March 2015
Beginner to intermediate
840 pages
25h 12m
English
The positional error
of a station is directly related to the standard ellipse, as seen in Figure 2.7.5. The positional error is the standard deviation of a station in a certain direction, say
. It is identical with the standard deviation of the distance to a known (fixed) station along the same direction
, as computed from the linearized distance equation and variance-covariance propagation. The linear function is
Because of equations (2.7.70) and (2.7.71), the distribution of the random variable
is multivariate normal with

The variance of the random variable
follows from the law of variance-covariance propagation:
The variance ...
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