HIGH TECH IN EARTH SPACE RESEARCH

Scientific approaches to optimization of properties of ambiguity function of complex signals with discrete frequency modulation

Voronin O. I., Pavlov Yu. V.

The complex research of approaches to optimization of properties of ambiguity function of complex signals with discrete frequency modulation is conducted.

It is shown that signals which ambiguity function the central peak of the minimum width and minimum possible side peaks has are the best. Ideal ambiguity function has the form of the inverted clerical button. Search of signals with similar ambiguity function represents a current scientific problem.

It is shown that good approach to such "button idealization" of ambiguity function is achievable in a class of aggregate signals with the rectangular bending-around and discrete frequency modulation which are widely applied in military systems.

As a result of the analysis of ambiguity function randomly of the selected signal with discrete frequency modulation outputs are received:

– generally the surface of ambiguity function has rather high side lobes, and they are distributed on the time-and-frequency plane unevenly that has negative effect on process of detection of a desired signal;

– generally high sections of ambiguity function of this signal are not symmetric rather coordinate axes that speaks about existence of correlation dependence between errors of estimates of frequency and delay.

In this regard the problem of optimization of two criteria is formulated:

– elimination of coefficient of time-and-frequency communication of errors;

– minimization of levels of side lobes of ambiguity function.

The technique including two stages on first of which by a method of professor of Glazov Boris Ivanovich is developed for a solution of an objective optimization by the first criterion is performed, and at the second stage – in relation to results of the first stage John Peter Costas's method carries out optimization by the second criterion.

As a result of implementation of this technique for the first time it was succeeded to receive the signals optimum by two criteria.

The subject of published articles on the nomenclature of specialties

2.2.15 Systems, networks and telecommunications (technical sciences)

2.3.1 System analysis, management and processing of information (technical sciences)

2.3.5 Mathematical and software of computing systems, complexes and computer networks (technical sciences)

2.3.6 Methods and information protection systems, information security (technical sciences)

2.5.13 Design, design and production of aircraft (technical sciences)

2.5.16 Dynamics, ballistics, the movement of aircraft (technical sciences)

Editorial board

Bobrowsky V.I.
(Ph.D., Associate Professor, Head of Department of "INTELTEH")

Borisov V.V.
(Ph.D., Professor, Actual Member of the Academy of Military Sciences, Professor, Department of Computer Science of MPEI)

Budko P.A.
(Ph.D., Professor, Department of Technical communication and automation in S.M. Budjonny Military Academy of the Signal Corps)

Budnikov S.A.
(Ph.D., associate professor, Actual Member of the Academy of Education Informatization, Head of the automated control systems Department in Russian Air Force Military Educational and Scientific Center “Air Force Academy named after Professor N.E. Zhukovsky and Y.A. Gagarin”)

Verhova G.V.
(Ph.D., Professor, Head of Department of Automation communication companies In the Bonch-Bruevich Saint Petersburg State University of Telecommunications)

Goncharevsky V.S.
(Ph.D., Professor, Honored Worker of Science and Technology of the Russian Federation, Professor of technologies and technical support and maintenance of the automated control systems in Military Space Academy of A.F. Mozhaysky)

Komashinskiy V.I.
(Ph.D., Professor, professor of processing and transmission discrete messages in the Bonch-Bruevich Saint Petersburg State University of Telecommunications)

Kirpanev A.V.
(Ph.D., Associate Professor, Head of JSC "Scientific Production Enterprise "Radar MMS")

Kurnosov V.I.
(Ph.D., Professor, Academician of Academy of Sciences of the Arctic, Academician of the International Academy of Informatization, International Academy of defense, security, law and order, corresponding member of the Academy of Natural Sciences, Senior Researcher" Open Joint Stock Company "Scientific Research Institute "Rubin")

Manuilov Y.S.
(Ph.D., Professor, Department of automated control systems space complexes in Military Space Academy of A.F. Mozhaysky)

Morozov A.V.
(Ph.D., Professor, Actual Member of the Academy of Military Sciences, Head of the Department of automated command and control systems in Military Аcademy of troops of antiaircraft defense)

Moshak N.N.
(Ph.D., Associate Professor, head of the department of "INTELTEH")

Prorok V.Y.
(Ph.D., Professor, professor of automatic control systems in Military Space Academy of A.F. Mozhaysky)

Semenov S.S.
(Ph.D., associate professor, professor of technical communication and automation in S.M. Budjonny Military Academy of the Signal Corps)

Sinicyn E.A.
(Ph.D., Professor, Head of the Research Department of JSC "The All-Russian research institute of radio equipment")

Shatrakov Y.G.
(Ph.D., Professor, Honored Worker of Science, Scientific Secretary of JSC "The All-Russian research institute of radio equipment")