Impact of Orbit Design Choices on the Gravity Field Retrieval of Next Generation Gravity Missions: Insights on the ESA-ADDCON Project

I Daras, Pieter Visser, N. Sneeuw, T van Dam, R. Pail, T Gruber, S. Tabibi, Q Chen, W Liu, M. Tourian, J. Engels, P. Saemian, C Siemes, R Haagmans

Research output: Contribution to conferenceAbstractScientific

Abstract

N ext Generation Gravity Missions (NGGMs) expected to be launched in the mid-term future have set high anticipations for an enhanced monitoring of mass transport in the Earth system, establishing their products applicable to new scientific fields and serving societal needs. The European Space Agency (ESA) has issued several studies on concepts of NGGMs. Following this tradition, the project “Additional Constellations & Scientific Analysis Studies of the Next Generation Gravity Mission” picks up where the previous study ESA-SC4MGV left off. One of the ESA-ADDCON project objectives is to investigate the impact of different orbit configurations and parameters on the gravity field retrieval. Given a two-pair Bender-type constellation, consisting of a polar and an inclined pair, choices for orbit design such as the altitude profile during mission lifetime, the length of retrieval period, the value of sub-cycles and the choice of a prograde over a retrograde orbit are investigated. Moreover, the problem of aliasing due to ocean tide model inaccuracies, as well as methods for mitigating their effect on gravity field solutions are investigated in the context of NGGMs. The performed simulations make use of the gravity field processing approach where low-resolution gravity field solutions are co-parameterized in short-term periods (e.g. daily) together with the long-term solutions (e.g. 11-day solution). This method proved to be beneficial for NGGMs (ESA-SC4MGV project) since the enhanced spatio-temporal sampling enables a selfde- aliasing of high-frequency atmospheric and oceanic signals, which may now be a part of the retrieved signal. The
Original languageEnglish
Pages33-33
Number of pages1
Publication statusPublished - 2017
Event4th Swarm Science Meeting & Geodetic Missions Workshop - Banff, Canada
Duration: 20 Mar 201724 Mar 2017
Conference number: 4
http://www.swarm2017.org/

Conference

Conference4th Swarm Science Meeting & Geodetic Missions Workshop
CountryCanada
CityBanff
Period20/03/1724/03/17
Internet address

Fingerprint

Dive into the research topics of 'Impact of Orbit Design Choices on the Gravity Field Retrieval of Next Generation Gravity Missions: Insights on the ESA-ADDCON Project'. Together they form a unique fingerprint.

Cite this