The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1992
Filed:
Mar. 05, 1990
Carl H Voegtly, Scottsdale, AZ (US);
James T Shaneyfelt, Gilbert, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A Digital Pulse Processor (DPP) designed to accept pulsed inputs and produce digital pulse descriptor word (PDW) outputs accepts pulsed signals from three adjacent channelized inputs. The DPP then derives a measurement of pulse amplitude from the peak value in the center frequency channel. The relative peak amplitudes between channels are used to establish aa fine frequency offset. The fine frequency offset is used in conjunction with coarse frequency inputs to compute a pulse frequency estimate. An internal counter generates a time reference for time of arrival (TOA) and pulse width measurements. The TOA and pulse width measurements are based on calculations to establish three dB points on the leading and trailing edges of the pulse. This pulse characterization information is produced in real time at the optimum signal-to-noise ratio, and is independent of incoming amplitude, rise/fall time, and pulse width. The pulse characterization information is accumulated and formatted into four 16-bit PDWs for output during the subsequent pulse processing period A RESET output is generated to mark the end of the pulse processing period, both for normal operation and for cases where a pulse is expected (based on normal input control) but is not detected.