Originally published in 1999, America's Space Sentinels won the
American Astronautical Society's prestigious Eugene Emme
Astronautical Literature Award and quickly established itself as
the definitive book for understanding a crucial component of our
national defense capabilities. It focused on the emergence and
evolution of the Air Force's Defense Support Program (DSP)
satellite system, which came on line in 1970 and continued to
perform at a high level through the turn of this century and
beyond.
For this new edition, Jeffrey Richelson covers significant
developments during the last dozen years relating to the deployment
of these satellites, especially the struggles to develop and launch
the follow-on Space-Based Infrared System (SBIRS), beginning in the
late 1990s and continuing up to the present. The result is a book
that remains the first and best source of information regarding
these vital programs.
As Richelson notes, SBIRS, like its aging but still functioning
predecessor, has been designed primarily to provide instant early
warning of missile launches from around the globe-particularly
China, Russia, North Korea, Pakistan, India, and Iran-through the
infra-red sensors carried on each satellite. But the new
system-beset by hardware, software, fiscal, and political
problems-has only managed to move forward in fits and starts. While
it has done so, the DSP system has continued to monitor the skies
above the earth; two key ground stations in Australia and Germany
have closed; nuclear powers Russia and the United States conferred
extensively over the so-called Y2K problem (concerned that a
computer malfunction might produce false alarms of a missile
attack); and worries over potential launches from nations perceived
as hostile to American interests have increased
substantially.
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