Filtering system for processing signature signals

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type

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367 41, 367 43, 364421, 364602, 364724, 364728, G01V 100, G06J 100, G06F 1534

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active

046866558

ABSTRACT:
A filtering system is provided for acquiring and processing signals using a sampled filter for signal separation and signal enhancement; such as for determining locations, distances, and times in a geophysical exploration system. Signature signals permit mixing and seperation with sampled filters, such as for sharing common circuitry and for increasing the amount of acquired information. A sampled filter, such as a digital correlator, is provided for generating high resolution output data in response to low resolution input data processed with low resolution computational circuits. A real-time time-domain correlator is provided with single-bit resolution computational elements to provide improved correlation filtering. A high speed real-time correlator is provided to enhance signals with compositing-after-correlation and with correlation using a plurality of correlation operators.

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