UDK 621.396.932.1 Doi: 10.31772/2587-6066-2018-19-2-242–245
INCREASE OF DATA TRANSMISSON EFFICIENCY IN AIRCRAFT SATELLITE MONITORING
A. R. Akzigitov, A. S. Andronov, R. A. Akzigitov, V. V. Peremishlennikov, D. V. Dmitriev
Reshetnev Siberian State University of Science and Technology; 31, Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037, Russian Federation
Satellite systems are one of the most common methods of tracking various objects around the world. There are vari-ous types of satellite systems for different purposes, but their common feature is data transmission by radio signal. The atmosphere of our planet is nonuniform and its every layer has some characteristics which impede data transmission. In case of insufficient power supply the transmission is practically impossible. That is why there should be worked out special methods and algorithms able to mitigate the atmospheric effect on the signals of the aircraft monitoring devices. The ionosphere, in particular, is the main cause of errors in determining the object’s location. For “Iridium” satellites that receive signals from “Iridium 9602” module at frequency of 1616–1625.5 MHz the ionosphere influence induces the alteration of the signal power due to the inhomogeneity of charged particles. The article presents the calculation of attitude data transmission loss in space as they are transmitted by “Iridium 9602” transceiver up to heights of 450, 500 and 600 km. The proposed method is based on modeling the current map of the total electronic content of the ionosphere. On the basis of this model, a correction of determining the monitored object’s location can be made. Today there are several centers performing calculation of total electronic content of the ionosphere. The calculation results are in free access. Thus, having the initial data obtained from the maps of the total electronic content of the ionosphere and the algorithm for making corrections, it is possible to correct the data while solving navigation problems. In particular, the GEMTEC model can be used, as its source of data is a map of total electronic content of the atmosphere.
Keywords: Iridium, monitoring, ionosphere, GEMTEC, error.
References

1.     Abolits A. I. Sistemy sputnikovoy svyazi. Osnovy strukturno-parametricheskoy teorii i effektivnost’ [Satellite communication systems. Fundamentals of structural-parametric theory and efficiency]. Moscow, ITIS Publ., 2004, 426 p.

2.     IRIDIUM. Uslugi peredachi dannykh kompanii Iridium. Belaya kniga. Versiya 1.1.2 [IRIDIUM. Data transmission services of “Iridium”. White Paper. Version 1.1.2] (In Russ.). Available at: http://iridium.steccom.ru/ wp-content/uploads/2012/09/Iridium-Data-Services-White- Paper-11.1.2_RU.pdf (accessed 15.04.2016).

3.     Lazarev A. I., Nechaev E. E. [Status and development of satellite communication and navigation systems]. Nauchnyy vestnik Moskovskogo gosudarstvennogo tekhnicheskogo universiteta grazhdanskoy aviatsii. 2010, No. 159, P. 32–43 (In Russ.).

4.     Multi-Link Iridium Satellite Data Communication System. Available at: http://citeseerx.ist.psu.edu/viewdoc/ download?doi=10.1.1.129.3230&rep=rep1&type=pdf (accessed 17.04.2016).

5.     Error Sources. Available at: http://www.novatel.com/an-introduction-tognss/chapter-4- gnss-error-sources/error-sources/ (accessed 17.04.2016).

6.     Hutorova O. G. Zondirovanie atmosfery i ionosfery radiosignalami sputnikovykh navigatsionnykh system [Sounding of the atmosphere and ionosphere with radio signals of satellite navigation systems]. Kazan, Kazan Federal University Publ., 2011, 117 p.

7.     Tanjila F. Performance Analysis of Low Earth Orbit (LEO) Satellite Link in the presence of Elevation Angle, Fading, And Shadowing. Bangladesh, BRAC University Publ., 2009, 66 p.

8.     Zaharov F. N., Krutikov M. V. [Comparison of accuracy of navigation signal time delay in different models of refractive index vertical profile]. Doklady Tomskogo gosudarstvennogo universiteta system upravleniya i radioehlektroniki [Reports of Tomsk state university of control systems and radio electronics]. Tomsk, TUSUR, 2014, P. 7–12 (In Russ.).

9.     Kacura A. V., Akzigiov A. R., Andronov A. S., Strokov D. E. et al. [Development of onboard device for aircraft satellite monitoring]. Vestnik SibGAU. 2016, Vol. 17, No. 1, P. 125–130 (In Russ.).

10.      Tsisar L. [The best satellite communication expands standards]. Tekhnologii i sredstva svyazi. 2008, No. 64, P. 40–42 (In Russ.).

11.      Iridium 9602 SBD Transceiver Developer’s Guide. Revision 6.0. Available at: http://nearspace.ru/ doc/Iridium-9602-SBD-Transceiver-Product-Developers-Guide.pdf (accessed 18.04.2016).

12.      Dorezyuk N. I. [Recommendations for the choice and operation of feeders]. INFORMOST – radioelektronika i telekommunikatsii. 2002, No. 5(23), P. 1–8 (In Russ.).

13.      Bylinin K. E., Gorbachev O. A., Ivanov V. B., Gefan G. D. [Global empirical model of ionospheric error correction in satellite navigation systems]. Nauchnyy vestnik MSTU CA. 2011, No. 171, P. 151–156 (In Russ.).

14.      Najman P. Nature of the GNSS ionospheric error and modeling of mid-latitudes ionospheric structures in relation to the space weather. Kvalifacijski Doktorski Ispit, August 2012.

15.      Ivanov V. B., Gorbacev O. A., Gefan G. D. The GEMTEC Model: Assessment of Quality of Ionospheric Correction in Satellite Radio Navigation Systems. Consumer Electronics Times. 2012, Vol. 1, No. 3, P. 43–46.


Akzigitov Artur Revovich – senior teacher, Reshetnev Siberian State University of Science and Technology.

E-mail: aakzigitov88@mail.ru.

Andronov Aleksandr Sergeevich – postgraduate student, Reshetnev Siberian State University of Science

and Technology. E-mail: andronov-80@mail.ru.

Akzigitov Revo Avkhadievich – Docent, Deputy Director for studies, Reshetnev Siberian State University

of Science and Technology. E-mail: akzigitov-r@mail.ru.

Peremishlennikov Vladimir Vladimirovich – postgraduated student, Reshetnev Siberian State University of

Science and Technology. E-mail: pnk-sibsau@mail.ru.

Dmitriev Danil Vadimovich – student, Reshetnev Siberian State University of Science and Technology. E-mail:

gerundiy48@gmail.com.



  INCREASE OF DATA TRANSMISSON EFFICIENCY IN AIRCRAFT SATELLITE MONITORING