIES IN THE SKY - Imagery, Data Analysis, and Discussions relating to Military Space
SatTrackCam Leiden (Cospar 4353) is a satellite tracking station located at Leiden, the Netherlands. The tracking focus is on classified objects - i.e. "spy satellites". With a camera, accurate positional measurements on satellites of interest are obtained in order to determine their orbits. Orbital behaviour is analysed.
Tuesday, 10 October 2006
Some spysat orbital constellation plots (KH-12 Keyhole, Lacrosse and IGS)
Plots of the orbit constellations of the American KH-12 Keyhole optical imaging satellites and Lacrosse (Onyx) synthetic aperture radar satellites, and the Japanese IGS optical and radar satellites.
(see here for details on how the plots were made and additional plots)
(click images to enlarge)
This plot shows how the IGS satellites keep an eye on North Korea: