A method for detecting electrically conductive objects under a ground surface for detecting unexploded ordnance through the use of a plurality of excitation coils (1, 11, 21, 31, and 41) for transmitting electromagnetic pulses into the ground over an area (F, f) exactly determined based on geo-coordinates or location coordinates, where a plurality of 3D receiver coils are used to measure an electromagnetic pulse response, which is emitted in reaction to the electromagnetic pulses due to eddy currents in a metallic object, the method comprising: generating a primary electromagnetic field, whose magnetic main axis is oriented along the z axis of a Cartesian coordinate system (x, y, z) by the plurality of excitation coils (1, 11, 21, 31, and 41) extending in an x-y plane of said Cartesian coordinate system, where the plurality of 3D receiver coils are used as receivers, which are used distributed in the x-y plane of the excitation coils (1, 11, 21, 31, and 41) for simultaneous and mutually independent electrical recording each local pulse response at the location of each 3D receiver coil, storing and/or evaluating the respective pulse responses with their decay behavior in the three spatial axes (x, y, z) with exact detection of the current location coordinates, where the plurality of excitation coils (1, 11, 21, 31, and 41) are used arranged in two rows, where the coils (1, 11, 21, 31, and 41) in each row are arranged directly adjacent to one another; these rows are arranged so that they only partially overlap in said x-y plane, and where the excitation coils (1, 11, 21, 31, and 41) are activated in a staggered fashion relative to one another, and the excitation coils (1, 11, 21, 31, and 41) and the 3D receiver coils are moved as a unit, and where 3D receiver coils are situated in the x-y plane inside and outside the excitation coils (1, 11, 21, 31, and 41). generating a primary electromagnetic field, whose magnetic main axis is oriented along the z axis of a Cartesian coordinate system (x, y, z) by the plurality of excitation coils (1, 11, 21, 31, and 41) extending in an x-y plane of said Cartesian coordinate system, where the plurality of 3D receiver coils are used as receivers, which are used distributed in the x-y plane of the excitation coils (1, 11, 21, 31, and 41) for simultaneous and mutually independent electrical recording each local pulse response at the location of each 3D receiver coil, storing and/or evaluating the respective pulse responses with their decay behavior in the three spatial axes (x, y, z) with exact detection of the current location coordinates, where the plurality of excitation coils (1, 11, 21, 31, and 41) are used arranged in two rows, where the coils (1, 11, 21, 31, and 41) in each row are arranged directly adjacent to one another; these rows are arranged so that they only partially overlap in said x-y plane, and where the excitation coils (1, 11, 21, 31, and 41) are activated in a staggered fashion relative to one another, and the excitation coils (1, 11, 21, 31, and 41) and the 3D receiver coils are moved as a unit, and where 3D receiver coils are situated in the x-y plane inside and outside the excitation coils (1, 11, 21, 31, and 41).