Radar unit for determining optionally of the mean value of the location of the midpoints or. The mean value of the pulse duration of radar video pulses

摘要

A radar unit arrangement for determining the position of the pulse center and the pulse duration of the received echo pulses. The echo pulses gate a number of subpulses to a first binary up-down counter which counts the subpulses. A second binary up-down counter receives a pulse from the first each time a certain value is exceeded. A third binary counter indicates the time elapsed from the moment of the emitting a radar pulse. The contents of the second and the third binary counter are continuously compared in a comparator which each time equality is obtained activates a bistable circuit. The first and the second binary counters are controlled by the bistable circuit so as to switch the counting direction of the counter in such a way that the number of subpulses before and after the change of state of the bistable circuit will be the same.