Content №2-2012

Assessment of changes in the integrated availability of communications for non-geostationary satellite subscribers of Globalstar system, when orbital group is changing.

M. Ivankovic, D. Shevchuk

Abstract
The task of selecting a location for the launch of spacecraft (SC) is relevant in any multisatellite communication systems during the formation of orbital group and its replenishment. Different relative positions of the spacecraft in the orbital grouping by has different effects on characteristics of the system of customer service on the earth’s surface. As an indicator of customer service satellite system integrated access connection (IDC) is selected. Analysis of the IDC changes is carried out by the example of the Globalstar satellite system.

References
1. Akimov A.A., Shevchuk D.V. Evaluation of the integral accessibility of consumer communications satellite “Iridium” with the failure of the spacecraft. Radio, 2011, No1.

2. Kornfeld I.P., Sinai Y.G., Fomin S.V. Ergodic theory. M.: Nauka, 1980.

3. Mashbits L.M. Computer mapping and satellite areas. M.: Radio I Svyaz, 2000.

4. Description of the Globalstar system, version E. In 2000.

Evolution of worldwide tracking and data collection satellite system Argos

A.V. Kozlov, MTUCI, kozlov37@gmail.com; A. V. Pestryakov, Moscow Technical University of Communications and Informatics (MTUCI), a.v.pestryakov@mail.ru

Abstract
Argos is a global satellite-based location and data collection system. Detailed description of Argos DCS (data collection system) and Argos-3 DCS is presented. Advantages and disadvantages of those systems with improvements of Argos-2 and Argos-3. Comparison characteristics of Argos, Argos-2, Argos-Next and Argos-3 is presented.

Keywords: Argos, Argos-2, Argos-3, low-orbit satellite group, tracking and data collection system.

References
1. ARGOS Platform Transmitter Terminal (PTT) and ARGOS Platform Message Transceiver (PMT). General Specification. ADII-SP-423-601-CNES, Issue 1, Revision 2, September 12, 2003.

2. Argos/GPS Transmitter Functional Specifications for Fishing Vessel Monitoring. FVT 100 Model. CLS.DO/NT/99.144, Version 2, Rev.0, November 8, 2004, Toulouse.

3. Argos User’s manual // Argos – Worldwide tracking and environmental monitoring by satellite.2008. URL: http://www.argos-system.org/documents/userarea/argos_manual_ en.pdf (last reference: 10.01.2012).

4. Argos-3 The New Generation // Argos – Worldwide tracking and environmental monitoring by satellite.2008. URL: http://www.argos-system.org/documents/publications/brochures/argos3_metop_en.pdf (last reference: 10.01.2012).

5. Argos DCS (Data Collection System) // Earth Observation portal. 2011. URL: http://events.eoportal.org/presentations/224/13266.html (last reference: 10.01.2012).

The quality of the network of SPS as a pledge of safe and accurate navigation

Maksimenko V.N., Filippov A.A., Moscow Technical University of Communications and Informatics (MTUCI)

Abstract
Approach to assessing the quality of cellular mobile communications to ensure a guaranteed performance monitoring and dispatching systems of special vehicles movement is considered.

References
1. Maksimenko V.N., Faleeva O.I.Monitoring: from quality management to VAS”, InformCourier-Svyaz, 2006. No2. Pp. 84-85.

2. ITU-T. TELECOMMUNICATION STANDARDIZATION SECTOR. (06/2004). “Telecommunications management network. Enhanced Telecom Operations Map® (eTOM) The business process framework”, M3050.1 @ ITU 2004.

3. Nagaev E. eTOM: a structural model of business processes for service providers. M.: Mobile Systems, No 5, 2005.

4. Varzhapetyan A.G. Qualimetry: Textbook / SPbSUAP. St. Petersburg, 2005. 176 p.: ISBN 5-8080-0138-9.

5. Recommendations ITU-T P.800.1: “Mean Opinion Score (MOS) terminology”.

6. Maksimenko V.N., Filippov A.A. The data center in the structure of the quality management system mobile operator, T-Comm – Telecommunications and Transportation, №6, 2008. Pp.47-51

USING MODERN MEASURING AND INFORMATION SYSTEMS FOR THE MEASUREMENT AND ESTIMATION OF MOBILE DIGITAL RADIO COMMUNICATION RANGE

Kubankov A.N., Rupasova M.N., Moscow Technical University of Communications and Informatics (MTUCI)

Abstracts
The problem is reliability of radio communication range estimation which depends on the volume of statistics since gathering calculated and experimental information on the quality of tested radio channels, its subsequent processing and displaying intermediate and end results as well as storing and saving the end results and the whole collected file (statistics) with the results of all experiments are needed. The approaches to the measurement and estimation of mobile digital radio communication range are reviewed, the disadvantages of the considered methods being revealed. It is noticed that the prospective approach is the application of synthesized information and measuring systems. Nowadays there are no information systems which, on the one hand, carry out the whole class of necessary measuring tasks and, on the other hand, have the user interface corresponding to modern standards. The efficient implementation of measuring system construction is possible in the form of virtual instruments (VI) which are the special applied programs carried out by the processor of a standard PC. The measuring accuracy and range having been reached by means of VI today appear to be quite sufficient for solving many practical problems, especially for field measurements. The principal advantage of VI is that all measurements are carried out in an automatic mode, speed, complex processing and display of the information being provided.

Keywords: range of radio communication, measurement, measuring and information system, virtual instruments, statistics volume.

Referencеs
1. Voroshin A.V., Tikhonov E.P. Methods for determining range of mobile radio VHF // Proceedings of V International STC “Advanced technologies in the means of information transfer”. Vladimir, 2005. Pp.127-128.

2. Prikhodko V.I. Range and quality of the radio // Training and Information Portal “Technology and communication protocols”, 2008-2009, online resource: www.connect-portal.info/radio_daln.html.

3. Dolukhanov M.P. Far VHF propagation. M.: Svyaz’izdat, 1992. 177p.

4. Hyummel K., Shearman S. Virtual instruments and design of DSP-systems // Components and Technology, 2008. No 3. Pp.38-42.

5. Kubankov A.N., Lorey N.A., Provotorskiy I.M., Rupasova M.N. The collection, processing and presentation of information about the parameters of communication cables with the help of virtual instruments // Special Equipment, No 3, 2011. Pp.44-47.

6. The official website of “National Instruments” [online resource]: www.ni.com.

7. Elkin M. Comparing the range of the radio channel systems in different ranges // Security Systems, No 3, 2010.

8. Strelkov A. Methods for measuring the distance to the SAM radars. Internet resource: www.bestreferat.ru/ referat-35822.html.

9. Vorobiev S.V. [Online resource]: Basic radiopathes and evaluation ranges Radio. www.sagatelecom.ru/encyclopedia/protocol/detail.php?SECTION_ID=28&ID=94.

Research of stability of devices of electronic technics to magnetic fields in an open space

Khlopov B.V., FGUP “CNIRTI im. academika A.I. Berga”, the Russian Federation, 208_otd@mail.ru

Abstract
Stability semi-conductor radio-electric products of the electronic technics to exterior constants, variable, impulse magnetic and to electromagnetic fields, on the bench imitating on the Earth in an industrial location magnetic field influence in an open space is considered. It is justified, under operating conditions in an open space, possibility of influence of magnetic fields on regular devices and semi-conductor radio-electric products of the electronic technics. It is shown that on devices, located on antenna panels, the total magnetic field, with a changing vector of intensity influences. The developed and made bench for creation of constants, variable, impulse magnetic and the electromagnetic fields, providing simulation of influence by magnetic fields of the Earth and the electromagnetic fields created by magnetic systems, allocated on antenna panels of the space vehicle is presented. On a dimensional mass electrical equivalent of the antenna panel with regular layout semi-conductor radio-electric products of the electronic technics researches and the analysis of influence magnetic and electromagnetic fields on electrophysical properties of the transistor as basic element of radio-electronic equipment are conducted. It is shown that the devices fulfilled on semi-conductor elements and allocated on an equivalent of the antenna panel of the space vehicle, are steady against influence constant, slowly changing and with certain values of intensity of an impulse magnetic field. At the pulsewise-periodic electromagnetic influence based on creation in semi-conductor structure of additional internal electric fields, initial charges promoting reallocation, it is watched tunnel or avalanche breakdown the structures leading to failures radio-electric products of the electronic technics.

