Prediction of Polar Motion by Least-Squares Collocation

  • Roman Galas
  • Rudolf Sigl
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 105)


In this paper a procedure for predicting of pole positions using the least squares collocation approach is presented. Predicted pole coordinates are needed for a nearly “real-time” positioning. The main purpose of this work was to elaborate an efficient algorithm to evaluate x,y coordinates of the future pole positions, which would be as close as possible to the final published results. Since the accuracy of our prediction depends strongly on the modeling of polar motion, as was already pointed out by M.D.McCarthy (1988) and N.Sekiguchi (1988), special attention was paid to the problem of modelling and developing a procedure for determinating the parameters of the periodical and secular components.


Covariance Function Polar Motion Pole Position Empirical Covariance Coordinate Time Series 
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Copyright information

© Springer-Verlag New York Inc. 1990

Authors and Affiliations

  • Roman Galas
    • 1
  • Rudolf Sigl
    • 1
  1. 1.Institute for Astronomical and Physical GeodesyTechnical University of MunichMunichGermany

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