TAC ES Project 6,1 - ACCURATE LOCATION OF ELECTROAG@ETIC PULSE SOUnCE ~ Dr, E, A. Lowis OF BJzCrivs To utilize the electronagnetic signal originating from nuclear weapon detoa nations cb a to Jzteraine ground zero of dztonstion, Szcendarily to obtein the yield data that is available in the bocb julse, PROCEIURE Location of Ground Zero is made by use of an inverse Loran principle, exact time the bomb pulse is received at various stations is recorded, The The exact tine difference in receipt of the clectronagnetic pulse between tivo st atteons will be used to ¢C:terinine a hyperbolic cuve «hich iuns thercugh grouad tere. The point of Irtersection of two or rore m7 2.35 Seter Aces ground rerio, TrerZ -,e ros, * 7s, F.2 of “he ~ 3 23! eystena end the other, the shu:t bese line tystem, .tatilus, mag tie te 4° Sach system has to 2 7443 -2ts of The long Lrse Jing hes «.e@ 2b of ststt.us Necated Jn the Eavaetian Tstaris (itcay, Paljva end Maui) sth -,achoscirtng cntenna station at Hattu, Maui, and the other set of stations in the States (Harlingen, Texas; Blytheville, Avkansas3 Kimvoss, Michigan end Ro-e, New York) with synehrooizing oo So anterra station Rocated in the Hawaiian area (Kona, He.2ii; Papa, Hadi; and Red Eill, Maui) the ther set in Califorsia (Pittsburg, Woodland, +: ville) 1. Short base line in Hawaii recorded bomb pulse. 2, Shout base line in California vscorded 3. Long base line in Hewaii recorded bomb pulse, bomb pulse.