Detection Performance Simulation of a Dicke-Type CFAR in Distributed Clutter.

Abstract

A Dicke-type CFAR processor is one which hard limits the radar IF or bipolar video signal prior to pulse compression. The constant false alarm rate (CFAR) properties of this processor in white receiver noise are well known. When the background against which targets must be detected is due to clutter returns, this CFAR property is destroyed. This report summarizes results of computer simulation of a Dicke-type CFAR in a background consisting of distributed clutter returns. Clutter model parameters are chosen to approximate the statistics of sea, rain, and land clutter. The simulations show the increase in probability of false alarm (PFA) in these backgrounds when the threshold settings are chosen to provide the desired PFA in receiver noise. In addition, the probability of target detection as a function of signal-to-background ratio is determined. Values are determined for the coefficients in a parametric representation of these results.

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Document Details

Document Type
Technical Report
Publication Date
Feb 22, 1980
Accession Number
ADA082550

Entities

People

  • J. N. Bucknam

Organizations

  • Technology Service Corporation

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Computational Science
  • Computers
  • Data Science
  • Detection
  • Distribution Functions
  • False Alarms
  • Gaussian Noise
  • Generators
  • Information Processing
  • Information Science
  • Probability
  • Pulse Compression
  • Random Number Generators
  • Random Variables
  • Statistics
  • Target Detection
  • Waveforms

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Approximation Theory.