The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
With the development of satellite-based augmentation systems (SBAS), the dual-frequency L1/L5 observations from a number of geostationary satellites are now available. It provides the possibility of retrieving ionospheric total electron content (TEC) from these observations using the same approach as for dual-frequency GPS/GLONASS observations. In this letter, we study L1/L5 signals of American Wide...