Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1998-12-02
2000-09-05
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
G01C 308
Patent
active
061151130
ABSTRACT:
A method and apparatus is provided for detecting a pulse in a signal. In one aspect of the invention, a method comprises digitizing the signal into a plurality of samples; repeatedly convolving each one of at least a portion of the buffered samples R times, wherein R>1; and detecting the received signal's center of energy from the convolution results. In a second aspect, an apparatus comprises a analog-to-digital converter capable of digitizing the received signal to produce a plurality of samples; a convolution circuit, including a matched filter for convolving the digitized signal at a second sampling rate; a buffer capable of storing the samples and serially outputting each of the samples R times, where R>1, to the convolution circuit; and a detector for detecting the digitized signal's center of energy from the output of the convolution circuit.
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Buczinski Stephen C.
Lockheed Martin Corporation
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