Abstract
Today, the list of applications that require accurate operational positioning is constantly growing. These tasks include: tasks of managing groups of Autonomous mobile robots, geodetic tasks of high-precision positioning, navigation and monitoring tasks in intelligent transport systems. Satellite navigation systems are a data source for operational positioning in such tasks. Today, global and local satellite navigation systems are actively used: GPS, GLONASS, BeiDou, Galileo. They are characterized by different completeness of satellite constellation deployment, which determines the accuracy of operational positioning in a particular geographical point, which depends on number of satellites available for observation, as well as the characteristics of the receiver, landscape features, weather conditions and the possibility of using differential corrections. The widespread use of differential corrections at the moment is not possible due to the fact that number of stable operating reference stations is limited - the Earth is covered by them unevenly; reliable data networks necessary for the transmission of differential corrections are also not deployed everywhere; budget versions of single-channel receivers of the navigation signal are widely used, which do not allow the use of differential corrections. In this case, there is a problem of operational choice of the system or a combination of satellite positioning systems, providing the most accurate navigation data. This paper presents a comparison of static and dynamic methods for selecting a system or a combination of satellite positioning systems that provide the most accurate definition of the object's own coordinates when using a single-channel receiver of navigation signals in offline mode. The choice is made on the basis of statistical analysis of data obtained from satellite positioning systems. During the analysis, the results of post-processing of data obtained from satellite navigation systems and refined with the use of differential corrections of navigation data were compared.
Highlights
Global and local satellite navigation systems are actively used: Global Positioning System (GPS), GLONASS, BeiDou, Galileo. They are characterized by different completeness of satellite constellation deployment, which determines the accuracy of operational positioning in a particular geographical point, which depends on number of satellites available for observation, as well as the characteristics of the receiver, landscape features, weather conditions and the possibility of using differential corrections
The widespread use of differential corrections at the moment is not possible due to the fact that number of stable operating reference stations is limited - the Earth is covered by them unevenly; reliable data networks necessary for the transmission of differential corrections are not deployed everywhere; budget versions of single-channel receivers of the navigation signal are widely used, which do not allow the use of differential corrections
This paper presents a comparison of static and dynamic methods for selecting a system or a combination of satellite positioning systems that provide the most accurate definition of the object's own coordinates when using a single-channel receiver of navigation signals in offline mode
Summary
Попов С.Г., Заборовскй В.С., Курочкин Л.М., Шарагин М.П., Чжан Л. В этом случае возникает задача оперативного выбора системы или комбинации систем спутникового позиционирования, предоставляющей наиболее точные навигационные данные. Приведено сравнение статического и динамического методов выбора системы или комбинации систем спутникового позиционирования, обеспечивающих наиболее точное определение собственных координат объекта при использовании одноканального приемника навигационных сигналов в автономном режиме (без использования сторонних поправок). Анализ точности определения координат и выбор наиболее точной системы спутникового позиционирования или комбинации таких систем вызывает интерес как у исследователей, так и у специалистов, решающих прикладные задачи. Анализ зависимостей доступности различных спутниковых систем позиционирования и точности предоставляемых ими данных, от периода наблюдения, состояния конкретной группировки или их комбинаций, позволяет сформировать рекомендации для выбора комбинации систем спутниковой навигации, предоставляющей наиболее точные данные в конкретный момент в заданной географической точке. Целью данной работы является сравнение методов оперативного выбора системы или комбинации систем спутникового позиционирования, предоставляющей наиболее точные навигационные данные.
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