The Mathematica Journal
Volume 9, Issue 2

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Updating a Geographic Database
Leendert van Gastel
Harry Uitermark

The Covariance Matrix

For two sets of points and , the covariance matrix is made from blocks:

where and denote a basis and

and

with

In equation (1), the term is the matrix for a single free point and the set of control points . The term is the matrix for both sets of control points .



     
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