Journal of Geodesy

, 83:1061

Geodetic VLBI correlation in software

  • Steven John Tingay
  • W. Alef
  • D. Graham
  • A. T. Deller
Open Access
Original Article
  • 493 Downloads

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

Geodesy Very long baseline interferometry (VLBI) Software correlation 

Copyright information

© The Author(s) 2009

Authors and Affiliations

  • Steven John Tingay
    • 1
  • W. Alef
    • 2
  • D. Graham
    • 2
  • A. T. Deller
    • 3
  1. 1.Curtin Institute of Radio Astronomy, Curtin University of TechnologyPerthAustralia
  2. 2.Max Planck Institut fuer RadioastronomieBonnGermany
  3. 3.Swinburne University of Technology, Centre for Astrophysics and SupercomputingHawthornAustralia

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