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Apparatus for the remote detection of conducting bodies utilizing electromagnetic waveforms exhibiting abrupt discontinuities

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TLDR
In this paper, the transient components are processed serially and applied to a signal averager providing a number of channels the outputs from which correspond to the respective time average values of sequential portions of the transient wave form.
Abstract
In an apparatus for the remote detection of ore bodies, comprising means for radiating a primary electromagnetic waveform exhibiting abrupt discontinuities, means for discerning secondary signals induced in and reradiated from a conducting body together with transient components of such secondary signals, and means for sampling and examining the transient components, the transient components are processed serially and applied to a signal averager providing a number of channels the outputs from which correspond to the respective time average values of sequential portions of the transient wave form.

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