SU1605229A1 - Generator of random pulse stream - Google Patents

Abstract

The invention relates to computing and can be used in simulating the fluctuation of the intensity of a secondary radar field. The purpose of the invention is to expand the scope of application by allowing the formation of time intervals with the law of distribution of the Relay. The generator comprises a generator of 1 uniformly distributed random numbers, a block 2 of logarithmization, a digital-to-analog converter 3, an inverter 4, a comparison circuit 5, a pulse shaper 6, a generator of linearly varying voltage, a quadrant 8 and a delay element 9. The goal is achieved by introducing new blocks and connections. 1 il.

Description

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The invention relates to computing and can be used in modeling fluctuations. the intensity of the secondary radar field.

The purpose of the invention is to expand the scope of use by providing the possibility of forming time intervals with the distribution law of the relay.

The drawing shows a structural diagram of the proposed generator.

The random impulse flow generator contains a generator of 1 uniformly distributed random numbers, a logarithm block 2, a digital-to-analog converter 3, an inverter 4, a comparison circuit 5, an impulse generator 6, a linear-varying voltage generator 7, a quadrator 8 and delay element 9 .

The generator works as follows.

Before starting work, the pulses to the polling input of generator 1, to the reset input of generator 7, and to the input of element 9 are given synchronously. Generator 1 generates a random number 1 uniformly distributed in the interval 0 ... 1. This number in block 2 is converted to number a 1n and fed to the input of converter 3. In converter 3, number a is converted to

the constant voltage that goes through the inverter 4 to the first input of the circuit 5, the level U - the voltage at the output of the inverter 4 - is

and -K, (1)

where Ki is the transfer coefficient of converter 3. Through element 9, a triggering pulse arrives at the start input of the generator 7, and it begins to produce a linearly increasing voltage), which goes to the input of divider 8, the voltage U (t) is related to the time t counted from the moment the triggering pulse arrives at the generator input 7, by

) (2)

where K is the steepness of the generator 7.

The voltage from the output of the generator 7 is fed to the input of the quadrant B, Kvaprator 8 forms a voltage UgCt) proportional to the quadrant of the voltage received to its input

i2

UpCt) K

(3)

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where K. is the quad0 transfer coefficient

Rator 9.

The voltage Ug (t) is fed to the second input of the circuit 5. At the time when the voltages U and Ug (t) are equal, the input of the circuit 5 at its output generates a signal, under the action of which the driver 6 generates a pulse, which input of the generator 1, directly to the reset input and through element 9 to the start input of the generator 7. The voltage Uy (t) at the output of the generator 7 abruptly decreases to zero, and then begins to increase linearly again. Generator 1 generates a new random number in the range 0 ... 1. The next cycle is repeated.

Claims (1)

Invention Formula A random pulse generator containing a generator of uniformly distributed random numbers, the output of which is connected to the input of a digital-analog converter through a logarithmic unit, the output Equals the comparison circuit through a pulse shaper connected to the input of a poll of a generator of uniformly distributed random numbers and connected to the generator reset input linear variable voltage, the start input of which is connected to the output of the delay element, the input of which is connected to the output of the pulse former, output i Is expensive a generator output, characterized in that, in order to expand the scope of application by providing the possibility of forming time intervals with the Rayleigh distribution law, a quad and an inverter, whose input is connected to the output of a digital-to-analog converter, is entered into it, the output of the inverter is connected to the first by the entrance. comparison circuits, the second input of which is connected to the output of the quad, the input of which is connected to the output of the generator of a linearly varying voltage.