Seminar Title:	Development of a Satellite Orbit Simulation Toolkit for Future Geodesy Missions
Speaker:	Dr.Vitali Mueller
Affiliation:	(Albert-Einstein-Institute (AEI), Hannover, Germany)
When:	Tuesday Morning, Mar. 1st, 11:00 a.m
Where:	Room 327, Office Block, 2 West Beijing Road (PMO, CAS)
	Welcome to Attend
	( PMO Academic Committee & Academic Circulating committee)

　Abstract　　

 

The GRACE (Gravity Recovery and Climate Experiment) satellite pair was launched in 2002 to determine Earths gravitational field by measuring the inter-satellite distance with a K-Band microwave ranging system. The GOCE satellite, equipped with sensitive gradiometer and injected into orbit in March 2009, is another milestone in Earth observation mission.

A future geodesy mission could use a laser base inter-satellite link to improve the ranging precision, so recently the Albert-Einstein-Institute began to design a laser interferometer aiming for an accuracy of about 50 nm/sqrt(Hz). Furthermore an Orbit Simulation Toolkit was developed, to provide parameter like Doppler shifts in laser frequency induced by the relative satellite velocity.

In this talk I will present my work on satellite orbit simulations. Next to the extent of the simulator, which supports various perturbation effects like drag and solar radiation pressure, I will present actual methods to model Earths Gravity field precisely. Furthermore I will describe applications and show simulation results, obtained with the simulator.