Methods of satellite geodesy are increasingly used in geodesy, surveying engineering, and related disciplines. In particular, the modern development of precise and operational satellite based positioning and navigation techniques have entered all ?elds of geosciences and engineering. A growing demand is also evident for ?ne-structured gravity ?eld models from new and forthcoming satellite missions and for the monitoring of Earth’s rotation in space. For many years I have had the feeling that there is a de?nite need for a systematic textbook covering the whole subject, including both its foundations and its applications. It is my intention that this book should, at least in part, help to ful?ll this requirement. This book is intended to serve as a text for advanced undergraduates and for graduates, mainly in geodesy, surveying engineering, photogrammetry, cartography and geomatics. It is also intended as a source of information for professionals who have an interest in the methods and results of satellite geodesy and who need to acquaint themselves with new developments. In addition, this book is aimed at students, teachers, professionals and scientists from related ?elds of engineering and geosciences, such as terrestrial and space navigation, hydrography, civil engineering, traf?c control, GIS technology, geography, geology, geophysics and oceanography. In line with this objective, the character of the book falls somewhere between that of a textbook and that of a handbook. The background required is an undergraduate level of mathematics and elementary mathematical statistics.