SU1233179A2 - Device for determining parameters of exponential-cosine correlation funtion - Google Patents

Abstract

The invention relates to the field of computing and can be used in the study of random processes in the tasks of automatic control, identification, etc. The purpose of the invention is to expand the functionality by determining the sequence of uncorrelated discrete values of the random process being investigated. The goal is achieved by introducing into the known device of a clock generator, analog-digital and digital-analog converters, the first and second keys, the counter and the comparison unit. The new blocks and the corresponding functional relationships allow the uncorrelated discrete values of the process under study to be determined, i.e. synthesize a sequence of uncorrelated random variables. I il.

Description

The invention relates to the field of computing and can be used in the study of random processes in the tasks of automatic control, identification, etc.

The purpose of the invention is to expand the functionality by defining a sequence of very-correlated discrete values of the random process under investigation.

The drawing shows a block diagram of the device.

The device contains an amplifier-limiter 1, a block 2 of the average number of intersections, a block 3 of exponential smoothing., A single-channel correlator 4, a computing block 5, a block 6 of exponentiation, a block 7 {scissors, a block 8 division, a block 9 comparison, a digital-analogue converter 10, counter 11, first key 12, analog-to-digital converter 13, second key 4, clock generator 15, output 16 of an uncorrelated value of a random process.

The device works as follows.

Limiter 1 converts the probable random process into a sign signal. In block 2, the average number of non-cuts measures the average number of zero-level intersections, which coincides with the parameter and attenuation of the exponential-cosine correlation function (EQF) approximating the sign the correlation function of the random process under study. The sign signal undergoes exponential smoothing in block 3; and the correlator - torus 4 determines the correlation moment of the signals at the output of block 3 of the exponential smoothing. It is known that the output signal of the correlator thus included is proportional to the first coefficient of the correlation function in the series Laguerre from the argument y, J is the decay parameter of the exponential smoothing filter. In computational unit 5, the coefficient determining the frequency of the correlation function by the formula is estimated from the signal from unit 2 and the correlator 4;

L-Parameter p comes from the output of the computational unit 5 to the BSKD block, and 6 to the power, where the magnitude is 0.1

There is an increment of p by raising p to a power of 0.05. This signal is fed to the first input.

block 7 multiply 5 to the second input of which the parameter K is received from the output of block 2 of the average number of intersections. In block 7 of multiplication, the value Gi fb is calculated, which

is fed to the input of the dividing unit 8, where dividing a constant value of 0.61 is performed, according to the formula, 0.61 / (E, The calculated 3Ha4 5 iHJ5e correlation interval about q EKKF is fed to the first input of the 9 comparison unit. From the information about the device input, the investigated process of the Eighth process goes through the analog-digital converter 13 to the control input of the first key 12, With this 1. analog voltage corresponding to the 13th value (from the output of the dividing unit 8 arrives at the first input of the comparison unit 9 . On

the second input of the comparison unit 9 comes from the output of the digital-to-analog converter 10 analogue voltage, cooTiseTCTByiontee the current time of the random process. Wherein

A meeting of the time for a time is carried out in the following clock: the clock 1 1 5 which reads the periodic sequence of clock pulses arriving at its counting input from

The code of the second key 14, the sync pulses are generated by the generator 15 snnh) eoimpul and arrives at the input of the counter 1I only when the second key 14 is open 14 The key 14 is opened

roofing :; : o if there is a random process under study at the device input. When on the face: AI on the first input of the key 14 of the voltage corresponding to the random process, it opens

and the sync pulses arriving at its second input, arrives at the input of counter I. Since the pulse following period is constant and known, the number of pulses read gives

information about the current time of a random process “The counter of the counter 1 1 is connected to the input of a digital-to-analog converter, the output of which is

the lot voltage corresponding to the current time is fed to the second input of the comparison unit 9 and compared with the analog value. When the condition Z - t is fulfilled, the signal from the equality output of the comparison unit opens the first key 12 and the current uncorrelated value of the random process in digital form is fed to the output 16 of the device and simultaneously to the input of the zero setting of the counter II for zeroing it.

Claims (1)

Invention Formula A device for determining the parameters of the exponential-cosine correlation function according to aut. C. No. 696487, characterized in that, in order to expand the functional functions by determining the sequence of uncorrelated discrete values of the random process under study, an additional generator is introduced into it Editor S. Patrushev Compiled by E. Efimova Tehred M. Khodanich Proofreader A. Tsko Order 2773/52 Circulation 671 Subscription VNIISH1 USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 79 sync pulses, analog-to-digital converter, digital-to-analog converter, first key 5, second key, counter and comparison unit, the equality output of which is connected to the control input of the first key, the information input of which is connected to the output of analog-digital converter device input and connected to the control input of the second key, the information input of which is connected to the output of the clock generator, the output of the second key is connected to the counting input of the counter, output which is connected to the input of a digital-analog converter, the output of which is connected to the first information input of the comparison unit, the second information input of which is connected to the output of the divi- 2