IGS Reference Frames: Status & Future Improvements

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Scale Differences among IGS AC FramesScale Difference Between the solution and the RF42codemresagfzjplMITngssioJPLmitnclScale (ppb)0-2-4source: R. Ferland1000 1050 1100 1150 1200 1250 1300GPS week
¡¢¡¢Nominal Reference Frames of IGS ProductsProduct set Origin ScaleFinals:terrestrial IGS00 VLBI/SLR viaframe (SINEX) (shifted) ITRF2000 & IGS00orbitsclockscenter-of-masscenter-of-mass¡GPS (AC average)¡GPS (AC average)troposphere ambiguous GPS (AC average)(insignificant)Rapids & Ultra-rapids:allIGS00 ¢VLBI/SLR viaITRF2000 & IGS00differs by weekly geocenter offset from IGS00all scales should shift to IGS00 when “absolute” antenna phase patterns are adoptedRapid/Ultra-rapid frames respond partially to orbital dynamics & center-of-mass origin
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Page 10 and 11: IGS Combination ProceduresStep 0. A
Page 14 and 15: Summary of IGS Product Inconsistenc
Page 16 and 17: Improved IGS Reference Frame Realiz

IGS Reference Frames: Status & Future Improvements

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