Referencеs
1. Khlopov B.V., Fesenko, M.V., Kuzminykh A.S.Assessment of the impact of external factors affecting the electronic equipment of spacecraft // Proceedings of the VII International Conference of Young Professionals “New materials and technologies in aviation and space technology.” Federal Industry Agency Federal Space Agency “KOMMETPROM” PKI “Mashpribor.” Korolev, Sat. Part II, 2008, p.61.

2. Verkhoturov V.I.Physical processes in a complementary part-board electronics in low-level ionizing radiation exposure of outer space. Moscow Engineering Physics No2, 2004.

3. Amiantov A.S., Zaitsev A.N., Odintsov V.I., Petrov V.G. Variation of the magnetic field of the Earth. Digital data base of magnetic observatories Russia for 1984-2000 years. on CD-ROM. IZMIRAN, Moscow, 2001.

4. Afraimovich EL, EI Astafieva, Bernhardt O., Demyanov VV, et a.l Midlatitude flicker amplitude signals and GPS function GPS failures on border auroral oval // Math. universities. Radiophysics, 2004. V.48, No 6. Pp.509-526.

5. Hoffmann-Wellenhof B., H. Lichtenegger, J. Collins. Global Positioning System: Theory and Practice. New York: Springer-Verlag Wien, 1992. 327 p.

6. Afraimovich E.L., Astafieva E.I., Bernhardt O.I., Demyanov V.V., et al. Midlatitude flicker amplitude signals and GPS function GPS failures on border auroral oval // Math. universities. Radiophysics, 2004. V.48, No 6. Pp. 509-526.

7. Afraimovich E.L., Demyanov V.V., Kondakova. Degradation of performance of the navigation GPS system in geomagnetically disturbed conditions // GPS Solutions, 2003. V.7, No2. P.109-1196.

8. Doherty, P.H., S.H. Delay, C.E. Valladares and J.A. Klobuchar. Ionospheric Scintillation Effects in the Equatorial and Auroral Regions / / Proceedings of International Beacon Satellite Symposium, June 4-6, 2001, Boston College, Institute for Scientific Research, Chestnut Hill, MA, USA. 2001. Pp. 328-333.

9. Skone, S., and M. de Jong. The impact of geomagnetic substorms on GPS receiver performance / / Earth, Planets and Space. V. 52. P. 1067-1071. 2000. Skone, S. and M. de Jong. Limitations in GPS receiver tracking performance under ionospheric scintillation / / Physics and Chemistry of the Earth. Part A 26/6-8. 2001. Pp. 613-621.

10. Ledvina B.M., Makela J.J., Kintner P.M. First observations of intense GPS L1 amplitude scintillations at midlatitude // Geophys. Res. Lett. 2002. V. 29, No4. 10.1029/2002GL014770.

11. Global satellite navigation system GLONASS. Edited by V.N. Kharisova, A.I. Perov, V.A. Boldin. Moscow: Publishing House of IPRZHR, 1998. 400 p.

12. Landau L.D., Lifshitz E.M. Electrodynamics of continuous media. Moscow: Nauka. 1982. P.620.

13. Khlopov B.V. Fesenko, M.V., Kuzminykh A.S. Space and information protection in local communication networks // Proceedings of the International Conference, St. Petersburg, October, 2011. Pp. 29-31.

14. Khlopov B.V. Magnetic systems for data destruction equipment on magnetic media // International Conference “Modern information and electronic technologies”, Odessa, 2010. – P.99.
15. Khlopov B.V., Lobanov B.S., Bondarev Y.S., Kuzminykh A.S. Control method in information erasure LANs // Electronic Journal Herald MAI, V.18, No3, 2011. Pp.155-160.

16. Khlopov B.V. Mityagin Al.Yu. Fesenko, M.V. Krytov M.M. Features erase records inhomogeneous semiconductor carriers // Proceedings of the International Conference “Magnets and magnetic materials”, M., 2007, information-analytical bulletin, separate issue 1. Pp. 300-308.

17. Khlopov B.V., Fesenko M.V. Eraser recorded information / Patent № 2346345 from 10.02.09, the (priority from 26.04.07 g). Bull. Number4.

METHOD OF INCREASING CHANNEL CAPACITY OF NONSTATIONARY NERROWBAND RADIOCHANNEL IN AUTOMOTIVE ADAPTIVE HF BAND COMMUNICATION SYSTEM

Patshin A.V., Agilent Technologies inc. (USA) Application engineer, alexander_patshin@agilent.com

Kubanov V.P., Povolzhsky state university of telecommunication and informatics First pro-rector, kubanov@psati.ru

Spodobaev Y.M., Povolzhsky state university of telecommunication and informatics, Department of electrodynamics and antennas chairman, spod@psati.ru

Keywords: channel capacity, adaptive system, adaptation effectiveness, efficiency criterion, signal to noise ratio.

Abstract
Method of increasing the capacity of narrowband HF radio by the use of adaptation to information transmission rate with a fixed rate of errors was proposed. The impact of signal-code structures used adaptive radio system, the efficiency of bandwidth communication channel. Performance measurement of adaptation of introduced and justified, the method of determining the optimal number of signal-code constructions proposed. The conditions of applicability and feasibility of using adaptive communication mode specified. Comparative data for the numerical simulation of adaptive and maladaptive communication systems.

References
1. Fink L.M. The theory of transmission of discrete messages. Moscow: Sov. Radio, 1970. 728 p.

2. GOST R 51820-2001 signal conversion devices for radio frequency tone. Types, specifications and data interface. 15p.

3. Bernard Sklar. Digital communication. The theoretical basis and practical application. Publ. 2nd, rev.: Translation from English. M.: Publishing house “Williams”, 2004. 1104 p.

4. Kennedy R. Communication channels with fading and scattering. Moscow: Sov. Radio, 1973. P.304.

5. UPS-4, 8KB-M: A brief description / Penza Federal State Unitary Enterprise Scientific Research Institute of Electrical Engineering.

Methods to improve the efficiency of frequency resources in a wireless broadband communication systems

Zaitseva Yu.M.

Abstract
In recent years, operators of data networks faced the problem of limited spectrum resources. Number of service users BSHPD is rising rapidly increases the need to provide applications that require high frequency resources. However, regulators due to the limited frequency resources represent only a small limited range of frequencies for commercial use. As a result, carriers are competing savagely for each kHz of frequency resources.

References
1. J.G. Andrews, A. Ghosh, R. Muhamed, Fundamentals of WiMAX: understanding broadband wireless networking, Prentice hall, 2007.

2. The Advantages of TDD over FDD in Wireless Data Applications, Raze technologies, 2001 www.razetechnologies.com/text_only/TDDvsFDD.htm.

3. Philip G. Lawrey, Thesis “Adaptive Techniques for Multiuser OFDM”, 2001.

4. V. Chandrasekhar, J.G. Andrews, A.Gatherer, “Femtocell networks: a servey”, unpublished. [online].

Analysis of statistical characteristics of user arrival process to the testing service

Albov N.Y., Moscow Technical University of Communications and Informatics (MTUCI)

Abstract
Interarrival time distribution of the user’s requests to the test service is analyzed. By using KS-method we fit the measurement results to theoretical probability distribution. It is found that inter-arrival time distribution is log logistic distribution. The homogeneity hypothesis for interarrival times is verified. Clustering of the original subject area on the base of log logistic parameters is carried out.

Keywords: interarrival times, think-times, distribution fitting, KS-method.

References
1. Tyurin Yu.N. Makarov A.A. Analysis of the data on your computer / Ed. V.E.Figurnova. Moscow: INFRA-M, 2003. 544 p.

