Europa Business School

Technical University of Munich

Aristotle University of Thessaloniki (AUTH)

Εxperimental School of Aristotle University of Thessaloniki

Interim Management Officer DG DEFIS at European Commission

DG DEFIS Directorate-General for Defence Industry and Space 
Secure and Connected Space
Innovation & New Space | Space Defence

European Commission

Policy Officer

DG DEFIS  Directorate-General for Defence Industry and Space 
Innovation & Outreach
Innovation, Start-ups and Economics

Policy Assistant

DG DEFIS for Defence Industry and Space
Development and Innovation Directorate;
Space research, Innovation and Start-ups Unit.
Space Quantum team : Quantum Communication Infrastructure (QCI) and quantum gravimetry.
Tasks:
- Project Management.
- Technical and policy reports review and assessment.
- Support studies on secure connectivity and EU non-dependency COM initiatives.
- Support internal communication needs.

Interim Management Officer DG DEFIS

Consulting projects and market research reports in the Satellite Navigation, Optical Communication Systems, satellite manufacturing and launching & space industries.
- Market research for the international space industry.
- Leading coverage of emerging space markets, analyses the global market of new space landscape in terms of new companies, key market activities and funding mechanisms.
- Market analysis and forecast on Navigation, Science missions, Cargo/Crew missions, Technology Development missions, Optical SatCom.
- Focused on trends of future market performance, project feasibility studies, & competitive dynamics.

Northern Sky Research, NSR

Satellite and Space Industry Analyst

- Market research on strategic developments and key technological trends in the worldwide GNSS field and Positioning, Navigation and Timing (PNT) - (system infrastructures, user receivers, applications, and services);

- Technological benchmark and lessons learned regarding Galileo 2nd Generation (G2G) and contribution to European navigation strategy in particular in the context of the Horizon Europe programme of the EC.

- Project planning according to ECSS; two NAVISP* activities.
1. "POSITRINO - Positioning, Navigation and Timing (PNT) using neutrino particles"  
2. "GRAVEr – GNSS receiver antenna calibration service for new E-GNSS signals"
*ESA Programme for Positioning Navigation and Timing: Innovation, Competitiveness and Support for Institutional Projects

- Real-Time Kinematics (RTK) vs Precise Point Positioning (PPP) positioning solutions techniques assessment, in smartphone GNSS receiver.

ESA/ESTEC

Young Graduate Trainee (YGT) at GNSS Evolution Programme and Strategy Division

• Assessment of multi-constellation GNSS vehicle positioning in urban and interurban environments.

A 3D city model, 'Urban Trench', is introduced to simulate blockage and reflection of GNSS signals. The 'Urban Trench' model assesses the reflection environment of the city and the non-light-of-sight (NLOS) ranging errors are corrected, based on satellite elevation and a 3D surface model. Subsequently, the metric of NLOS signal exclusion using an elevation-enhanced map is developed and tested using real vehicular data in the test urban network of Nantes. A GPS&GLONASS-constellation single-frequency receiver is used during the experiment.

The performance of both systems, stand alone and in combination as dual-constellation, is estimated, compared and evaluated, with and without 'Urban Trench' model implementation. Additionally, a fault detection and exclusion test is applied, to check and enhance the integrity of the output.

Ifsttar: the French institute of science and technology for transport, development and networks
Geoloc: the Ifsttar lab for dynamic geopositioning methods and systems, contributing to the communities of transport, mobile robotics and GNSS.

IFSTTAR

Stagiaire

The research area concerns the Reference Systems for SLR orbit determination. Particularly, it deals with the processing of SLR observations for the determination of accurate orbits of spherical and non-spherical satellites with a software package developed at DGFI-TUM.

Deutsches Geodätisches Forschungsinstitut der Technischen Universität München (DGFI-TUM)

Research assistant in the research area Reference Systems for SLR orbit determination

Project "Nachtrag zur Untersuchung zu Bahnsteiggestaltung zwecks Optimierung der Haltezeiten an ausgewählten Stationen de S-Bahn München"

DB Regio AG, S-bahn München, GWT-TUD

Deutsche Bahn

Zählkraft Personenstromanalyse

Design and reconstruction of topographic map with AutoCAD

Consulting engineer office Theocharous G. - Vlysidou Z

Τrainee Surveyor

Management of land data in the context of studies Cadastre Using the ArcGIS software for studies Cadastre

Stella Strataki