Accession Number : ADD014564

Title :   Semi-Automatic Direction Finding Set.

Descriptive Note : Patent Application, Filed 5 Dec 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Huntley, William P ; Swanick, David J

Report Date : 05 Dec 1989

Pagination or Media Count : 14

Abstract : A receiver selects and amplitude demodulates an RF signal from one of a plurality of directional antennas. The demodulated signal is then delayed to put it in time synchronism with the same signal information from an omnidirectional antenna. A signal is then generated of the peak pulses of the demodulated signal when the pulses are in time synchronism with pulses from the omnidirectional antenna. A control indicator receives the peak pulses along with periscope bearing signals and ship's heading signals and gives an r, theta display of the amplitude of the RF signal selected from the directional antenna at the periscope true bearing angle. Patent applications. (rh)

Descriptors :   *DIRECTION FINDING, *PATENT APPLICATIONS, AMPLITUDE, BEARING(DIRECTION), CONTROL, DEMODULATION, DIRECTIONAL ANTENNAS, DISPLAY SYSTEMS, INDICATORS, OMNIDIRECTIONAL ANTENNAS, PEAK VALUES, PERISCOPES, PULSES, RADIOFREQUENCY, SEMIAUTOMATIC, SIGNALS, SYNCHRONISM, TIME

Subject Categories : Target Direction, Range and Position Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE