Sea Surface Heights in the Lampedusa Test Field for Calibration of the Topex-Poseidon Altimeter

  • Johannes Ihde
  • Jürgen Eck
  • Uwe Schirmer
  • Andreas Reinhold
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 112)

Abstract

About 7000 GEOSAT altimeter measurements in an area of 35° < lat. < 36°, 12° < long. < 13° from April 1985 to September 1986 are the basis for the derivation of the sea surface heights. 31 ascending and 27 descending orbits yield 379 crossing points. Several different crossing point adjustments are carried out. The RMS of the residuals in the cross points is smaller than ± 5cm. The remaining influences of measuring errors are eliminated through a two-dimensional low-pass filtering. The result is a digital sea surface model with a gridding space of 0.01°. The sea surface level follows from GPS-campaigns and gauge measurements on the islands Lampedusa and Lampione. The tilt is controlled through astrogeodetic deflections of the vertical.

Keywords

Cala Gridding 

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Johannes Ihde
    • 1
  • Jürgen Eck
    • 1
  • Uwe Schirmer
    • 1
  • Andreas Reinhold
    • 1
  1. 1.Institut für Angewandte Geodäsie Aussenstelle LeipzigLeipzigGermany

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