SU498626A1 - Correlometer - Google Patents

Description

(54) CORRELOMETER

and 6. Here is a pit do.tzh: iy be chosen like that

so that the relation is a whole lot. OTT

personal from zero. The delay between the second pulses of the samples will be of the difference and period (Fig. 2), i.e., mif, between the third pulses - twice the difference, and in the general case:

t

n t

Dt, - i, where I 1,2,3. .., After the naipbi sample pulses numbered 1), the cycle is repeated in a similar way. It is very important to synchronize the operation of the multiplication unit 8 and the averager 12 so that the results of the multiplication of pulses with odipacks fall on the corresponding cells of the average of the 12 unit. by delays. The time-averaged relocation results from each cell of the averager 12 are counted by the reference block 10. And transmitted successively to the indicator 11. As the last, there may be an oscilloscope or recorder.

Synth 7, in turn, is controlled by the sampling pulses after frequency dividers 5 and 6. Pa. Spreader Itel 9 transmits a batch; not to the corresponding cells of the averager 12. The latter must and must have cells,

for only in this case is it possible to divide

All points of the graph are measured from the correlation function, which provides real-time measurement. For example, a correlometer having a clock generator with a frequency of 100 MHz,, t-, delay time 10 nsec, provides a study of signals with a frequency of up to 25 MHz, which is much better than the performance of modern instruments operating in real time. It should be noted that the delay between the b (the signal is carried out using discrete frequency division circuits. This provides a higher accuracy than 1 m gf} 1 using a single delay.

Formula and 3 o-b etep

A correlometer containing a pulse generator, a frequency divider, a reference unit, a distributor connected to the averager, as well as an input attenuator connected to a quantizer connected to a quantizer with one of the inputs of the multiplication unit, characterized in that in order to ensure real-time operation, the correlometer contains an additional polynomial frequency divider and a synchronizer connected by the inputs corresponding to the outputs of the frequency dividers, and the output connected to the distributor, by the middlehead And with the reference unit, the input of the distributor is connected to the output of the intelligent unit, the inputs of the dividers, and the division factors are 1 / n and 1 / n-m for the whole

-, connected to the pulse generator, and

the moves are connected to the corresponding quantizers.

Impulse omSopa (n) with 5lok.a 3

Pulses selection (pt) from block 10

W

First channel StiifopOK pulses

Impulse 1 SbiSopOK fmoffeeo channel

I.-pulse synchronization

V

VXA

Fig 2