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Assessment of Satellite Constellations for Monitoring the Variations in Earth Gravity Field “SC4MGV”

The overall objective of this study is to assess constellations of two pairs of satellites for the retrieval of time-variable gravity field information for best quality scientific monitoring of mass distribution and transport in the Earth system. Before embarking on this study the geodetic community and space agencies have come to realize that weaknesses in current single-pair gravimetric satellite missions such as GRACE or GRACE-FO (to be launched in 2017) would significantly be alleviated by having a second GRACE-type pair in space simultaneously.

Germany

12.708

UNIV STUTTGART
End-Of-Life Disposal Concepts for Lagrange-Point and Highly Elliptical Orbit Missions

Libration Point Orbits (LPO) and Highly Elliptical Orbits (HEO) are often selected for astrophysics and solar terrestrial missions as they offer vantage points for the observation of the Earth, the Sun and the Universe. No guidelines currently exist for LPO and HEO missions' end-of-life; however, as current and future missions are planned to be placed on these orbits, it is a critical aspect to define a sustainable strategy for their disposal, with the objective to avoid interference with protected regions.

UK

12-602

University of Southampton
End-of-Life Disposal Concepts for Lagrange-Points and HEO Missions

The awareness of the risk of uncontrolled accumulation of man-­‐made objects became significant in the late 70's and since then, a number of space debris mitigation guidelines have been published by various organizations. The general aim is to reduce the growth of space debris by ensuring that space systems are designed, operated, and disposed in a manner that prevents them from generating debris throughout their lifetime, assuring the sustainable space utilization.

Italy

12-602

Dinamica
OPS-Sat Phase A/B1

In conclusion this Phase A-B1 study contract has provided:
• Confirmation that the mission concept described in phase 0 is feasible and relevant
• Consolidation of mission objectives and mission requirements
• An updated mission architecture and system design solving many of the problem areas identified in Phase 0
• A roadmap for distribution of relevant documentation and tools to experimenters throughout the project

Denmark

2013-19

Gomspace APS

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