Accession Number : ADD000151
Title : Close-In Ranger System.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Bishop,Wilson P
Report Date : 22 Jan 1974
Pagination or Media Count : 7
Abstract : The patent describes a range measuring system wherein a transponder at a remote location is interrogated by coded signals from a base location. If the interrogation is correctly coded the transponder replies. Receipt of a correct reply interrupts the generation of a ramp voltage at the base location. The ramp voltage is measured to determine the range from the base to the transponder. Novel circuitry including a ramp current generator, selectively variable impedance input range switch means, a selectively variable initial voltage ramp set range switch means, shaper gate means, is provided to obtain superior accuracy in range measurements.
Descriptors : *Range finding, *Patents, Transponders, Coding, Signals, Pulses, Airborne, Interrogators
Subject Categories : Active & Passive Radar Detection & Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE