It is used to solved for the coordinates of a large network consisting of several sub-blocks. With given normal equation from each individual block, the solution of the entire network can be achieved by block by block without solving the normal equation of the entire network. It is computation economical.
See description in Geodesy: the Concepts by Petr Vanicek and Edward Krakiwsky (1986).
The formula and f77 codes can be found in here.
See description in Geodesy: the Concepts by Petr Vanicek and Edward Krakiwsky (1986).
The formula and f77 codes can be found in here.
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