Location Key: VN = Vandenberg Air Force Base, California Updated Table of Radar Participation in GMD Intercept Tests Using Operationally-Configured Interceptors. (August 3, 2015)
KD = Kodiak, Alaska
KW = Kwajalein Atoll.
All times are local (either standard or daylight savings, whichever is in effect).
Kodiak is four hours behind east coast time.
Kwajalein does not use daylight saving time and is 17 hours ahead of EST and 16 ahead of EDT.
The table shows the launch locations and times (extracted from MDA press releases and news reports) for the seventeen intercept tests of both prototype and operationally-configured GMD ground-Based Interceptors (GBIs). Data for intercepts claimed as successful are in black and data in red is for failed intercept attempts. As the table shows, the latest interceptor launch time for a successful intercept is 3:19 pm local time (IFT-7). Taking into account the relative time and location of the target and interceptor launches, it is clear that all the successful intercept attempts took place with the target directly illuminated by the Sun.
There is one intercept attempt that clearly took place at night (IFT-10), in which the interceptor was launched at about 8:45 pm local time and in a direction generally heading away from the Sun. However, the intercept attempt failed when the kill vehicle failed to separate from the final booster stage.
Two other intercept attempts were conducted in which the interceptor launch would have occurred shortly before local sunset, IFT-13c and IFT-14. However, in both these cases, the interceptor failed to launch. Without knowing where the intercepts were planned to take place (and I haven’t tried to find out),one cannot be certain if the targets would have been sunlit, but give the targets’ launch locations (Kodiak) and typical intercept altitudes (250 km) in earlier tests, it seem likely they would have been.
–The PAVE PAWS radars in AK and MA are not yet part of the GMD system.
–Because of its location and orientation, Cobra Dane has never participated in a GMD intercept test.
–The BMEWS radars in Greenland and Britain are unable to observe GMD intercept tests.
Y = Transmitted data in real time to system.
F = Same as Y, but sensor experienced a failure.
O = Observed some part of test off-line. In the case of the Beale PAVE PAWS, participation may be limited to only observing part of the interceptor flyout.
N = Not used to observe test.