A5103035358- Geophysics and Gravity Measurements
- GNSS positioning and interference
- Geomagnetism and Paleomagnetism Studies
- Inertial Sensor and Navigation
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Spacecraft and Cryogenic Technologies
- Speech and Audio Processing
- Computational Physics and Python Applications
- Geophysical and Geoelectrical Methods
- Advanced Adaptive Filtering Techniques
- Statistical and numerical algorithms
- Geological Modeling and Analysis
- Spacecraft Dynamics and Control
- Seismic Imaging and Inversion Techniques
- Structural Health Monitoring Techniques
- Methane Hydrates and Related Phenomena
- Planetary Science and Exploration
- Flood Risk Assessment and Management
- Distributed and Parallel Computing Systems
- Topological Materials and Phenomena
- Advanced Frequency and Time Standards
- Cold Fusion and Nuclear Reactions
- Soil Geostatistics and Mapping
- Control Systems and Identification
Uppsala University
2024
GFZ Helmholtz Centre for Geosciences
2011-2019
Trimble (Germany)
2018-2019
Weatherford College
2015
University of Graz
2011
Czech Academy of Sciences, Astronomical Institute
2009
Institute of Navigation
2004
Abstract. Two daily gravity field solutions based on observations from the Gravity Recovery and Climate Experiment (GRACE) satellite mission are evaluated against river runoff data for major flood events in Ganges–Brahmaputra Delta (GBD) 2004 2007. The trends over periods of a few days GRACE reflect temporal variations during events. This is especially true larger 2007, which featured two distinct critical level exceedance Brahmaputra River. first hydrological evaluation Kalman filter...
Earth observation satellites yield a wealth of data for scientific, operational and commercial exploitation. However, the redistribution mass in system is not yet part standard inventory Observation (EO) products to date. It derived from Gravity Recovery Climate Experiment (GRACE) mission its Follow-On (GRACE-FO). Among many other applications, provides fundamental insights into global water cycle. Changes continental storage impact regional budget can, extreme cases, result floods droughts...
GRACE K-band intersatellite range observations have been processed in combination with precise orbit trajectories from reduced dynamic modelling and GNSS processing. These data inverted to mass equivalent quantities (water heights) by using physically motivated constraints order reduce well-known instabilities. In a first instance, the satellite are geophysical background implicitly continued downward rigorous formulation terms of reproducing kernel functions which map time variable...
Strategies and results for calibrating electric field sensors (antennas), as used in radio astronomy, onboard the spacecraft “Resonance” are presented. Calibration is performed four boom antennas cylindrical at tips. These devised measurement of fields plasma parameters. It shown that electrical representations antennas, effective length vectors, differ from their mechanical originals shortened tilted by several degrees angle. The knowledge acquired parameters great benefit to Resonance...
Abstract. The Gravity Recovery and Climate Experiment (GRACE) delivered the most accurate quantification of global mass variations with monthly temporal resolution on large spatial scales. Future gravity missions will take advantage improved measurement technologies, such as enhanced orbit configurations tracking systems, well reduced aliasing errors. In order to achieve latter, sub-monthly daily innovative models are computed. addition, non-conventional methods based radial basis functions...
Topological quantum materials hold great promise for future technological applications. Their unique electronic properties, such as protected surface states and exotic quasiparticles, offer opportunities designing novel devices, spintronics, information processing. The origin of the interplay between various orders in topological materials, superconductivity magnetism, remains unclear, particularly whether these cooperate, compete, or simply coexist. Since 2000s, combination topology matter...
Automatic speech recognition in a home environment is currently of large interest for many practical applications. It also challenging signal processing, since several problems have to be solved satisfactorily. First, degradation performance caused by room reverberations. Second, environmental noises like radio, television or kitchen devices may further degrade recognition. And third, the problem concurrent and possibly moving speakers has addressed. In this paper we present our results an...