METHOD FOR AUTOMATIC STABILIZATION OF THRESHOLD FREQUENCY CROSSING FREQUENCY BY NOISE PROCESS EMISSIONS

FIELD: physics.SUBSTANCE: invention relates to the reception of signals, in particular to the equipment for extraction of signals from noise. According to disclosed method of automatic frequency stabilization f of threshold level crossing by noise emissions by adjustment of threshold level depending on frequency of its excess noise process, method includes determining, in advance, frequency fof the noise process of the zero threshold level and a maximum root-mean-square value of the σnoise process, establishing an initial threshold level U f, where f- required frequency f in operating mode, by increasing the threshold by a value ΔU after each exceeding by its noise until the threshold reaches the stable level U, after which number Nof threshold excess is counted with noise emissions during the time of averaging T, at the end of this time at moment trecording value N, define the frequency of noise emissions f= N/Tand sets the operatingthreshold value Tset by condition N > 1/δwhere δis the limit deviation of the amount of noise excess of the threshold level from their average value, the value of fis set within 0.01