Krämer, R. and Hahn, J. and Schmidt, L. (1999) Results in GPS system time restitution with Kalman filters. In: Proceedings of the 1999 Joint Meeting of The EUROPEAN FREQUENCY AND TIME FORUM and The IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM, IEEE Catoalog No. 99CH36313, pp. 255-258. The European Frequency and Time Forum, Besancon/France, 13-16 April 1999.
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The paper describes the restitution of the GPS system time by using a Kalman filter which calculates the GPS system time as well as the clock rate of the used local clock. For improving the quality of the filter results, the algorithm uses the data from all visible satellites, not just from a fixed lower limit of satellites (for example 4). For that the Kalman filter algorithm had to be modified in a manner to handle observation vectors of time variant order. The paper outlines the principle of operation of this Kalman filter and the system and observation model used. The capability of the filter will be shown by tests.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Results in GPS system time restitution with Kalman filters|
|Journal or Publication Title:||Proceedings of the 1999 Joint Meeting of The EUROPEAN FREQUENCY AND TIME FORUM and The IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM|
|Volume:||IEEE Catoalog No. 99CH36313|
|Page Range:||pp. 255-258|
|Keywords:||Kalman filter, system time, GPS|
|Event Title:||The European Frequency and Time Forum, Besancon/France, 13-16 April 1999|
|Organizer:||13th European Frequency and Time Forum|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W KN - Kommunikation/Navigation|
|DLR - Research area:||Space|
|DLR - Program:||W KN - Kommunikation/Navigation|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Institute of Communication and Navigation|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||16 Sep 2005|
|Last Modified:||06 Jan 2010 20:41|
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