Stochastically estimation geodynamic parameters from lageos slr data

摘要

A key drawback to estimating geodetic and geodynamic parameters over time based on satellite laser ranging (SLR) obervations is the inability to accurately model all the forces acting on the satellite. Errors associated with the observations and the measurement model can detract from the estimates as well. These "model errors" corrupt the solutions obtained from the satellite orbit determination process. Dynamical models for satellite motion utilize known geophysical parameters to mathematically detail the forces acting on the satellite. However, these parameters, while estimated as constants, vary over time. These temporal variations must be accounted for in some fashion to maintain meaningful solutions.