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Generating Orthometric Heights from the ERS-1 Altimeter Geodetic Mission Dataset: Results from an Expert Systems Approach

  • P. A. M. Berry
  • R. F. Sanders
  • C. Leenmans
  • E. Bron
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 119)

Abstract

The ERS-1 mission resulted in the acquisition of large volumes of echoes over non-ocean surfaces. The dense data coverage generated from the geodetic mission offers the possibility of generating millions of height points over the earth’s land surface. However, highly complex altimeter echoes are observed over much of the terrain not sampled by previous altimeters due to loss of lock. An expert system has therefore been developed to retrack individual waveforms using a range of retrackers specifically configured to interpret echoes over land. Data from the entire geodetic mission has been processed to generate a Regional Altimeter Result database (RAR) and this paper presents results illustrating the potential of this technique to generate terrain related information over remote areas. The results confirm the value of an expert system approach to land altimetry retracking, and demonstrate that additional terrain related information may also be derived.

Keywords

Expert System Orthometric Height Waveform Shape Global Digital Elevation Model Height Point 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Berry, P.A.M., Bracke, H. & Jasper, A., 1997. ‘Retracking ERS-1 Altimeter Waveforms over Land for Topographic Height Determination: an Expert Systems Approach’. Proceedings, Third ERS Symposium, Florence, March 1997.Google Scholar
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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • P. A. M. Berry
    • 1
  • R. F. Sanders
    • 1
  • C. Leenmans
    • 1
  • E. Bron
    • 1
  1. 1.Geomatics Unit, Faculty of Computing Sciences & EngineeringDe Montfort UniversityLeicesterUK

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