Pulse or digital communications – Repeaters – Testing
Patent
1983-03-01
1984-12-25
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
364574, 375 99, 328151, H04L 2706
Patent
active
044908318
ABSTRACT:
A digital pulse detector circuit having a selectable false alarm rate receives an analog input signal containing periodic correlation pulses in a background of noise. The input signal is sampled and digitized to produce a series of digital input samples which are taken for regular time slots within a series of time frames. Each of the digital input samples is summed with a previously stored digital summation sample to produce a new summation digital sample that replaces the summation sample read out of memory to produce the new summation sample. The new digital summation sample is compared to a threshold value to produce a signal confirmed signal to indicate detection of the correlation pulse. When a set number of summation steps are carried out for a particular time slot and the summation value for that time slot has not exceeded the threshold value, that time slot is reset to zero to eliminate accumulated noise. The threshold values of the integrated pulses can be set at the threshold detector to enable the operator to select the false alarm rate.
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Atkinson Stuart L.
Poston Billy R.
E Systems, Inc.
Meier Harold E.
Safourek Benedict V.
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