STVTalk.com

December 14, 2005

PAPER ABOUT VLBI-GPS COMBINATION TO DETERMINE EARTH ORIENTATION PARAMETERS PUBLISHED

A paper detailing the pros and cons of combining VLBI and GPS observations to
determine Earth Orientation Parameters (EOP) co-authored by a member of the CORS
Team was recently published.

The full reference of the article is as follows:

Ray, J., J. Kouba, and Z. Altamimi, Is there utility in rigorous
combinations of VLBI and GPS EOPs?, J. of Geodesy, doi: 10.1007/
s00190-005-0007-7, 79(9), 505-511, 2005.

A copy of the PDF file can be reached at the following Web location:

http://www.ngs.noaa.gov/CORS/Articles/eopcomb-jog.pdf

Doesn't the data manipulation in the kalman filter that computes the
GPS orbits use the earth orientation parameters in its coordinate
transforms? Seems like you would want to keep the EOP data "pure" from
GPS.


Tom