METHOD FOR MEASURING PARAMETERS OF CHANNEL CIRCUITS WHICH RADIO PULSE COMPONENTS VARY IN AMPLITUDE Russian patent published in 1995 - IPC

FIELD: measuring devices. SUBSTANCE: method involves generation of low-frequency A(t) and radio pulse B(t) sin ω(τ)(t) components of test signal, where B(t) is envelope of radio pulse constituent, t is time, w is angular frequency. Signal for measuring is generated as U_o(t)=A(t)+B(t)sin ωt, A(t) + B(t) sin U_k(t)=A(t)+B(t)sin ωt+ kπ/2)t. This signal is sent through tested channel circuit. In addition test signals are generated: , they are sent through tested channel circuit. Instantaneous values of each test signal are measured at output of channel circuit. Instantaneous values of envelope of radio-frequency constituent is calculated according to equation B(t) 1/2 . Values of signals A(t) and B(t) are measured in characteristic points. Investigated parameter is determined by this value. Instantaneous values of low-frequency signal in time t is calculated by equation A(t) 1/4 A(t) = 1/4 (U_o(t)+U₁(t)+U₂(t)+U₃(t)).. Invention specification contains description of device which implements above-described method. EFFECT: increased precision. 2 cl, 8 dwg