A5009423476- Spacecraft Design and Technology
- Ionosphere and magnetosphere dynamics
- Satellite Communication Systems
- Solar and Space Plasma Dynamics
- Spacecraft and Cryogenic Technologies
- Geomagnetism and Paleomagnetism Studies
- Industrial Vision Systems and Defect Detection
- Antenna Design and Optimization
- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Advanced Antenna and Metasurface Technologies
- Soil Moisture and Remote Sensing
- Antenna Design and Analysis
- Earthquake Detection and Analysis
- Mechanical Systems and Engineering
- Water Quality Monitoring and Analysis
- Fault Detection and Control Systems
- Advanced Numerical Analysis Techniques
- Electrical and Bioimpedance Tomography
- Spacecraft Dynamics and Control
- Space Satellite Systems and Control
- Rocket and propulsion systems research
- Advanced Vision and Imaging
- Material Properties and Applications
- Gas Sensing Nanomaterials and Sensors
Graz University of Technology
2020-2024
Austrian Academy of Sciences
2016
Space Research Institute
2016
In this study, we present a new method for forecasting arrival times and speeds of coronal mass ejections (CMEs) at any location in the inner heliosphere. This approach enables adoption highly flexible geometrical shape CME front with an adjustable angular width radius curvature its leading edge, i.e., assumed geometry is elliptical. Using, as input, Solar TErrestrial RElations Observatory (STEREO) heliospheric imager (HI) observations, elliptic conversion (ElCon) introduced combined use...
ABSTRACT Prediction of the effects coronal mass ejections (CMEs) on Earth strongly depends knowledge interplanetary magnetic field southward component, B z . Predicting strength and duration inside a CME with sufficient accuracy is currently impossible, forming so-called problem. Here, we provide proof-of-concept new method for predicting arrival time, speed, , resulting disturbance storm time ( Dst ) index based only data, measured in situ inner heliosphere (<1 au). On 2012 June 12–16,...
Abstract The space industry is one of today’s major growth markets and a very interesting business sector for innovation, science, technology. In the last century, has dramatically changed undergone strong commercialization referred to as “New Space”. addition commercialization, concept CubeSats become well established in market during decade. European Space Agency (ESA) acknowledged this trend uses CubeSat nanosatellites projects like OPS-SAT mission. state-of-the-art embedded systems...
Abstract OPS-SAT is an ESA nanosatellite launched in December 2019. The spacecraft open for third-party experiments, which can use almost all functions provided by the and take full control of it. Depending on experiment usage payload, power consumption may be as small a few watts but exceed 30 W at load. peak production lies same order magnitude, highly demanding thermal regulation. This article describes preparation execution Thermal Vacuum (TVAC) test campaign discusses limitations...
Abstract Developing measurement devices and methods to track increasingly stringent emission standards, including particle number, is crucial. This paper presents a novel analytical model describe the signal response of an electrostatic sensor not only mass concentration, but also number concentration in-flowing particles. The uniqueness this lies in its ability calculate as function diameter, enabling determination from signal. considers effects aerosol flow, electrode voltage temperature,...
After the successful launch of ESA OPS-SAT Nanosatellite in December 2019, Institute Communication Networks at Graz University Technology (TUG) has started its work on a new second-generation Software Defined Radio (SDR) transceiver platform for PRETTY mission. The mission goal is demonstration passive reflectometry concept with an SDR 3U Nanosatellite. satellite requires powerful receiver that extends functionality and performance first-generation used OPS-SAT. There are many lessons...
OPS-SAT is a 3U CubeSat, designed for versatile use as an experimental platform industry and universities, to demonstrate new operational concepts prototype software in real space environment. The satellite offers numerous payloads alongside the bus, all of which might be used by experiment. unpredictable nature experiments with respect payload components raises certain unknowns, particular concerning power consumption. As result, thermal behaviour throughout depends largely on several...
The PRETTY mission is a satellite of the European Space Agency (ESA) with goal to demonstrate concept passive reflectometry small and cost-efficient 3U Nanosatellite. Passive allows characterisation Earth surface properties height, by correlating direct reflected Global Positioning System (GPS) signals. focuses on height. system realized as Software Defined Radio (SDR) high-gain GPS patch antenna array that receives very weak signals from Earth's surface. resides outer contact harsh space...
Communication is a core functionality of any satellite. Satellites always need to exchange data. This data passed through chain components representing the communication chain. On ESA's OPS-SAT mission software experiments are running on processing platform. They have be uploaded and their results downloaded. Therefore, needs support high bandwidths enable these operations. Moreover, OPS-SAT's reconfigurable can switched between nominal bypass mode. mode enables direct access for experiment...
The main payload of the PRETTY satellite is for passive reflectometry. For this purpose, a Software-Defined Radio receiver with two receive channels and custom-built patch antenna to correlate direct GPS signals reflected signal from Earth are used. A thorough characterisation utmost importance identify sources error, especially temperature influence. In particular, amplitude digital output phase shift between input characterised over operating range. conversion measurement points at...