Influence of GPS/GLONASS Differential Code Biases on the Determination Accuracy of the Absolute Total Electron Content in the Ionosphere

Yasyukevich, Y.V.; Mylnikova, A.A.; Kunitsyn, V.E.; Padokhin, A.M.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 марта 2016 г.

Авторы: Yasyukevich Yu V., Mylnikova A.A., Kunitsyn V.E., Padokhin A.M.
Журнал: Geomagnetism and Aeronomy
Том: 55
Номер: 6
Год издания: 2015
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 763
Последняя страница: 769
DOI: 10.1134/S001679321506016X
Аннотация: Systematic error arises when the total electron content (TEC) is estimated with the simultaneous use of phase and group GPS/GLONASS measurements. This is related to the different signal propagation times at L1 and L2 frequencies in the radio frequency path of the transmitting equipment, the so-called differential code biases. A differential code bias lasting 1 ns results in an error of ~2.9 TECU when TEC is determined. Differential code bias variations on a long time interval, which were obtained at the CODE laboratory, were analyzed. It has been found that the systematic variation in these biases and considerable seasonal variations apparently caused by the environmental state (temperature and humidity), which sometimes reach 20 TECU (in TEC units), are observed for several stations. The algorithm for determining differential code biases at an individual station and the results of correction for absolute oblique TEC are also presented. This algorithm demonstrated that it can adequately operate in different regions of the globe at different solar activity levels.
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Influence of GPS/GLONASS Differential Code Biases on the Determination Accuracy of the Absolute Total Electron Content in the Ionosphereстатья

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