Accession Number : ADD000313

Title :   High Resolution Radar Range Tracking System.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Calder,David A

Report Date : 29 Aug 1974

Pagination or Media Count : 12

Abstract : The patent application describes a radar tracking system using linear frequency ramps. A first frequency generator produces a linearly rising signal for a predetermined time that is transmitted and received and mixed with a second signal initiated at a predetermined time, the second signal having the same ramp slope but offset in frequency by a known value. The resulting intermediate frequency signal is fed to a bank of bandpass filters, then to a bank of diode detectors, followed by a bank of sample and hold and threhold circuits. The threshold circuits are fed to the nearest range detector and the particular activated threshold circuit causes the detector to generate a range error work accordingly that is fed to a computer resulting in a range gate signal that initiates the second frequency ramp signal.

Descriptors :   *Radar tracking, Patents, Chirp radar, Ranges(Facilities), High resolution

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE