- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Advanced Frequency and Time Standards
- Ionosphere and magnetosphere dynamics
- Inertial Sensor and Navigation
- Astronomical Observations and Instrumentation
- Insect Utilization and Effects
- Insect and Arachnid Ecology and Behavior
International Hellenic University
2023
Collecte Localisation Satellites (France)
2018-2020
Géosciences Environnement Toulouse
2018-2019
Centre National d'Études Spatiales
2018-2019
Observatoire Midi-Pyrénées
2018-2019
Technical University of Munich
2015
Precise point positioning (PPP) has been used for decades not only general needs but also geodetic and other scientific applications. The CNES-CLS Analysis Centre (AC) of the International GNSS Service (IGS) is performing PPP with phase ambiguity resolution (PPP-AR) using zero-difference fixing approach known as “Integer PPP” (IPPP). In this paper we examine postprocessed kinematic PPP-AR Galileo-only, GPS-only Multi-GNSS (GPS + Galileo) constellations. interest to accuracy each system...
On February 11, 2019, four additional Galileo satellites were put into service, approaching the completion of European global navigation satellite system constellation. For first time, performance in terms high-accuracy precise point positioning (PPP) can be evaluated. The results presented this paper are based on one full week (February 11–17, 2019) post-processed kinematic for a set fixed stations at 30-s sampling. Due to availability orbit and "integer" clock products, delivered by...
<p><span><span>The Precise Point Positioning (PPP) technique using the GPS has become a popular alternative to differential approach. Thanks MGEX pilot project of IGS, precise orbit and clock products from other constellations like Galileo, Beidou, GLONASS are today available. This presentation focusses on Galileo systems compares their individual performance combined processing....