Geodetic VLBI correlation in software |
| |
Authors: | Steven John Tingay W Alef D Graham A T Deller |
| |
Institution: | 1.Curtin Institute of Radio Astronomy, Curtin University of Technology,Perth,Australia;2.Max Planck Institut fuer Radioastronomie,Bonn,Germany;3.Swinburne University of Technology, Centre for Astrophysics and Supercomputing,Hawthorn,Australia |
| |
Abstract: | Correlation algorithms for geodetic very long baseline interferometry (VLBI) can now be effectively implemented on parallel
computers of modest size. We have undertaken a detailed comparison of the output from a trusted geodetic correlator, one that
has supported global geodetic VLBI observations for many years, with the output of a software correlator implemented on a
small parallel computing cluster. We show that the correlator outputs agree closely, within expected error bounds, after accounting
for the differences in the adopted geometric delay models, and therefore that use of the software correlator is feasible for
geodetic VLBI processing, as a first step toward routine geodetic data processing. Recent developments in software correlation
for geodesy are discussed, including the possibility of real-time processing options. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|