Vol. 54 No. 01 (2004): Volume 54 Number 01, May 2004
Articles

Soft Modelling of Possible Blunders in Geodetic Networks

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  • Hansjörg Kutterer,
  • Orhan Akyılmaz
Hansjörg Kutterer
Deutsches Geodätisches Forschungsinstitut, Marstallplatz 8, D-80539 München, Germany
Orhan Akyılmaz
Institute of Geodesy, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey

Published 01/01/2004

Keywords

  • Outlier,
  • LSE,
  • redundancy,
  • fuzzy sets

How to Cite

Kutterer, Hansjörg, and Orhan Akyılmaz. 2004. “Soft Modelling of Possible Blunders in Geodetic Networks”. ITU ARI Bulletin of Istanbul Technical University 54 (01):26-33. https://ari.itu.edu.tr/index.php/ituari/article/view/6.

Copyright (c) 2004 ITU Press

Creative Commons License

This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.

Abstract

ions requires an assessment of the observed values regarding possible outliers or blundners. This is traditionally done using an iterative procedure. In each step, the observations are mutually considered as blundered. The respective error is modelled, estimated and tested for significance estimated error in the respective step is eliminated. The procedure sops when there is no significance. The widespread use of this strategy benefits from its theoretical background, its algorithmic efficiency and its adequacy in standard data processing. However, its main diadvantage is the neglection of multiple blunders in each step. In this study fuzzy logic is used to simultaneously model, estimate and statistically test all possible errors in the observations to overcome this problem. This strategy extending the traditional way is developed and discussed with respect to the classical case. The presentation concludes with numerical examples.
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