Disable Dependent Baselines Before Network Adjustment

Network adjustment results should be based on a set of independent vectors. The number of independent baselines is equal to n-1, where n is the number of receivers recording data simultaneously. Since the number of possible baselines is (n(n-1))/2, a surveyor must identify the dependant baselines and use one of the procedures below to disable them.

Disable dependent baselines before processing

  1. Download and import all receiver data.
  2. Open the time-based view and click on a single session. Then [Ctrl]-click to select all the baselines using that session.
  3. Open a plan view to view the highlighted baselines of session you are focusing on. You can identify the baselines to use in network adjustment.

    Tip: Use the View Filter Manager to create two user-defined filters, one to display enabled baselines only and another to display disabled baselines only.

  4. Use the context menu to disable dependent baselines.
  5. Run Process Baselines using the independent baselines (enabled).

Disable dependent vectors after processing

  1. Download and import all receiver data and, after appropriate quality assurance, process baselines.
  2. You can use the time-based view to identify baselines created during a single session, or the vector spreadsheet and the plan view to view vectors associated with a single session.
  3. Identify the vectors with worst processing statistics (in the vector spreadsheet) and change the status of the least desirable vectors to disabled. In a session with 3 receivers only one vector would be dependent.
  4. All independent vectors marked as 'enabled' or 'enabled as check' are used in loop closure report. All 'enabled' vectors are tentatively used in the network adjustment.

Tip: You can either disable a dependent vector (created for each processed baseline) or you can disable the associated baseline. If you disable the baseline, the vector is deleted from the project.
Note: As it works now, baselines are selected from the time-based view. In the first workflow, the use can change baseline status in the time-based view. In the second workflow, the sessions can be viewed using the time-based view and the dependent vectors would be selected either from the plan view or the vector spreadsheet.