Accession Number : AD0654407

Title :   A PHOTOGRAPHIC METHOD FOR ANALYZING RADAR OSCILLOSCOPE PHOTOGRAPHS,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Morris,Charles S. ; Katz,Isadore

Report Date : 04 MAR 1959

Pagination or Media Count : 18

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)

Descriptors :   (*RADAR IMAGES, *PHOTOGRAPHIC ANALYSIS), PHOTOGRAPHS, TERRAIN, RADAR, MAPPING

Subject Categories : Cartography and Aerial Photography
      Photography
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE