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Geodesy is the science of measuring and representing the earth's surface while taking its curvature into account. These surveys usually cover large areas and measurements are taken to high levels of accuracy. Results of such measurements are usually presented on a map or three-dimensional digital model. To do this effectively requires an accurate determination of the shape and size of a geometrical mathematical model of the earth and its magnetic field. Geodetic Surveying is concerned with the application of geodetic concepts in practical surveying contexts. The purpose of this course is to provide the student with an understanding of the principles involved in determining the size and shape of the earth, and from these data represent geodetic position on the earth's surface in various formats. The course also provides the student with the necessary knowledge and skills to plan, undertake, and critically review Global Navigation Satellite Systems (GNSS) survey networks in accordance with appropriate national standards, and combine these with conventional terrestrial observations. Map projections are examined to demonstrate the presentation of geodetic data in a useable format and to provide a framework for smaller-scale surveys.

The key subject areas covered in this course are: horizontal and vertical datums; map projections and coordinate systems; and GNSS surveys. These are presented largely in the Australian context though the fundamental principles are entirely transferable across the globe. This course assumes some prior knowledge of the fundamental principles involved in determining the size and shape of the earth, and basics of the Universal Transverse Mercator (UTM) map projection. In Geodetic Surveying B we expand on this prior knowledge and develop advanced-level application skills in solving complex geodetic problems, particularly with respect to calculations on the ellipsoid, calculations on the UTM map projection, and coordinate transformations.