SU674212A1 - Digital meter of monopulse signals - Google Patents

Description

(54) DIGITAL MEASURING MONOMETRIC SIGNALS

During the measurement, the first input of the trigger is connected to the output of the amplitude comparator, and the second input is connected to the control input of the digital time meter and to the output of the recirculator of pulses in the reference comparator circuit.

The structural electrical circuit of the device is shown in the drawing.

The device contains a delay line 1, an input signal amplitude measurement unit 2} analogue memory element 3, a voltage divider 4 amplitude comparator 5, comparators 6, reference comparator 7, trigger 8 with separate inputs; switching elements 9, recirculators 10 pulses digital meter 11 time intervals, block 12 approximation and selected measurement data. The device works as follows. A single pulse, the shape of which is to be measured (registered), is fed to block 2, and then with a delay in line I to the measurement inputs of all comparators 5, 6, 7. Amplifier is the same as the analog signal 3 and through the divider 4 into the form of the quantization reference levels is distributed across the comparators.

During operation of the device, the measured signal is compared with the reference levels of the comparators. As the signal from the zero level changes, the comparators alternately trigger — first, the reference 7, then the comparators 6, and when the maximum value is reached — the amplitude comparator 5. The switching elements 9, controlled by the trigger 8, in the initial state of the device are connected to the comparator 5, b, 7 one of two peiwpkyjiHTbpoB 10. Therefore, the pulses generated by the comparators In MoMa, the equality of individual instantaneous measurements of the measured signal to the corresponding quantization levels, as far as possible, is recirculated x 10. When triggered, the amplitude of the comparator 5 is switched trigger switching elements 8 and 9 switch the output of each comparator in the second recirculation dispenser 10, before turning off the connected tori recirculating pulse SyShayaSh. The process of measuring the remaining part of the signal, its amplitude to the zero level, is similar, but comparators now work in the opposite direction. The last comparator 7 is triggered by the impulse of the comparator (corresponding to the moment of completion of the sampling of the measured signal), which is stored in the corresponding recirculation of toroM 10, the trigger 8 is switched, and the switching elements 9 are returned to the initial state. At the same time, on the signal of the reference comparator 7, a digital worm is started;

shafts of time between pulses of recirculators 10, proportional to the speed of measurement of the function in the corresponding elementary areas. The measured values of the elementary time intervals through the digital meter 11 are sent to block 12, in which 4} the yurma of the measured monopulse is restored. The ratios of the divider 4 stages are determined during calibration of the device and stored in the memory of block 12. The memory also records the measured digital amplitude value of the signal, which is determined by the noise of the comparators and the measurement error of the time intervals.

Claims (2)

1.Gr znov M.I. An integral method of pulse measurement. M., Soviet Radio, 1975, with. 11-15. 2. E. Gitis. Information converters for electronic digital computing devices. M., Energie, 1975, p. 314-315. 674212