re- 
am, 
1e 
6. 
CONCLUSION 
      
Because the current analytical plotters are equipped with limited computer 
capacity, there is not yet a use for rigorous recursive block adjustment 
methods in practice. The software developed at Helsinki University of Tech- 
nology is made to meet practical needs. It is naturally more complicated for 
the operator than the old systems, where he just observed the total block 
without having to think of anything else. On the other hand it brings new 
attitudes to the operator's work making it more challenging and interesting. 
There are three subjects which have especially been under consideration when 
implementing the system. The main criterion has been operationality. lt has 
been realized with menu techniques, help functions, and trying to install 
into the system specific operational features. Secondly, to control the 
quality of the measurements Baarda's reliability numbers are computed and 
gross errors are detected by computing the proper test criteria. The third 
aspect especially considered is automation. 
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/i/. 8aarda, W.: 
/2/.. Baarda, W.: 
137 Grün; Ans 
/M Inkii8, HU: 
/5/.Kratky,- Vi: 
/6/ ‘Sarjakoski, T.: 
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A Testing Procedure for Use in Geodetic Networks. 
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An Optimum Algorithm for On-Line Triangulation. 
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Vol. 25 -'i11/2, Helsinkis.1982,: pp..131. ^. 151. 
Recursive Least Squares Estimation by Updating the 
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of the ISP, Commission ill, Rio de Janeiro, 1985, 10 p. 
On-Line Aerial Triangulation on the ANAPLOT. Proceedings 
of the ASP Analytical Plotter Symposium, Reston, April, 
1980, .pp. 207.- 22h. 
On Sparse Matrix Techniques for Computation of Weight 
Coefficient Matrices. Presented Paper, XV th Congress 
of the ISP, Commission ll}, Rio de Janeiro, 19845,