HR: 1340h
AN: G43C-1477    [Abstracts]
TI: A Rigorous Combination of Space Geodetic Techniques: A Bayesian Approach
AU: * Barrett, P E
EM: barrett.paul@usno.navy.mil
AF: US Naval Observatory, 3450 Massachusetts Ave, NW, Washington, DC 20392-5420, United States
AU: Luzum, B
EM: luzum.brian@usno.navy.mil
AF: US Naval Observatory, 3450 Massachusetts Ave, NW, Washington, DC 20392-5420, United States
AB: The IERS has encouraged the development of rigorous combination techniques of the ITRF, EOPs, and ICRF in recent years. These techniques use space geodetic data at the observation level, e.g. fundamental site coordinates and velocities, and quasar coordinates and motion. The standard approach to combining such data is the use of normal equations with minimal constraints and the rejection of outlier data, usually using an iterative solution. We propose an alternative technique using Bayesian inference to estimate EOPs. This poster gives an outline of the technique being developed and discusses the benefits of Bayesion inference in the handling of constraints and outlier data using the prior probability distribution function. The poster concludes with some preliminary results of EOPs using GPS and VLBI data.
DE: 1229 Reference systems
DE: 1239 Earth rotation variations
SC: Geodesy [G]
MN: 2007 Fall Meeting