A POINT CLOUD AIDED CALIBRATION OF A COMBINED GEODETIC SURVEY INSTRUMENT

The invention relates to survey instrument (4) comprising a single point and a point cloud measuring functionality, a communication interface (81,82), and a computing unit (30). The point cloud measuring functionality configured to emit a scanning beam (21) along a first measuring axis and to advance the first measuring axis along a scanning pattern. The point cloud measuring functionality is configured to generate point cloud data representing a setting (2). The single point measuring functionality is configured to emit a measuring beam (11) along a second measuring axis. The first measuring axis is referenced to the second measuring axis. The communication interface (81,82) is configured to receive model data representing at least a part of the setting (2) and comprising referencing data to an external coordinate system. The computing unit (30) is configured to identify cardinal features in the point cloud data as well as in the model data. The survey instrument (4) is configured to execute a stationing functionality by merging the acquired point cloud data with the model data by matching the identified cardinal features in the point cloud data with respective cardinal features in the model data.