US PATENT SUBCLASS 367 / 100
.~.~ With correlation or matched filtering


Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

87  DF  ECHO SYSTEMS {6}
99  DF  .~ Distance or direction finding {5}
100.~.~ With correlation or matched filtering


DEFINITION

Classification: 367/100

With correlation or matched filtering:

(under subclass 99) Subject matter in which the degree of similarity between the transmitted and received signals is

measured by multiplying the signals together and integrating the result, or in which a waveform of known shape is separated from random perturbing noise by optimal filtering.