Bibliografie VÚGTK
Určovanie parametra skutočnej dĺžky dňa z meraní DORIS a analýza jeho časových radov
Buday, Michal ; Štěpánek, Petr ; Eliáš, Michal ; Filler, Vratislav

Publication type: anotace
Extent 8 stran


"Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) is one of the modern methods of the Space Geodesy. The estimation of the Length of the Day parameter (LOD) is introduced using the assumption that the values of other high correlated parameters are fixed. The outcome values of the estimated LOD parameter for the nine-year period are compared with the reference model IERS C04 provided by the International Earth Rotation and Reference Systems Service. The mean residual value between the LOD parameter determined from DORIS measurements and the value obtained from the IERS C04 model is 0.03 ms and the standard deviation is 0.15 ms. Using spectral and harmonic analysis, we compared the periods and amplitudes of the LOD time series, obtained from DORIS measurement and the reference model. Based on our results the amplitude of the semi-annual period signal is almost identical to IERS CO4 model whilst the amplitude of the annual period signal differs by 10 %. In case of difference between DORIS and IERS C04 the annual period represents a dominant signal."
Keywords: the least squares method ; position ; height ; LOD value ; cartographic projection

[Odkaz do RIVu]

The record appears in these collections:
Focus on VÚGTK > Staff VÚGTK > Petr Štěpánek
Focus on VÚGTK > Staff VÚGTK > Vratislav Filler
Focus on VÚGTK > Staff VÚGTK > Michal Eliaš
Documents of VÚGTK > Articles VÚGTK
Focus on VÚGTK > RIV

 Record created 2018-07-13, last modified 2018-11-27

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