Abstract Since Kepler, Newton and Huygens in the seventeenth century, geodesy has been
concerned with determining the figure, orientation and gravitational field of the Earth. With …

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 …

The main objective of the US-German twin-satellite mission GRACE (Gravity Recovery and
Climate Experiment), launched in March 2002, is a precise survey of the Earth's time …

Abstract The Drag-Free and Attitude Control System (DFACS) is a critical platform for various
space missions, including high precision satellite navigation, geoscience and gravity field …

The proposed calibration method uses the precise kinematic positions derived from the data
of the GPS receivers aboard the twin GRACE satellites (POD, Precise Orbit Determination) …

We present a fully active-controlled He–Ne ring laser gyroscope operating in square cavity
having a side length of 1.35 m. The apparatus is designed to provide a very low mechanical …

Long-term water level data with 15-minute temporal resolution from 18 tide gauge stations
were used to analyze tidal and non-tidal oscillations in four different seas along the Turkish …

Non-gravitational force models are critical not only for the applications of satellite orbit
determination and prediction, but also for the studies of gravitational reference sensors in …

The gravity field of the Earth is time-dependent due to several types of mass variations which
take place on different time scales. Usually, the time-variability of the gravitational potential …

The paper presents the principle of operation, the main components and the results of the
work of the software created in the Sternberg Astronomical Institute of Moscow State …