Importance

Loading Importance Indicators...

Abstract

This invention relates to receive electronics of a metal detector for processing a received signal from a target in a soil, the receive electronics including: processing electronics for synchronous demodulating or sampling the received signal to produce at least two substantially ground balanced signals; processing electronics for processing the at least two substantially ground balanced signals to produce at least two substantially ground balanced processed signals, a first substantially ground balanced processed signal being more indicative of a spread of a time constant density spectrum of the received signal than a second substantially ground balanced processed signal, and the second substantially ground balanced processed signal being more indicative of an average time constant of the received signal than the first substantially ground balanced processed signal; and processing electronics for processing the at least two substantially ground balanced processed signals to produce an output signal indicative of at least the spread of the time constant density spectrum.

Loading the Abstract Image...

First Claim