Accession Number : ADD015590

Title :   Shipboard Sensor Exerciser Apparatus.

Descriptive Note : Patent, Filed 1 Apr 83, patented 11 Aug 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Koury, William J

Report Date : 11 Aug 1992

Pagination or Media Count : 8

Abstract : A simulated burst echo signal (artificial target), corresponding to a delayed and conditioned version of an RF burst signal from an associated radar under test, is presented to the associated radar under test by coupling a portion of the RF burst signal into a shipboard sensor exerciser apparatus in which the present invention is employed to feed an attenuated facsimile of the RF burst signal into a phase-locked loop portion thereof. The phase-locked loop locks on to the attenuated facsimile of the RF burst signal and generates an error signal in response there to. The error signal is then digitized and stored in an error storage unit portion where it is delayed for a predetermined time associated with the desired selected range of the artificial target. After this appropriate delay time, a target processor portion of the shipboard sensor exerciser apparatus, in coaction with a system control logic, causes the error storage unit to dump through a digital-to-analog converter portion thereby reconstructing the error signal but delayed by the aforementioned predetermined time.

Descriptors :   *DIGITAL TO ANALOG CONVERTERS, *SIGNALS, *TARGETS, *PATENTS, ANALOGS, CONTROL, CONVERTERS, COUPLINGS, DELAY, ECHOES, ERRORS, FACSIMILE EQUIPMENT, INVENTIONS, LOGIC, LOOPS, PHASE, RADAR, RESPONSE, RUPTURE, SHIPBOARD, STORAGE, TEST AND EVALUATION, TIME

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE