Bøger af Wolfgang Torge

The fifth edition of this textbook has been completely revised and significantly extended in order to reflect the revolution of geodetic technologies, methods and applications during the last decade. The Global Geodetic Observing System established by the IAG utilizes a variety of techniques to determine the geometric shape of the earth and its kinematics, the variations of earth rotation, and the earth's gravity field. The societal importance of geodetic products was highlighted by the UN resolution on the Global Geodetic Reference Frame. In this context, both space and terrestrial techniques play a fundamental role. Recent space missions are monitoring climate-relevant processes such as mass transport in the Earth system and sea level changes. The analysis of the time variation of the geodetic products provides the link to neighboring geosciences and contributes to proper modelling of geodynamic processes. New satellite mission concepts and novel technologies such as quantum gravimetry and optical clocks show great potential to further improve the geodetic observing system in the future. The book especially addresses graduate students in the fields of geodesy, geophysics, surveying engineering, geomatics, and space navigation. It should also serve as a reference for geoscientists and engineers facing geodetic problems in their professional work. The book follows the principal directions of geodesy, providing the theoretical background as well as the principles of measurement and evaluation methods, which is enriched with numerous figures. An extensive reference list supports further studies.

Mit einer uber zweitausendjahrigen Geschichte gehort die Geodasie neben der Astronomie und der Geographie zu den altesten Wissenschaften, die sich mit der Thematik Erde bzw. andere Himmelskorper befassen. In diesem Werk wird die Entwicklung der Geodasie vom Altertum uber das Mittelalter und die fruhe Neuzeit bis in die Mitte des 20. Jahrhundert vorgestellt, mit einer immer starker werdenden Konzentration auf Deutschland. Zahlreiche grotenteils farbige Abbildungen erganzen den Text. Behandelte Epochen: Altertum, Mittelalter, fruhe Neuzeit, napoleonische Zeit, Entstehung geodatischer Systeme bis zur Reichsgrundung, Preuens Einfluss auf die Landesvermessung, radikale Veranderung der Geodasie in der zweiten Halfte des 20. Jahrhunderts. Mit uber 200, teilweise farbigen Illustrationen.

Das Buch gibt einen systematischen Uberblick uber die grundlegenden Theorien, die Bezugssysteme und die Mess- und Auswertemethoden der Geodasie, wobei der Beitrag der geodatischen Raumtechniken zur Positionierung und zur Schwerefeldbestimmung besonders herausgestellt wird. Diese Methoden haben auch zu einem fur die Praxis wichtigen Wandel in der Einrichtung geodatischer Grundlagennetze gefuhrt. Zur interdisziplinaren Geodynamikforschung kann die Geodasie damit ebenfalls wesentliche Beitrage leisten. Der gegenwartige Stand der Geodasie wird durch eine Vielzahl von Beispielen aus Messung, Auswertung und Analyse illustriert, ein umfangreiches Literaturverzeichnis erleichtert ein weitergehendes Studium. Das Buch vermittelt einen umfassenden Uberblick uber die tiefgreifenden Veranderungen, welche die Geodasie in den vergangenen zwanzig Jahren erfahren hat.

The fourth edition of this textbook has been thoroughly revised in order to reflect the central role which geodesy has achieved in the past ten years. The Global Geodetic Observing System established by the IAG utilizes a variety of techniques to determine the geometric shape of the earth and its kinematics, the variations of earth rotation, and the earth's gravity field. Space techniques play a fundamental role, with recent space missions also including gravity field recovery. Terrestrial techniques are important for regional and local applications, and for validating the results of the space missions. Global and regional reference systems are now well established and widely used. They also serve as a basis for geo-information systems. The analysis of the time variation of the geodetic products provides the link to other geosciences and contributes to proper modelling of geodynamic processes. The book follows the principal directions of geodesy, providing the theoretical background as well as the principles of measurement and evaluation methods. Selected examples of instruments illustrate the geodetic work. An extensive reference list supports further studies. The book is intended to serve as an introductory textbook for graduate students as well as a reference for scientists and engineers in the fields of geodesy, geophysics, surveying engineering and geomatics.