A5027373059- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Inertial Sensor and Navigation
- Advanced Frequency and Time Standards
- Space Satellite Systems and Control
- Astronomical Observations and Instrumentation
- Spacecraft Design and Technology
- Geophysics and Sensor Technology
- Astro and Planetary Science
- Indoor and Outdoor Localization Technologies
- Geomagnetism and Paleomagnetism Studies
- Geological Modeling and Analysis
- Target Tracking and Data Fusion in Sensor Networks
- Spacecraft Dynamics and Control
- Planetary Science and Exploration
- Historical Geography and Cartography
- Earthquake Detection and Analysis
- Space exploration and regulation
- Scientific Measurement and Uncertainty Evaluation
- Advanced Computational Techniques and Applications
- Satellite Communication Systems
- 3D Modeling in Geospatial Applications
- Atomic and Subatomic Physics Research
- Space Exploration and Technology
Technical University of Munich
2016-2025
Czech Academy of Sciences, Institute of Animal Physiology and Genetics
2022
Czech Technical University in Prague
2013
Netherlands Institute for Radio Astronomy
2013
Japan External Trade Organization
2010
Federal Agency for Cartography and Geodesy
2009
University of Bern
1997-2008
GFZ Helmholtz Centre for Geosciences
2005
Astronomical Institute of the Slovak Academy of Sciences
1991-2004
École Polytechnique Fédérale de Lausanne
2002
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...
[1] We present a method to derive velocity uncertainties from GPS position time series that are affected by time-correlated noise. This is based on the Allan variance, which widely used in estimation of oscillator stability and requires neither spectral analysis nor maximum likelihood (MLE). The variance rate (AVR) calculated domain hence not too sensitive gaps series. We derived analytical expressions AVR for different kinds noises like power law noise, white flicker random walk found an...
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...
Abstract Different from differential code biases, the observable-specific biases (OSBs) directly describe of individual pseudorange measurements, which provide full flexibilities for multi-GNSS handling. We present method parameterization, computation and alignment OSBs as part local ionospheric modeling. As a representative example, GPS L1/L2/L5 GLONASS L1/L2 were estimated during 2017–2018 independent International GNSS Service (IGS) its experimental (MGEX) network stations. The stability...
China's BeiDou satellite navigation system (BDS) has completed its full constellation in orbit since June 2020. Services have been evolved from regional (BDS-2) to global (BDS-3). This contribution evaluates the impact of solar radiation pressure (SRP) modeling on orbits and geodetic parameters. To that end, we process 2 years BDS observations (2019-2021), collected by a network 100 ground stations. A physical priori box-wing model based estimated optical properties is introduced. Various...
Absolute rotation rate sensing with extreme sensitivity requires a combination of several large scale gyroscopes in order to obtain the full vector rotation. We report on construction and operation four-component, tetrahedral laser gyroscope array as five story building situated near surface, underground laboratory. It is demonstrated that reconstruction Earth can be achieved sub-arcsecond resolution over more than six weeks.Received 3 February 2020Accepted 18 June...