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Based on the theory of dynamic orbit determination, two different station distributions were analyzed to study their impact on BDS precise and real-time orbit determination.
It is planned to apply dynamic orbit integration and an either separate or combined adjustment for CHAMP and GPS satellites' routine rapid orbit determination.
For this purpose we make use of classical dynamic orbit determination, supported by the analysis of satellite-to-satellite tracking observations.
As is known, the orbit accuracy depends on the force models used in the dynamic orbit determination, but the models for the surface forces acting on low-Earth satellites are uncertain.
Orbit differences suggest that the largest remaining errors in the Jason-2 dynamic orbit solutions are due to radiation pressure mis-modeling and variations in the geopotential not captured in the GRACE-derived annual terms.
Second, the results of reduced dynamic orbit determination using BDS/GPS code and phase measurements, standalone BDS SPP (Single Point Positioning) kinematic solution and real-time orbit determination using BDS/GPS code measurements are presented and analyzed.
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The differences between kinematic and dynamic orbits can serve as a measurement for geocenter.
The precision at which the dynamic orbits are determined thus must surpass the precision of the ranging observations.
We find that the best dynamic orbits show altimeter crossover residuals of 5.524 cm over cycles 7 15.
This study investigates the computation of dynamic orbits, which are used for multiple purposes in gravity recovery.
Then the dynamic orbits of the system are observed using the bifurcation diagrams with the mesh stiffness and the rotational speed ratio as control parameters.
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