1. Introduction Accurate centre-of-mass corrections for geodetic spherical satellites are expected to contribute to accurate determination of the scale of the earth, i.e., the scale of terrestrial reference frame and

To realize the full potential of satellite laser ranging for accurate geodesy, it is crucial that all systematic effects in the measurements are taken into account. This paper derives new values for the so-called center-of-mass corrections for three geodetic satellites that are regularly tracked and used in geodetic studies. Optical responses of the twin satellites, Starlette and Stella, and th...

The new theory of Self Creation Cosmology has been shown to yield a concordant cosmological solution that does not require inflation, exotic nonbaryonic Dark matter or Dark Energy to fit observational constraints. In vacuo there is a conformal equivalence between this theory and canonical General Relativity and as a consequence an experimental degeneracy exists as the two theories predict ident...

1 Hungarian Academy of Sciences, Research Group for Physical Geodesy and Geodynamics, Budapest, Hungary 2 FÖMI Satellite Geodetic Observatory, Budapest, Hungary 3 Max-Planck-Institute für Radioastronomie, Bonn, Germany 4 Urumqi Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Urumqi 830011, PR China 5 National Astronomical Observatories, Chinese Academy of Sciences...

The Satellite Laser Ranging (SLR) data allows for the spin parameters determination of the fully passive, geodetic satellites. We have spectrally analyzed the long time series of the Full Rate SLR data delivered by the global network of the SLR stations and obtained information on the spin parameters, and the spin evolution, of the following satellites: Ajisai, LAGEOS-1, LAGEOS-2, LARES, Larets...

This contribution reassesses progress in the development of satellite laser ranging (SLR) technology and its scientific and societal applications in South Africa. We first highlight the current global SLR tracking stations within the framework of the International Laser Ranging Service (ILRS) and the artificial satellites currently being tracked by these stations. In particular, the present wor...

In 2004, at the Gravity, Geoid and Space Missions (ggsm04) conference in Porto, Portugal, a joint meeting of the International Association of Geodesy (IAG) Working Groups on Inverse Problems and Global Optimization and Satellite Gravity Theory took place. It was then recognized that gravity modelling from satellite, airborne and terrestrial data, and today’s application of gravity models in rel...

Strong seasonal variations of horizontal and vertical positions are observed on GPS times series from stations located in Nepal, India and Tibet (China). We demonstrate that this geodetic deformation is induced by seasonal variations of continental water storage driven by the Monsoon. For this purpose, we use satellite data from the Gravity Recovery and Climate Experiment (GRACE) to determine t...

This paper presents a method to derive local sea level variations using data from a single geodetic-quality Global Navigation Satellite System (GNSS) receiver using GPS (Global Positioning System) signals. This method is based on multipath theory for specular reflections and the use of Signal-to-Noise Ratio (SNR) data. The technique could be valuable for altimeter calibration and validation. Da...