Accession Number:

AD0679499

Title:

SIGNAL-TO-NOISE THRESHOLD RATIO DURING TARGET DETECTION ON A REFLECTING BACKGROUND,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1968-04-05

Pagination or Media Count:

13.0

Abstract:

The article presents the results of an analytical study of the radar signal-to-noise threshold ratio during target detection on a reflecting background. The radar system in the average case is reduced to a typical block diagram a linear part, a detector, and an integrator. The linear part is characterized by the range selectivity. Thus, the computation of the signal-to-noise threshold leads to two well-known operations 1 determination of the signal-noise ratio at the detector input, and 2 determination of the gain in the threshold signal owing to the post-detector processing. On the basis of such approximations, a simple formula is derived which determines the threshold ratio between reflecting properties of the target and the background. The analysis indicates that the additional gain in the threshold signal can be obtained only as a result of the intraperiodical post-detector integration such integration is effective only in cases when the duration of the useful signal can be considerably increased, or if the correlation interval of the interference can be reduced without any change of resolution in respect to range. Author

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE