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US 4,794,543 AGranted
Multi level split gate signal processor determining the centroid of a signal
AssigneeHazeltine Corporation
InventorsMohammed Enein, Everett P. Strickland
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Abstract
Successive MLS scanning signals are received as pulse-type analog signals and converted into corresponding digital signals. The centroid of each digital signal is determined at at least two different levels below the peak of the digital signal. The centroids for each signal are averaged, whereby the average represents the centroid of the corresponding received pulse-type signal.
Claims3
Apparatus for determining the centroid of a received pulse-type signal, said apparatus comprising:
- (a) means for detecting the received signal;
- (b) means for converting the detected signal into a corresponding digital signal;
- (c) peak detection means for detecting the peak amplitude represented by said digital signal and for developing an output signal representative thereof;
- (d) first threshold detection means, responsive to the output of said peak detection means, for determining the centroid of the digital signal with reference to a first predefined amplitude level below the peak level of the digital signal;
- (e) second threshold detection means, responsive to the output of said peak detection means, for determining the centroid of the digital signal with reference to a second predefined amplitude level below the peak of the digital signal;
- (f) means for averaging the centroids determined by said first and second threshold detection means whereby the averaged centroids represent the centroid of said received pulse-type signal.
3 more elements
Dependencies are inferred from the claim text.