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Simulated satellite formation flights for detecting the temporal variations of the Earth's gravity field
(2010)
In this thesis, the concept of satellite formation flight (SFF) is studied by means of simulated satellite observations. With various formation types enabling inter-satellite measurements in various directions
(e.g. ...
Möglichkeiten der Nutzung kinematischer Satellitenbahnen zur Bestimmung des Gravitationsfeldes der Erde
(2011)
Die Extraktion von Schwerefeldinformation aus den Bahnverfolgungsdaten von Satelliten gehört zu den
frühesten wissenschaftlichen Anwendungen der Weltraumtechnik. Die Ausrüstung von Satelliten mit GPSEmpfängern
hat hier ...
Zur Entwicklung und Bewertung der absoluten GNSS-Antennenkalibrierung im HF-Labor
(2011)
Bei der relativen Positionsbestimmung mit GNSS-Verfahren stellen die Antenneneinflüsse, die sich durch eine richtungsabhängige Empfangscharakteristik auszeichnen, einen der die Genauigkeit begrenzenden Faktoren dar. Durch ...
Entwicklung eines Kalman-Filters zur Bestimmung kurzzeitiger Variationen des Erdschwerefeldes aus Daten der Satellitenmission GRACE
(2011)
Eine wichtige Beobachtungsgröße bei der Erforschung des Erdsystems stellt das Gravitationsfeld der Erde dar, dessen zeitliche Variationen mit der Satellitenmission GRACE (Gravity Recovery And Climate Experiment) erstmals ......
Development of a Kalman filter to derive short-term variations of the Earth's gravity field from GRACE data
The gravitational field and its temporal variations represent an important observable ......
Development of a Kalman filter to derive short-term variations of the Earth's gravity field from GRACE data
The gravitational field and its temporal variations represent an important observable ......
Effects on the Geodetic-VLBI Observables Due to Polarization Leakage in the Receivers
(2011)
Geodetic VLBI delivers baseline length and Earth orientation parameter measurements, which offer the most viable and precise way to study Earth crustal and core dynamics and to support space navigation. The precision of ...
Separablity of deformations and measurements noises of GPS time series with modified Kalman filter for landslide monitoring in real-time
(2012)
The separation of the deformations and measurement noise of GPS coordinate time series and accuracy improvement of GPS real-time coordinates are major aspects of the thesis. In order to reduce the influence of the colored ...
Robust determination of station positions and Earth orientation parameters by VLBI intra-technique combination
(2011)
In this thesis, it is shown that combining contributions of different VLBI analysis centers, a so called intratechnique combination, improves the robustness and stability of the final VLBI results. For this purpose, a ...
Konsistente Kombination von Schwerefeld, Altimetrie und hydrographischen Daten zur Modellierung der dynamischen Ozeantopographie
(2012)
Die dynamische Ozeantopograpie als Differenz zwischen Meeresoberfläche und dem Geoid reflektiert charakteristische Merkmale der Ozeanzirkulation und stellt als gemessene Größe somit eine bedeutende Eingangsgröße in ...
Digital filtering algorithms for decorrelation within large least squares problems
(2012)
The GOCE (Gravity Field and steady-state Ocean Circulation Explorer) mission is dedicated to the determination of the Earth's gravity field. During the mission period of at least one year the GOCE satellite will collect ...
On high performance computing in geodesy: applications in global gravity field determination
(2015)
Autonomously working sensor platforms deliver an increasing amount of precise data sets, which are often usable in geodetic applications. Due to the volume and quality, models determined from the data can be parameterized ...