Instrument Uncertainty Information

From the Solution Interface you can right-click on any individual instrument or “context” to access its properties and covariance information.

This dialog provides access to the active degrees of Freedom for the instrument. These are the degrees of freedom controlled by the network solution.

The Scaling Transform and Uncertainty Covariance Matrix reflect the position of the instrument and its base uncertainty.

This dialog also offers a means to directly access the points measured by the instrument and included in the solution. Right-click on a point to access its covariance matrix. This will match the covariance of the input point also available through the composite point properties.

 

Instrument Solution Reference Frame.

Like USMN there are two options to consider when restricting degrees of freedom: