TABLE 1

Error Sources in Measurement Modeling

ItemStrategyTreatment
Sagnac effectEquation (19.07) in Hauschild (2017)Corrected in data reduction
Periodic relativistic effectEquation (19.16) in Hauschild (2017)Corrected in data reduction
Shapiro effectEquation (19.14) in Hauschild (2017)Corrected in data reduction
Wind-up effectWu et al. (1993)Corrected in data reduction
Satellite antenna PCO/PCV

igs14_wwww.atx

Yaw-steering satellite attitude model

Corrected in data reduction
Receiver antenna PCO/PCVigs14_wwww.atxCorrected in data reduction
Tidal displacements

Solid Earth tides

Ocean loading

Pole tides

Refer to Petit and Luzum (2010)

Corrected in data reduction
Tropospheric delay (dry)

Zenith path delay: global pressure temperature (GPT) model + Saastamoinen model

Dry mapping function: global mapping function (GMF) model

Corrected in data reduction
Ionospheric delay (1st-order)IF linear combinationEliminated
Ionospheric delay (higher-order)NoneIgnored
Tropospheric delay (wet)Wet mapping function: GMF modelEstimated in data filtering
Satellite state errorDynamical model in Section 2.2Estimated in data filtering
Satellite clock errorEpoch-wise parameterEstimated in data filtering
Receiver clock errorEpoch-wise parameterEstimated in data filtering