Accession Number:

AD0655420

Title:

DETECTION OF PULSED SIGNALS IN NOISE. AN EXPERIMENTAL STUDY BASED ON THE MARCUM THEORY,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

1958-02-13

Pagination or Media Count:

17.0

Abstract:

In applications involving the detection of pulsed signals in random noise, the theoretical work of Marcum has proven useful. The calculation of detection probability as a function of signal-to-noise ratio and number of pulses integrated has been accomplished by Marcum and the data presented for a wide range of parameter variation. An experimental investigation was undertaken to verify the results of Marcum and to relate the assumptions and approximations contained in the theory to a practical embodiment. The instrumentation consisted of a simulated pulsed-radar receiver, scaled down in frequency for convenience, in which i-f pulses generated by gating the output of a CW oscillator were combined with random noise, bandpass filtered and square-law detected. The desired number of detected pulses were then added and applied to a threshold detector by means of which the probability of exceeding a given threshold could be determined. Author

Subject Categories:

  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE