SU834852A2 - Generator of radio pulses with random parameters - Google Patents

Description

(54) GENERATOR OF RADIO IMPULSES WITH RANDOM

PARAMETERS

the converter is connected to the integrator input, a counter, a code comparison unit, a buffer register, a delay element and an RS flip-flop are added, the unit output of which is connected to the control input of the code comparison unit whose output is connected to the second inputs of the third and fourth elements And and through the element delays with zero input of the additional trigger and with the input “Reset of the counter, the input of which is connected to: the output of the fifth element I, and the last output of the counter is connected to the single input of the additional trigger, dnye outputs of the counter and a buffer register connected to the inputs of the comparison unit codes data inputs of bitwise buffer register connected to the outputs of random number generator, and a control input buffer register connected to one of the master oscillator outputs.

The essence of the proposed device is that the period of the following impulses: arriving at the summing and calculating inputs of a reversible counter, is determined by random numbers Ni, produced in the corresponding random number generator, and is varied with the help of the introduced elements from the radio pulse to the radio pulse range T-21 in accordance with the formula

T b |; w + iNi, 0 H-4L /, where / t is the frequency of clock pulses; N is the capacity of the counter.

The drawing shows the functional diagram of the generator.

The generator contains a Poisson pulse generator 1, a master oscillator 2, a generator of 3 random numbers, a generator of 4 clock pulses, triggers 5 and 6, elements AND 7-11, elements OR 12 and 13, a block of 14 elements And, a reversible counter 15, a digital-analog converter 16, decipherors 17 and 18, integrator 19, counter 20, code comparison unit 21, buffer register 22, delay element 23, and additional trigger 24.

The device works as follows.

At the outputs of trigger 5, antiphase telegraph signals are generated, therefore a short start pulse from the first output of the master oscillator 2 passes with equal probability either through the logic elements AND 8 and OR 12, or through the elements AND 9 and OR 13, to one of the trigger inputs 6 and sets it to the appropriate state. At the same time, the start pulse rewrites 3 random numbers from the generator to the reversible counter 15 and to the register 22 a random number, and a wide strobe video pulse from the second output of the generator 2 opens element 7 and the clock pulses from the output of the generator 4 arrive at the input of counter 20. From the output

counter 20. The N-th pulse arrives at the single input of the trigger 24, sets it to the single state, and thereby supplies the enable signal to the block 21, compare the codes. After this, a comparison pulse at the output of block 21 appears at the moment it arrives at counter 20 (N-fN;) - rQ clock pulse, where NI is a random number in the buffer register 22. The comparison pulse through one of the elements 11 or 10 depends on from the state of trigger 6 enters on

summing or subtracting c) one reversible counter 15, as well as through delay element 23 sets counter 20 and trigger 24 to zero state. This thereby prevents the generation of a comparison pulse at the output of the block 21 at the moment the clock pulse arrives at the counter 20 and ensuring its occurrence only at the moment (Nf N;).

Thus, until the broadening gate pulse is fed from the second output of the master oscillator 2 to the input element I 7, pulses with a period T - - (Nf N;) are fed to the reversing counter 15. The decoders 17 and 18 at the time they reach the counter 15 the maximum state transfers it from the addition mode to the subtraction mode and, conversely, ensures the formation at the output of the digital-to-analog converter 16 of a periodic step voltage of the corresponding frequency and initial phase.

0 The oscillatory process at the output of the converter 16 stops at the end of the strobe video pulse. The next, radio pulse begins to form from the moment of generation of the next trigger pulse by the generator 2. However, when

5 this random number generator 3 generates another random number, and therefore pulses with a different frequency arrive at the reversible counter 15 from the output of the code comparison unit 21, and another frequency of the oscillatory process is also determined. In addition, and the phase of the oscillatory process of the other, since the reversible counter 15 operates with a different initial number.

The proposed generator allows generating radio pulses with a random initial phase and frequency of filling. Moreover, the filling frequency is quite simply changing within (1-2) f with a discreteness proportional to the value of 1 / N. If necessary, change the frequency in a wider range to the trigger 24 connect additional triggers.

The distribution law of the initial phase and filling frequency can be changed by rearranging the random number generator 3 to another distribution law. If it is necessary for the laws of distribution of the initial phase and filling frequency to be different, you need to have two different random number generators.

Claims (1)

Invention Formula The generator of radio pulses with random parameters for aut. St. No. 684726, characterized in that, in order to expand its functionality, a counter, a code comparison unit, a buffer register, a delay element, and an RS flip-flop, the unit output of which is connected to the code comparison control input, are additionally introduced into it. the output of which is connected to the second inputs of the third and fourth elements I and through the delay element with zero input of the additional trigger and with the reset of the counter, the input of which is connected to the output of the fifth element I, and the last output of the counter connected to the single input of the additional trigger, discharge outputs of the counter and the buffer register are connected to the inputs of the code comparison unit, the information inputs of the buffer register are bitwise connected to the outputs of the random number generator, and the control input of the buffer register connected to one of the outputs of the master oscillator. Sources of information taken into account during the examination 1. USSR author's certificate No. 684726, cl. H 03 K 3/84, 04/18/77