= a.) me Project 6.1 - Accurate Location of Flectromagnetic Pulse Source Dr. F. A. Lewis 22" To utilize the electromenetic signal originating from nuclear woupen Jetonations t> determine gro! gers of fetonation, to obtain the ylel-: Secondarily jata that 15 availatl. in the tomb ~ulse. Proc™ron Location 2% proun? zero is made ty use 2f an inverse Loran principle. The exact tire the bomb pulse is receivei i¢ wariou- stations is recorded. The exact tine difference in receipt of the el]: ttromgn tic pulse be» tween tic riatione .11] he use! to detervine a hyperbolic curve which runt thee ch ground zors, The point of intersection of two or more curves detormines ground zero. There are two systems. “ne of the systems 12 mown as the long base line system an? the othe-, «h- short base line system. ha- two acts 2f stations, Yach system The long bas- line has one set of stations leeated in the Havaifan Islants (Miiwa;, Paleyra ant “oul) with synchro nizing anten-a stetic- at “adieu, Mauf, n' the other ert of stations in the States (Harlingen, Texacsy Blytheville, Arkansas; “inroas, Michigan, and Rome, Yew York) with synchronizing antenna station at Cape Year, North Carolina, The shert hase lines huve one set of stations Iocated in the Hawaiian area (Nona, Hawaii; Papa, Hawali; and ed Hill, Msul) the other set in “aldforaia (Pi'tsburp, Wordlani, and Maryville), RFSULT note3 Short bass dine Hawaii, , BEST AVAILS SLE COPY Kona net all stations reccived and recoried electromagnet! ic pulse emanating from homb detonation. -T7- Le -

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