AN IMPROVED POLARITY COINCIDENCE DETECTOR,

Abstract

A Polarity Coincidence Detector has been constructed with increased sensitivity and sufficient threshold stability to allow integration times in excess of 1,000,000. The system uses sampling at four phase locations, thereby increasing the signal count and shortening the integration time for a given accuracy by eliminating the necessity for measuring the noise separately. The modulation frequency can be varied between 50Hz and 50 kHz without adjusting the location of the sampling pulses. Solid state circuitry is used throughout the system. The straight counters are replaced by arithmetic units, resulting in greater dependability. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1967
Accession Number
AD0661291

Entities

People

  • M. Raether
  • R. Trogdon
  • W. E. Carr

Organizations

  • University of Illinois Urbana–Champaign

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Arithmetic
  • Arithmetic Units
  • Detectors
  • Frequency
  • Modulation
  • Polarity
  • Sampling
  • Sensitivity

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Mathematics or Statistics
  • Radar Systems Engineering.