Accession Number : ADD009173

Title :   Doppler Signal Processing Circuitry.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Rittenbach,Otto

Report Date : 09 Dec 1981

Pagination or Media Count : 16

Abstract : Circuitry is disclosed for processing Doppler-shifted radar signals or other noisy signals which fluctuate widely in frequency. The circuitry includes a dual channel discriminator including a voltage controlled oscillator as part of a feedback loop for frequency tracking of said signals. The discriminator further includes a frequency pass circuit in one channel thereof and a frequency stop circuit in the other channel thereof, with the outputs of these circuits applied to a multiplier. The multiplier output controls the frequency of the voltage controlled oscillator. The voltage controlled oscillator output is heterodyned with the input signals to obtain the heterodyned signals for application to the aforementioned two channels of the discriminator. (Author)

Descriptors :   *Patent applications, *Doppler radar, *Signal processing, *Discriminators, Dual channel, Radar signals, Tracking, Doppler systems, Channels, Voltage controlled oscillators, Input, Doppler effect, Loops, Heterodyning, Radar pulses, Control, Continuous waves, Frequency, Signals, Feedback, Processing, Circuits, Output

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE