CASPIAN JOURNAL

MANAGEMENT AND HIGH TECHNOLOGIES

Increasing positioning accuracy in the area for low dynamic mobile objects using informationion from the ionosphere monitoring system

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Katkov Ye.K. Increasing positioning accuracy in the area for low dynamic mobile objects using informationion from the ionosphere monitoring system // Caspian journal : management and high technologies. — 2017. — №2. — pp. 145-155.

Katkov Ye.K. - post-graduate student, North-Caucasian Federal University, 1 Pushkin St., Stavropol, 355047, Russian Federation, kep26rus@mail.ru

The problems of reducing the error in positioning mobile objects using information from satellite radio navigation systems (SRNS) in the event of artificial ionospheric formations (AIFs) are considered in the paper. It is shown, that in this case, to improve positioning accuracy, it is advisable to use a stationary information ionosphere monitoring system (IIMS). This system, receiving navigation signals from all visible navigation space vehicles, takes measurements, based on which a conclusion about presence of AIFs in the visible part of the celestial hemisphere, can be made. The set of measurements to be taken by stationary IIMS for determine the characteristics of high ionization areas of the ionosphere, as well as their coordinates, is proposed. Basing on the results of monitoring ionosphere, we propose a methodology of estimating errors in determining pseudorange to those navigation space vehicles, whose signals passes through the AIFs and undergoes distortions up to frequency selective fade of the signal. These corrections are proposed to be handed out to consumers of SRNS, who are users of the IIMS. Taking into consideration these corrections can significantly improve the accuracy of objects positioning. The proposed methodology does not require a serious complication of the consumers navigation equipment, except providing communication with the IIMS.

Key words: спутниковые радионавигационные системы, размер ионосферных неоднородностей, искусственные возмущения ионосферы, погрешность определения псевдодальности, информационная система мониторинга ионосферы, погрешность позиционирования, полоса когерентности канал