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Evaluation of PPN parameter Gamma as a test of General Relativity using SLR data Ludwig Combrinck HartRAO 16 th International workshop on laser ranging.

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Presentation on theme: "Evaluation of PPN parameter Gamma as a test of General Relativity using SLR data Ludwig Combrinck HartRAO 16 th International workshop on laser ranging."— Presentation transcript:

1 Evaluation of PPN parameter Gamma as a test of General Relativity using SLR data Ludwig Combrinck HartRAO 16 th International workshop on laser ranging Poznan, Poland, October 2008 HartRAO/NRF

2 2

3 3 Gamma estimated as a solve-for parameter in least-squares sense RMS of O-C used as criteria for filter to reduce effect of mismodelling SLR strength is 2-way range, and GR radial acceleration is mostly radial Results preliminary, longer time span, combination of LAGEOS/LAGEOS II and evaluation of different gravity models to follow, effects of modelling improvement should be apparent in errors

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