Bulletin géodésique

, Volume 54, Issue 2, pp 235–245 | Cite as

Roundoff accumulation at weak horizontal positions

  • Dennis G. Milbert


This paper examines computer roundoff error accumulation in the least-squares adjustment of horizontal geodetic networks containing positions of very poor geometry. Roundoff error accumulates at the weak unknowns but does not disturb the solution of well-determined positions. Numerical results are given.


Normal Matrix Roundoff Error National Geodetic Survey Normal Equation System Horizontal Network 
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  3. Peter MEISSL, 1979: A priori estimation of roundoff errors during the direct solution of a super-large geodetic normal equation system.NOAA Professional Paper, National Oceanic and Atmospheric Administration, U.S. Department of Commerce, Rockville, Md. 20852 (In press).Google Scholar
  4. Charles SCHWARZ, 1974–1975: Adjustment computations (lecture notes), Department of Geography and Regional Science, George Washington University, Washington, D.C.Google Scholar

Copyright information

© Bureau Central de L’Association Internationale de Géodésie 1980

Authors and Affiliations

  • Dennis G. Milbert
    • 1
  1. 1.National Geodetic Survey National Ocean SurveyNOAARockville

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