Ferrets Above: American Signals Intelligence Satellites During the 1960s

@article{Day2004FerretsAA,
  title={Ferrets Above: American Signals Intelligence Satellites During the 1960s},
  author={Dwayne A. Day},
  journal={International Journal of Intelligence and CounterIntelligence},
  year={2004},
  volume={17},
  pages={449 - 467}
}
  • D. Day
  • Published 1 September 2004
  • Political Science
  • International Journal of Intelligence and CounterIntelligence
Beginning in 1995 the National Reconnaissance Office (NRO) began declassifying significant amounts of information about its photographic intelligence satellites. But the NRO has released very little information on its early signals intelligence satellites. Although the NRO declassified the ex i s t ence of the Navy-bu i l t GRAB sate l l i t e in 1998 , fur ther declassifications and even documents concerning GRAB have not been forthcoming. Because of this, the study of early signals… 
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