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SCIENTIFIC WORK

SCIENTIFIC AND TECHNICAL JOURNAL źRADIO COMMUNICATION THEORY AND EQUIPMENT╗ ISSUE 1, 2007

SEQUENTIAL ALGORITHM FOR DETERMINING A PARTIAL ELEMENT OF FH SIGNAL. PART II. OPTIMAL STOPPING RULE AND NUMERICAL CALCULATIONS.

V.I. BORISOV, V.M. ZINCHUK, A.E. LIMAREV, A.V. NEMCHILOV

To determine a partial FH signal element a Bayesian procedure is proposed with an optimal stopping rule which secures maximum time for covering the given frequency element with a repeater jamming. Optimal stopping rule and numerical calculations of the sequential procedure efficiency evaluation are examined.


MULTICRITERIAL QUALITY ESTIMATION OF COMPLEX DATA COMMUNICATION SYSTEMS AND COMMUNICATION FACILITIES BY A METHOD OF SUCCESSIVE DECISION MAKING WITH THE EMPLOYMENT OF INCOMMENSURABLE CRITERIA AGGREGATE

V.V. MAYOROV

Implementation algorithm for multicriterial quality estimation of complex systems and communication facilities operation is offered without constructing an integral criterion in analytical form with partially indistinct problem statement.


MODIFIED RECURRENT ALGORITHM ANALYSIS OF SPACE-TIME SIGNAL PROCESSING IN ADAPTIVE LINEAR SUMMER

A.V. RYZHKOV, A.A. TEMNYSHOV

Recurrent algorithms synthesis of space-time signal processing which determines the structure of device for space-time processing of signals and research the noise suppression degree in particular systems are considered.


FORCED PROCESSES ANALYSIS IN RADIO ENGINEERING VIBRATING SYSTEMS BY SETS OF SIMULTANEOUS INFINITE EQUATIONS

YU.B. NECHAEV, N.D. BIRYUK, E.V. LATYSHEVA

An analysis needed for forced processes in tank circuit at arbitrary disturbance with the help of simultaneous infinite equations theory is proposed. This theory has been shortly described for user convenient application. The method can be used for other radio engineering problems.


TENDING TO ZERO CONDITIONS OF PROBABILITY INTEGRAL PRODUCTS WITH POWER AND EXPONENTIAL FUNCTIONS

N.E. KOROTKOV

The widest (necessary and sufficient) conditions of tending probability integral products with power and exponential functions to zero during an independent variable tending to the infinity on the complex plane necessary for formulation of extended conditions of proper integrals connected with probability integrals are presented.


INTEGRALS CONTAINING POWER, EXPONENTIAL FUNCTIONS, PROBABILITY INTEGRALS COMBINATIONS, THEIR COMPLEMENTS WITH RESPECT TO LIMITING VALUES

N.E. KOROTKOV

Integrals of power and exponential functions with differences, sums of two probability integrals or with their complements with respect to possible limiting values 1, ľ1 are presented. For improper forms of such integrals necessary and sufficient convergence conditions are received. Exponential functions in compositions of given products with the first exponent of power are supposed. The considered integrals can be used both in complex and real areas.


MAN-MADE DIALOG OPTIMIZATION AS ONE OF DECISION MAKING EFFICIENCY BY AN OFFICER IN STCS (SINGLE TACTICAL CONTROL SYSTEM)

D.Z. ARIFULLIN, A.N. DEREEV, I.V. SALTEVSKY

Such a significant, from the point of view of securing given probabilistically time responses, indicator for process of manufacture, formation, and decision making by an officer as organization modes of a man-made dialog is determined based on structure analysis of software for the single control system.


PRACTICAL REALIZATION OF PACKETS ROUTING IN MOBILE PACKET COMMUNICATION NETWORKS

A.A. CHERNIGIN, A.A. STUPINA, N.N. AVDEEV

A possibility of practical realization for packets routing algorithm in a network for real modern microcontrollers is considered.


WIDEBAND SIGNALS SEARCH OPTIMIZATION IN SATTELITE COMMUNICATION LINKS

A.G. FILATOV

Optimization method of cyclic sequential search for wideband signal under conditions of carrier frequency and clock uncertainty in pseudorandom sequence is proposed. Under given channel parameters (search time, success probability, and signal-to-noise ratio) this method enables minimizing the number of required correlation channels.


A FORMAL PROBLEM SETUP FOR ROUTING OPTIMIZATION

A.A. DONCHENKO, A.A. NOVOPOLTSEV, A.A. PODLEZHANSKY

A routing optimization problem for communications networks according to different tests forms is considered. Conditions which allow substantiating requirements for different indicators of information distribution plan are presented.


ABOUT A METHOD OF SIGNALS SEPARATION IN BURGLAR ALARM COMMUNICATION SYSTEMS

G.V. VOLOBUYEV, N.N. SEMYONOV, V.D. LUKYANCHIKOV, V.I. LEDOVSKIKH

Burglar alarm communication systems which use random member transducers for signals mutual suppression removal from alarm devices and which allow increasing communication noise immunity nearly of the one order are considered.


COMPARATIVE ESTIMATION OF SWITCHING METHODS FOR FREQUENCY CHANGE TIME DIMINUTION OF FREQUENCY SYNTHESIZERS WITH PULSED PLL

S.K. ROMANOV, N.M. TIKHOMIROV, M.N. TIKHOMIROV, I.A. MARKOV

Analytical expressions for determining duration of transient processes at frequency change of frequency synthesizers with swicthing elements and allowance for slip mode are found. Comparison of the computation results according to these expressions as well as results of transient processes simulation in the synthesizer is conducted. The comparison is done in terms of pulsed PLL system of the third order using the visual simulation modeling system SIMULINK of the mathematical calculations system MatLab.


OPERATIVE ESTIMATION FOR PARAMETERS OF ELECTRONIC FACILITIES INFLUENCE ZONES

E.A. KHROMYKH, A.A. CHAPLYGIN, S.N. SHULZHENKO, V.F. BLINOV

For more operative and visual solution of electromagnetic compatibility or electronic suppression, a new power estimation procedure for the electromagnetic field at a reception point is proposed. The procedure is based on a text editor application. So, for its realization a PC with text editor is needed (for example, Word 2001) and a database with dependencies of signal attenuation on different paths.


PULSED PHASE NONLINEARITY INFLUENCE ON INTERFERENCE SPECTRUM IN A PULSED PLL SYSTEM WITH FRACTIONAL FREQUENCY DIVIDER

S.K. ROMANOV, I.A. MARKOV

A mathematical model of pulsed PLL system with fractional frequency dividers (using delta-sigma modulation) and pulsed phase discriminator having non-identical pump currents is obtained. A program for calculating fractional noise level based on the obtained model is developed.


MACHINE OF CONDITIONS FOR PROCESS OF CHANGING THE PHASE TO AN ARBITRARY ANGLE IN HIGH-QUALITY SERIES OSCILLATORY CIRCUIT

N.M. NAZAROV

A machine of conditions realizing instantaneous phase transition in a high-quality series oscillatory circuit is described.


INTERFACE OF ELECTRONICALLY TUNABLE FILTERS

M.A. KOROLKOV, L.A. MALTSEVA

Technology of interfacing electronically tunable filters, methods of control voltage generation, and methods of interpolation are considered. Recommendations to design engineers are given.