1st Joint Commission 2 and IGFS Meeting
International Symposium on
Gravity, Geoid and Height Systems 2016

September 19-23, 2016
Thessaloniki, Greece

Scoping requirements for the measurement of non-conservative forces for next generation gravity field missions

19/09/2016 | 14:30 | Session 1: New missions and concept performance

Author(s):

David Wiese, Srinivas Bettadpur and Michael Watkins

Abstract

Studies have shown that next generation gravity field mission architectures taking advantage of laser interferometric ranging and GOCE-type drag-free compensation will be limited by temporal aliasing errors (i.e undersampling and mismodeling of high frequency geophysical signals). In this study, we seek to define performance requirements for the measurement and removal of non-conservative forces such that the high precision laser interferometry measurements can be fully exploited in light of temporal aliasing errors and their uncertainty. The performance requirements are derived via a matrix of high fidelity numerical simulations of the satellite system at various altitudes and separation distances for single and dual-pair mission architectures.

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