Abstract : LONG TERM GOAL. Our long-term goal is to provide a robust suite of algorithms capable of performing real-time localization of both isolated and grouped ferromagnetic targets. It is intended that these algorithms be applicable to any tensor magnetic gradiometer system used for surface or subsurface platforms. These algorithms will be most robust when used in conjunction with conventional navigational systems, but will also be provided with a self-navigating capability that exploits the magnetic fields and gradients of the sources being localized.