Semi-Automatic Direction Finding Set.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 05, 1989
- Accession Number
- ADD014564
Entities
People
- David J. Swanick
- William P. Huntley
Organizations
- United States Department of the Navy