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Russia and Image Intelligence

Between 1962 and 1994 the USSR/Russian Federation placed more than 800 photo reconnaissance spacecraft into Earth orbit on dedicated military missions (another 25 spacecraft were lost in launch failures). These missions have ranged in length from only a few days to more than 400 days, a record set by Kosmos 2267 in 1994. Only seven dedicated military photo recons were launched during each of 1993 and 1994. However, on average more than two spacecraft were operational during the entire period, and no observation gaps appeared (Figure 6.2). Declassified photographs with resolutions of 2-30 m can now be purchased commercially, while resolutions on the order of one-third meter have been acknowledged.

Since the first Soviet photo spacecraft was successfully orbited (Kosmos 4 in 1962), a variety of specialized spacecraft have been developed. Today, four basic classes of the 6-7 metric-ton photo recons are operational, and a possible new generation spacecraft began flight testing in the second half of 1994 (Figure 6.3). All such spacecraft are now launched by the Soyuz-U/U2 launch vehicle from either the Baikonur or Plesetsk Cosmodromes. Whereas most spacecraft physically return film to Earth for development and processing, some, longer duration spacecraft possess either digital transmission or dual transmission/capsule capabilities.

Unlike many satellites designed to photograph the Earth, Russian photo recons fly in posigrade (normally 63 degree-83 degree) orbits rather than sun-synchronous trajectories. Consequently, when altitude restoration maneuvers are made every 7-10 days, the satellite's argument of perigee is normally adjusted to keep perigee phased with acceptable lighting conditions. For example, during a typical 2-month mission, the argument of perigee will be rotated progressively from ascending passes (first month) to descending passes (second month). Fifth-generation satellites are an exception with arguments of perigee normally maintained between 80 degrees and 110 degrees.


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