A PHOTOGRAPHIC METHOD FOR ANALYZING RADAR OSCILLOSCOPE PHOTOGRAPHS,

Abstract

A method has been developed for analyzing radar oscilloscope photographs which contain calibrated step density wedges corresponding to signal strengths. The method consists of separating areas on the radar photograph sequentially with increasing exposure times. With each increase in exposure, new areas appear. Signal strengths are extracted by means of the calibration step density wedges printed on each photograph. This process is known as the 'contour separation method.' It replaces the slow line-by-line microphotometer method previously used for this purpose. The contour separation method is relatively rapid, treats radar maps as a whole and can be carried out by relatively unskilled technical personnel. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 04, 1959
Accession Number
AD0654407

Entities

People

  • Charles S. Morris
  • Isadore Katz

Organizations

  • Johns Hopkins University Applied Physics Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Calibration
  • Measurement
  • Measuring Instruments
  • Microphotometers
  • Oscilloscopes
  • Photographic Materials
  • Photographs
  • Photography

Fields of Study

  • Environmental science

Readers

  • Aerospace Test and Evaluation
  • Computer Science.
  • Spectroscopy.