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Traverse and Network Processing

Topics in this section explain the details of the survey computations, observation types and adjustment methods associated with traverses and networks. Subjects include observation and format conventions used, editing and combination of observation data, traverse types, adjustment methods, least-squares and the application and results of statistical analysis.

Topics in this section:

General Principles for Traverse Processing Traverse Types Select Data Set Observation Conventions and Types for Traverse and Network Traverse/Network Summary Adjustment Options Traverse Adjustment - Bowditch method Vertical Adjustment Network Adjustment - Least Squares Provisional coordinates Levelling networks Weights Standard deviations Constraints Network Rank and Datum Defects Assessing results of adjustment Minimally-constrained network Convergence of Adjustment Accepting or rejecting results of adjustment Least Squares - Statistical Options and Analysis Statistical Options Provisional point tolerance Relax SD on Entry Errors Centerings and A-Priori Standard Deviations Convergence criteria Outlier tests and data snooping Confidence Region Scalars Global chi-squared unit variance test Scaling of Error Ellipses Redundancy Numbers and Marginally Detectable Errors (MDE) SP1 class testing 3D Adjustments 3D Adjustments - Introduction Network Pre-Analysis Three situations for 3D adjustments Localisation of point coordinates or GPS vector observations Localisation Localisation (Site Calibration) To localise or not? Availability of the Localisation Function Derivation of Transformation Parameters for Localisation Extract file Extract file types Creation of a Standard Extract File Naming convention 'Continue processing' prompt Meaning, sorting and correction of control, traverse and network observations Combining data from different sources Editing an Extract file Sample Extract file