DEVICE FOR DETECTING A PULSE TRAIN IN A NOISY BACKGROUND AND APPLICATION TO A DME TYPE RADIONAVIGATION SYSTEM

摘要

accurate disclosurethe invention is directed to a device.in the middle of noise detection, eachpulses from a train of pulses. it containsmainly from the crest of a detectorpulse; a first delay line providing adelay in the received signal; a first comparator comparingthe level of the first pulse from thehalf peak value and a second delay line.at the same time, a second delay to the input signal.different from the first and second comparator comparingthe signal generated by a second delay line atsignal generated by the first delay line and thehalf peak value, and a door and providing athe output signal when there is a coincidence of the signals.out of the two comparators.