Global Positioning System Reference
In-Depth Information
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[31
Lin
—
0.5
——
No
PgE
Figure 8.8
Variance factor versus length of baseline.
(Permission ASCE.)
an empirical rule and the residuals). All components of the vector are multiplied with
the same factor (the largest of three). Figures 8.8 to 8.10 show that the largest factors
are associated with the shortest baselines or lines with small
σ
k
(which tend to be
the shortest baselines). For short baselines the centering errors of the antenna and the
separation of the electronic and geometric center of the antenna are important; neither
is
reflected by the stochastic model used here. The variance-covariance submatrices
[31
Figure 8.9
Variance factor versus precision of baseline.
(Permission ASCE.)
