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UDC 621.396

METHOD TO MEASURE SIGNAL DISTRIBUTION DURATION IN HYDROACOUSTIC CHANNEL BASED ON MESSAGES TO SINGLE TIME SCALE

B. I. Filippov, PhD (technical sciences), associate professor of Information Security department, NSTU; This email address is being protected from spambots. You need JavaScript enabled to view it.
T. B. Trush, student of Information Security department, NSTU; This email address is being protected from spambots. You need JavaScript enabled to view it.

The work is dedicated to the measurement of distance by determining the signal propagation time between the measured object (MO) and the multifunctional sonar (MS) based on the binding of hours established in MO and MS to scale a single time. It is shown that major factors determining the value of the error in determining the distance between MO and MS along with disturbance acting on the signal in the communication channel include regular component of relative instability of oscillators used for tasks in MO since the time of transmission of the acoustic signal in the direction of MS, as well as for fixing the detection of this signal in MS. The estimate of allowable error information generators has been received, which must not exceed the value of 4,8*10-9 in the conditions of usage as crystal oscillator GK75 – the vehicle. Requirements to choose the generator model, which should implement the reduction of oscillators’ frequencies, are formulated. It is shown that the relative instability of generator frequency model should not exceed 5*10-10. As a generator model the domestic equipment of frequency – timing MRK – 23 is proposed to be used.

Key words: hydroacoustic channel, measurement object, multifunction sonar, operational hydroacoustic complex, single time scale.

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