Accession Number:

AD0654363

Title:

FEASIBILITY OF SPIRAL AND RADIAL DISC METHOD OF CORRELOGRAM SCANNING,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

1959-01-26

Pagination or Media Count:

25.0

Abstract:

The results of the study indicate that the ratio of phototube signal output-to-phototube noise, SN, calculated for average values of system parameters, is too small to be useful. Comparing signal current, dark current, and noise current, it is seen that the signal is approximately 2-12 times the noise, while the dark current is relatively negligible. Included are graphs Figures 6, 7, 8 which give the interrelationships between the various parameters which influence the signal-to-noise ratio. If it is desired to compromise between any of these parameters to obtain a workable SN, the curves will provide an estimate of the results to be expected. Author

Subject Categories:

  • Cartography and Aerial Photography
  • Printing and Graphic Arts

Distribution Statement:

APPROVED FOR PUBLIC RELEASE