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STSE-GOCE Height System Unification Final Meeting, 19-20 Feb 2013, ESTEC, The Netherlands

Join the STSE-GOCE final meeting at ESTEC in The Netherlands to discuss the unified height system. Key topics include the usage of GOCE data, gravimetric geoid improvements, and the enhancement of the gravity field. Learn about the benefits of combining satellite and airborne data for more accurate surface assessments. Explore systematic error models in NAVD88 and the GRAV-D Collection, aiming to reduce residuals in hybrid geoid models. Gain insights into data biases, merging satellite models, and the need for further tapering tests. Compare results with GGM02S/GPS and NAVD88 to improve accuracy. Don't miss this important event for advancing height system unification.

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STSE-GOCE Height System Unification Final Meeting, 19-20 Feb 2013, ESTEC, The Netherlands

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  1. STSE-GOCE+ Height System Unification Final Meeting, 19-20 FEB 2013, ESTEC Noordwijk, The Netherlands Daniel Roman (NGS/GRAV-D P.I.) Consultant Xiaopeng Li (DST) & Simon Holmes (SGT)

  2. Usage of GOCE data • Gravimetric Geoid and GRAV-D • Long Wavelengths of gravity field • Enhances satellite only solution • Better overlap with aerogravity • Normalizes aerogravity • Combined air/satellite data assess surface data • Model of systematic errors in NAVD 88 • Previously 600 km resolution (GRACE only) • This should better reduce residuals in hybrid geoid

  3. GRAV-D Collection (20140211) EN06 Map Key - Airborne Gravity Data Green: Available data and metadataBlue: Data being processedOrange: Data collection underwayWhite: Planned for data collection

  4. Uncorrected/Level 1 GRAV-D

  5. Biases w.r.t. EGM2008/GOCE

  6. Biases Removed • Still at collection altitude (6.7 km) • Downward Cont. problems (ringing) • Merging with satellite models

  7. More Tapering tests of the data are probably needed to reduce the rings

  8. DC w/ broader filter & trim

  9. Compare with surface data

  10. GGM02S (GRACE)/GPS vs. NAVD 88Residual = hGPS – NGGM02S – HNAVD 88 Residual = hGNSS – NGOCE – HNAVD 88- eH

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