2. Barseghyan A.A., Kupriyanov M.S., Stepanenko V.V. Holod I.I. Methods and models for data analysis: OLAP and Data Mining. St. Petersburg.: BHV-Petersburg, 2004. 336 p.

3. Loesing K. Sandmann W. Wilms C. Wirtz G. Performance Measurements and Statistics of Tor Hidden Services // International Symposium on Applications and the Internet, 2008. SAINT 2008. Pp.1-7.

4. Allen B. Downey. Lognormal and Pareto distributions in the Internet // Computer Communications, 2005 Vol. 28. Issue 7. Pp.790-801.

5. Gou-feng Zhao, Qing Shan, Shasha Xiao, Chuan Xu. Modeling Web Browsing on Mobile Internet // Communications Letters. IEEE Vol.15. No10. Pp.1081-1083. October 2011.

6. Wim J. van der Linden. A Lognormal Model for Response Times on Test Items // Journal of Educational and Behavioral Statistics, 2006 Vol.31 No 2. Pp.181-204.

Assessment of noise and loss minimization a multi-channeled inaccuracies in the detector setting a priori signals

Rusanov V.E., Moscow Technical University of Communications and Informatics (MTUCI)

Abstract
The work is devoted to studying the stability of the detection algorithm of quasi deterministic signal to inaccuracies in a priori assignments of its parameters. Algorithm for computing the likelihood ratio for a signal quasi deterministic considered as an object of study, which was averaged over the unknown initial phase.

References
1.Tikhonov V.I., Col’man N.K. Nonlinear filtering and quasi-signal reception. Sov. Radio, 1975. 704 p.

2.Oppenheim, A., Schafer R. Digital Signal Processing. Moscow: Technosphere, 2007. 856 p.

3.Levin B.R. The theoretical foundations of statistical radio engineering. Book One. Moscow:Sov. Radio, 1969. 752 p.

4.Nicolskiy S.M. A course in mathematical analysis. M. Fizmatlit,2001. 592 p.

5.E. Jahnke, F. Emde, F. Lesh, Special Functions, translated from German. Moscow: Nauka, 1968. 344 p.

Evalution of time and energy parameters of low-frequency random pulse with arbitrary modulating function

Svidchenko S.S., Moscow Technical University of Communications and Informatics (MTUCI)

Abstract
Synthesis and analysis of single-channel quasi-optimal algorithm for estimating the time of arrival, the expectation and variance of a Gaussian random low-frequency pulse signal with an arbitrary modulation function in white noise is made. The methods of statistical modeling efficiency of the meter is defined and established the limits of applicability of asymptotically exact formulas for its performance.

References
1.Chernoyarov O.V., Rashitov M.F. Effective methods of random pulse signal of arbitrary shape with an unknown time of arrival / / Bulletin of the Moscow Power Engineering Institute, 2010. No 5.

2.Kulikov E.I., Trifonov A.P. Estimation of signal parameters on the background noise. Moscow: Sov. Radio, 1978. 296 p.

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4.Zakharov A.V. Optimization algorithm for detecting a fluctuating radio pulse with an unknown time of arrival // Herald of the Voronezh State University. Series: Physics. Mathematics, 2005. No1. Pp. 46-56.

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The institutionalization of entrepreneurship as a system-forming factor of information security

Elena Grishanova, candidate of economic science, Assistant professor, manager of chair “Political Economy and Political Science” department, Moscow Technical University of Communications and Informatics

Yaroslavna Artamonova, candidate of sociological science,  Assistant professor of  “Political Economy and Political Science” department, Moscow Technical University of Communications and Informatics

Abstract
The article raises up an actual question of modern science-entrepreneurship institutionalization as system-forming factor of information security. The article covers the question of the modern society information security methodologies in the context of entrepreneurship institualization. Factors, influencing the process, include: religion, national features of economic actors, national policy, economic environment, defining individual interests. Identification of the individual with the role that he performs in the group and with the position that lets him implement his business functions.

Keywords: Information security, entrepreneurship institutionalization, economic actors, economic conditions, national policy, objective (subjective) reality, economic culture, modern market, national regulation.

References
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