Accession Number : AD0684796

Title :   PROBABILITY OF THRESHOLD DETECTING OFF-TUNED PULSES.

Descriptive Note : Section technical memo.,

Corporate Author : ELECTROMAGNETIC COMPATIBILITY ANALYSIS CENTER ANNAPOLIS MD MODEL DEVELOPMENT SECTION

Personal Author(s) : Christopher,P. ; Mayher,R. J.

Report Date : 25 JAN 1963

Pagination or Media Count : 40

Abstract : The amplitude response of a receiver to off-tuned pulses is shown to approximately consist of a sin x impulse followed by a steady state portion with a second sin x impulse concluding the response. The probability of detecting the sin x impulse is determined and some typical results presented. These results can also be used to predict the probability of detecting optimum design pulses whose response is a sin x function. The detection curves of the sin x pulse are compared to those of the ideal square pulse and it is shown that a 1/(square root of 2) reduction of the peak pulse amplitude approximates the correct probability of detection curves. The total probability of detection is obtained by using a peak factor (F factor) to calculate the probability of detecting the impulse responses and applying conservation of energy to calculate the probability of detecting the steady state portion. (Author)

Descriptors :   (*RADIOFREQUENCY PULSES, *RADIOFREQUENCY INTERFERENCE), RESPONSE, PROBABILITY, DETECTION, RADIO RECEIVERS, ELECTROMAGNETIC COMPATIBILITY

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE