A5072456620- Geophysics and Gravity Measurements
- GNSS positioning and interference
- Ionosphere and magnetosphere dynamics
- Inertial Sensor and Navigation
- Geomagnetism and Paleomagnetism Studies
- Solar and Space Plasma Dynamics
- Space Satellite Systems and Control
- Planetary Science and Exploration
- Advanced Frequency and Time Standards
- Spacecraft Design and Technology
- Spacecraft and Cryogenic Technologies
- Astro and Planetary Science
- Reservoir Engineering and Simulation Methods
- Computational Physics and Python Applications
- Astronomical Observations and Instrumentation
- Methane Hydrates and Related Phenomena
- Soil Moisture and Remote Sensing
- Spacecraft Dynamics and Control
- Space exploration and regulation
- Geophysical and Geoelectrical Methods
- Radio Astronomy Observations and Technology
- Cryospheric studies and observations
- Indoor and Outdoor Localization Technologies
- Distributed and Parallel Computing Systems
- Historical Geography and Cartography
University of Bern
2015-2024
GFZ Helmholtz Centre for Geosciences
2024
Astronomical Institute of the Slovak Academy of Sciences
2015-2023
Federal Office of Topography swisstopo
2020
Japan External Trade Organization
2010
The satellite‐only gravity field model GOCO01S is a combination solution based on 61 days of GOCE gradient data, and 7 years GRACE GPS K‐band range rate resolved up to degree/order 224 harmonic series expansion. was performed consistently by addition full normal equations stochastic modeling observations. has been validated against external global models regional GPS/leveling While low medium degrees are mainly determined GRACE, significant contributions the new measurement type gradients...
Abstract. GOCO06s is the latest satellite-only global gravity field model computed by GOCO (Gravity Observation Combination) project. It based on over a billion observations acquired 15 years from 19 satellites with different complementary observation principles. This combination of measurement techniques key in providing consistently high accuracy and best possible spatial resolution Earth's field. The motivation for new release was availability reprocessed data Gravity Recovery Climate...
Abstract The generation and use of GNSS analysis products that allow—particularly for the needs single-receiver applications—precise point positioning with ambiguity resolution (PPP-AR) are becoming more popular. A general uncertainty concerns question on how necessary phase bias information should be provided to PPP-AR user. Until now, each AR-enabling clock/bias representation method had its own practice provide information. We have generalized observable-specific signal (OSB)...
GEROS-ISS stands for GNSS REflectometry, radio occultation, and scatterometry onboard the International Space Station (ISS). It is a scientific experiment, successfully proposed to European Agency in 2011. The experiment as name indicates will be conducted on ISS. main focus of dedicated use signals from currently available Global Navigation Satellite Systems (GNSS) L-band remote sensing Earth with study climate change. Prime mission objectives are determination altimetric sea surface height...
Satellite laser ranging (SLR) to the satellites of global navigation satellite systems (GNSS) provides substantial and valuable information about accuracy quality GNSS orbits allows for SLR-GNSS co-location in space. In framework NAVSTAR-SLR experiment two GPS Block-IIA were equipped with retroreflector arrays (LRAs), whereas all GLONASS system are LRAs an operational mode. We summarize outcome by processing 20 years SLR observations 12 using reprocessed microwave provided center orbit...
Abstract Improving and homogenizing time space reference systems on Earth and, more specifically, realizing the Terrestrial Reference Frame (TRF) with an accuracy of 1 mm a long-term stability 0.1 mm/year are relevant for many scientific societal endeavors. The knowledge TRF is fundamental navigation sciences. For instance, quantifying sea level change strongly depends accurate determination geocenter motion but also positions continental island stations, such as those located at tide...
Sentinel-1A is the first satellite of European Copernicus programme. Equipped with a Synthetic Aperture Radar (SAR) instrument was launched on April 3, 2014. Operational since October 2014 delivers valuable data for more than two years. The orbit accuracy requirements are given as 5 cm in 3D. In order to fulfill this stringent requirement precise determination (POD) based dual-frequency GPS observations delivered by an eight-channel receiver. POD (CPOD) Service charge providing orbital and...
The time variable Earth's gravity field contains information about the mass transport within system Earth, i.e., relationship between variations in atmosphere, oceans, land hydrology, and ice sheets. For many years, satellite laser ranging (SLR) observations to geodetic satellites have provided valuable of low-degree coefficients field. Today, Gravity Recovery Climate Experiment (GRACE) mission is major source for a high spatial resolution. We recover using SLR up nine satellites: LAGEOS-1,...