Triple-Pair Constellation Configurations for Temporal Gravity Field Retrieval

摘要: The goal of next-generation gravity missions (NGGM) is to improve the monitoring mass transport in Earth system by an increased space-time sampling capability as well higher accuracies a new generation instrumentation, but also continue time series obtained past and current such GRACE Follow-On. As likelihood three satellite pairs being simultaneously orbit mid-term future increased, we have performed closed-loop simulation investigate impact third pair either polar or inclined addition Bender-type constellation with NGGM instrumentation. For additional pair, GRACE-like instrumentation was tested. analysis showed that mainly increases redundancy does not significantly de-aliasing capabilities. best-performing triple-pair scenario comprises sensors. Starting results indicate average improvement 11% case adding near-polar orbit, 21% for placed orbit. most important advantage multi-pair constellation, however, possibility recover daily fields spatial resolution. In investigated scenarios, meaningful resolution maximum spherical harmonic degree 26 can be achieved, while parametrization up 40 aliasing thus would need constraints prior information.