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Project 6,1 - Accurate Location of Electromagnetic Pulse Source =
BE. A. Lewis
ORIEOTIVE
To utilize the electromagnetic signal originating from nuclear
weapon detonations to determine ground zero of detonation,
Second-
arily to obtain the yield data that is available in the bomb pulse.
PROCEDIRE
Location of Ground Zero is made by use of an inverse Loran
principle,
The exact time the *omb pulse is received at various
stations is recorded.
The exact time difference in receipt of the
electromagnotic pulse between two stations will be used to determine
a hyperbolie curve which runs through grcund zero.
The point of
intersection of two or more curves determines ground zero,
There are two systems.
One of the systems is known as the long
. base line system and the other, the short base line sistem.
tem has two sets of stations,
Each sys~.
The long base line has one set of sta-
tions located in the Hawaiian Islands (Midway, Palmyra anj Maui) with
synchronizing antenna station at Haiku, Maui, and the other set of
Stations in the States (Narlingen, Texas; Plytheville, Arkansas; Kinross, Michican ani Rome, New York) with synchronizing antenna station
at Cape Fear, North Carolina.
The short base lines have one set of
stations located in the Hawaiian area (Kona, Hawaii; Papa, Hawaii; and
Red 4411, Maui) the other set in California (Pittsburg, Woodlani, and
Maryville).
COPIED/DOE .
LANL RC
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