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Help > Working with Measurement Projects > Creating a New Project > New Project Wizard > Project Wizard: Geo-location Precision
Project Wizard: Geo-location Precision

        Precision Values: These values tell the processing algorithm how ‘correct’ the values from the GPS are. This helps the algorithm with better defining the geo-coordinate system, for performing better auto-calibration (if needed), and for improving accuracy of the project. These entered precision values are one-sigma values (that is the expected value falls within this range 62% of the time).

        The default values for Camera Station geo-coordinate precision are based on an assumption that the UAV taking the photos was a multi-rotor style UAV with standard GPS and barometric altitude sensor and storage. This generally means that the altitude / height of the UAV is relatively constant, and this leads to a small precision value default for Elevation or Z. As well, the standard GPS unit on the UAV (and not a high accuracy one) leads to the larger default values for precision in Plan or XY (or NE).

        See the Camera Station Geographic Precision section for reasonable values in different circumstances. The settings are also described on the Global Geo-coordinate Precisions Dialog.