1 / 17

Performance Processing Scheme from Level 0 to Level 3

Performance Processing Scheme from Level 0 to Level 3. Mature Processing Methods and Algorithms. Performance Simulation Input. Performance End-to-End Simulation Scheme. Performance Four Error Classes. instrument errors satellite errors instrument/satellite coupling errors

jacqueline-clay
Télécharger la présentation

Performance Processing Scheme from Level 0 to Level 3

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Performance Processing Scheme from Level 0 to Level 3 Mature Processing Methods and Algorithms

  2. Performance Simulation Input

  3. Performance End-to-End Simulation Scheme

  4. Performance Four Error Classes instrument errors satellite errors instrument/satellite coupling errors post processing errors

  5. Performance The 4 Error Classes: Simulated Results Instrument Error Coupling Error Satellite Error Post-Flight Error this total error is used in the geoid and gravity field retrievals Total Error

  6. Performance Spherical Harmonic Error Spectrum

  7. Performance Spectral Error Results 1 cm geoid and 1 mgal gravity field accuracies are well recovered at wavelength of 100 km (degree and order 200)

  8. Performance Spatial Error Results 1 cm geoid and 1 mgal gravity field accuracies are well recovered at wavelength of 100 km (degree and order 200) for all latitudes except near the poles.

  9. Performance Science Requirements: Summary

  10. Performance Simulation Results 1 10 the simulated results suggest excellent performance versus scientific requirements

  11. Performance Solid Earth Physics

  12. Performance Oceanography

  13. Performance Geodesy

  14. Conclusions Uniqueness and Complementarity • GOCE will be the first gravity gradiometer in space • an ambient temperature, capacitive gradiometer instrument is selected in combination with GPS high-low tracking • GOCE will map the Earth’s gravity field in three dimensions providing a: • - geoid error < 1 cm at 100 km spatial resolution • - gravity field error << 1 mgal at 100 km spatial resolution • The GOCE data will complement data from altimetric missions, Oersted, CHAMP, GRACE, ICESAT and Cryosat

  15. Conclusions Advancement of European E.O. capabilities • the gradiometer accelerometers and GPS receiver are based on European technology • the drag free system technology offers new opportunities in a wide range of applications including E.O. from low orbit altitude • a multi-disciplinary user community within fields of Solid Earth Physics, Geodesy and Oceanography is well prepared to utilize the new and accurate gravity field and geoid data at high spatial resolution

  16. Conclusions Feasibility and Level of Maturity • all technologies have been demonstrated (except micro-thrusters) • and the development schedule is acceptable • an end-to-end and closed loop simulator provides realistic • and comprehensive insight into system performance from • the sensor level to the retrievals of the gravity field and • geoid signals • the processing schemes (from Level 0 to Level 3) and • algorithm maturity are meeting the requirements • impact studies show very promising results for applications • in the disciplines of solid Earth physics, absolute ocean • circulation and geodesy

  17. Conclusions Timeliness and Programmatics • the GOCE Mission is very timely in the context of the user • needs and their associated readiness • no implementation constraints exist • the proposed launch in 2004 is in the low activity region of • the solar cycle) • the expected launch in late 2006 still OK.

More Related