Accession Number : ADD007343

Title :   Display Processor for Aircraft Landing System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lewis,Bernard L

Report Date : 08 Apr 1980

Pagination or Media Count : 9

Abstract : A circuit for processing the azimuth error video signal of a monopulse receiver in an aircraft to separately but simultaneously display the heading and position of the craft. The azimuth error signal is simultaneously applied to a sample-and-hold (SAH) circuit, a delay means and a one-shot multivibrator (MV). The MV opens the SAH to accept the first ground-transmitter signal in a sequence, the SAH charging a capacitance to the magnitude of the signal, and then prevents the SAH from accepting any further signals in the sequence. The output of the SAH is subtracted from the delayed signal to obtain a video signal indicative of aircraft position, and the output of the first subtracter is subtracted from the delayed signal to obtain a video signal indicative of the aircraft heading. (Author)

Descriptors :   *Patents, *Microwave landing systems, Video signals, Signal processing, Microwave receivers, Cathode ray tube screens, Azimuth, Errors, Multivibrators, Circuits, Monopulse radar, Landing aids, Instrument landings, Position finding

Subject Categories : Flight Control and Instrumentation
      Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE