FM Ranging Using a Frequency Reaction Correlator.

Abstract

A new type of IF correlator FM ranging system which uses the frequency reaction of an oscillator is described. This system is called a Frequency Reaction Correlator and correlates an IF signal that results from the frequency reaction of the oscillator with an IF reference developed with an RF delay line and mixer. The RF delay line and mixer serves simultaneously to (1) detect the IF signal, (2) develop an IF reference, and (3) correlate the IF signal and reference. To analyze the Frequency Reaction Correlator, a model which describes the amplitude and frequency reactions of a compliant frequency modulated oscillator due to an injected signal is developed. Possible applications of the Frequency Reaction Correlator include doppler ranging, directional doppler ranging, and remote sensing or telemetering. A digital technique for implementing the Frequency Reaction Correlator is discussed. Mathematical analyses and experimental data are presented and are shown to be in agreement. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1976
Accession Number
ADA033434

Entities

People

  • Leon W. Couch
  • Marion C. Bartlett
  • Raymond C. Johnson

Organizations

  • University of Florida

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Control Systems
  • Delay Lines
  • Detection
  • Detectors
  • Frequency
  • Local Oscillators
  • Mathematical Analysis
  • Modulation
  • Phase Shift
  • Power Spectra
  • Range Finding
  • Remote Sensing
  • Resonant Circuits
  • Sine Waves
  • Statistical Analysis
  • Tuned Circuits
  • Waveforms

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Optical Physics and Photonics.
  • Positioning, Navigation, and Timing (PNT) Technology.