Site Testing for EMP (Electromagnetic Pulse) Hardness

To answer questions about EMP hardness of shock-hardened sites, one might employ an electromagnetic diagnostic testing procedure. An idealized procedure is presented as a model for more realistic tests. The procedure is to determine the Green's or Transfer function of the site using infinitesimal electric and magnetic dipole oscillators. The Green's function is comprised of the set of measured electric and magnetic fields when the oscillators are operated at each point, with each orientation and frequency. It is shown how the fields within the site are predicted, given knowledge of the currents in air producing the EMP, or the tangential components of the fields on the earth's surface.