Effect of Finite Sampling Rates on Smoothing the Output of a Square Law Detector with Narrow Band Input

Abstract

Most modern spectral analysis systems time-share a single narrow-band filter and detector among a large number of frequency channels and thus provide sampled rather than continuous data to output averaging devices. For practical filter designs and finite sampling rates, a loss in performance is experienced due to this sampling. Analytical means are developed for computing this loss, and the loss is evaluated for a number of common filter shapes. Losses of 1 to 2 dB are shown to occur when the detector is sampled at rates comparable to the detector bandwidth.

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Document Details

Document Type
Technical Report
Publication Date
Feb 26, 1971
Accession Number
AD0882195

Entities

People

  • C. N. Pryor

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Analyzers
  • Autocorrelation
  • Bandpass Filters
  • Bandwidth
  • Classification
  • Correlators
  • Data Processing
  • Detectors
  • Electrical Engineering
  • Filters
  • Frequency
  • Frequency Domain
  • Frequency Response
  • Munitions
  • Ordnance Laboratories
  • Security
  • Signal Processing
  • Sine Waves
  • Spectrum Analyzers
  • Transfer Functions
  • Weighting Functions

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Image Processing and Computer Vision.