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Verification of the possibility of obtaining two independent positioning from a single GNSS measurement

Citace: [] JEDLIČKA, K., ČADA, V., HEJDOVÁ, J. Verification of the possibility of obtaining two independent positioning from a single GNSS measurement. In Proceedings Vol. 1. 4th International Conference on Cartography and GIS. Albena: Bulgarian Cartographic Association, 2012. s. 355-362. ISBN: neuveden , ISSN: 1314-0604
Druh: STAŤ VE SBORNÍKU
Jazyk publikace: eng
Anglický název: Verification of the possibility of obtaining two independent positioning from a single GNSS measurement
Rok vydání: 2012
Místo konání: Albena
Název zdroje: Bulgarian Cartographic Association
Autoři: Ing. Karel Jedlička PhD. , Doc. Ing. Václav Čada CSc. , Bc. Jana Hejdová
Abstrakt EN: The basic rule of geodesy says: ?one measurement is no measurement?. It is crucial to have verified coordinates of survey control points and measurements. There has been set up a methodics for accepting GNSS measurements for cadastral purposes in Czech Republic. This methodics requires two independent measurements. GNSS measurements in different times (interval of at least one hour) or combination of GNSS and terrestrial measurement is accepted as independent measurements. Fulfilling these rules is time consuming and does not allow exploiting all potential of global navigation satellite systems. Thus the paper proposes a method of obtaining two independent positioning from a single GNSS measurement based on computing positioning from a large number of available satellites. The principle of the method is based on separating the measurements from GPS NAVSTAR and GLONASS satellites while computing the positioning. Therefore there are two different positioning (one from GPS NAVSTAR the other from GLONASS), whose can be considered as independent. The paper describes designed methodics for obtaining two independent positioning from a single GNSS measurement. Further the paper describes an experiment in which the hypothesis has been tested. Finally there are interpreted results from the experiment in the paper. Based on the results it is possible to say that the hypothesis was true and that the method can be used, if there are enough satellites (at least four GPS NAVSTAR and four GLONASS) and the observation time is sufficient.
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