Analysis of Two-Pass Modified Hough Transform Technique for the Detection of Wake Like Signals,

Abstract

In this paper a procedure is developed using the Modified Hough Transform (MHT) for the detection of signals of low signal-to-noise ratio. The signal can be considered as being composed of a sum of narrow lines. The expected number of signal and false lines to be found in an image can be determined as a function of the false alarm probability per decision. The MHT performance is compared to that of the matched filter. The method is applied to noisy images containing a wake-like signal. The MHT is able to detect the signal pattern at signal-to-noise ratios for which the signal is just visible on a good image display system. A two pass system, employing prior knowledge about the signal, gives improved detection performance. Keywords: Speckle noise, Modified hough transform, Matched filter processing, Acoustic detectors, Canada. (jes)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1989
Accession Number
ADA211982

Entities

People

  • M. J. Wilmut
  • R. F. Mackinnon

Tags

DTIC Thesaurus Topics

  • Acoustic Detectors
  • Detection
  • Detectors
  • Display Systems
  • False Alarms
  • Filters
  • Matched Filters
  • Warning Systems

Fields of Study

  • Engineering

Readers

  • Astronomy/Astrophysics
  • Computer Vision.
  • Radio communications and signal processing.