Patent ID: 7629790

Claim:
A system for the electronic detection of military threats, comprising: an electromagnetic (EM) gradiometer for detecting secondary EM waves scattered from objects illuminated by a primary EM wave existent in a local area; a right magnetic dipole antenna and a left magnetic dipole antenna included in the EM gradiometer for receiving said secondary EM waves and able to reject said primary EM wave; a synchronizer able to provide a reference signal to the EM gradiometer derived from said primary EM wave; a processor for synchronous detection able to make measurements of the phase and amplitude of said secondary EM waves; and a graphical user interface (GUI) for displaying information about the location of objects assessed to be threats in said local area that were computed from said measurements of the phase and amplitude; wherein a vehicle may be used for transporting the EM gradiometer over said local area during periods said objects are being radio illuminated.