About IWGI
The Workshop on GNSS Ionosphere (IWGI2026) - Remote Sensing Techniques and Applications is sponsored by the German Aerospace Center (DLR). Within the scope of a Sino-German project the 1st IWGI workshop was held in Shanghai, China during November 4-6, 2018 and jointly organized by Shanghai Astronomical Observatory (SHAO) and German Aerospace Center (DLR). In continuation the 2nd and 3rd IWGI workshops were held in Neustrelitz, Germany during 23-25 September 2019 and 26-28 September 2022, respectively and jointly organized by DLR and SHAO. The IWGI2026 becomes the 4th such international workshop to be organized on similar research topics by the DLR Neustrelitz team.
Ionospheric refraction is considered as one of the major accuracy limiting factors in microwave space-based geodetic techniques such as the GPS (Global Positioning System), SLR (Satellite Laser Ranging), VLBI (Very Long Baseline Interferometry), DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite) and satellite altimetry. All trans-ionospheric microwave signals are subject to ionospheric refraction and subsequent delays in the travel time. The use of multi-frequency and multi-GNSS observations enables precise remote sensing of the ionosphere and thus mitigation of ionospheric effects in numerous applications. This leads to unprecedented accuracy improvement in GNSS applications. Moreover, precise time and frequency transfer may lead to new applications in navigation, Earth observation, solar system science and telecommunications.
The Workshop on GNSS Ionosphere 2026 (IWGI2026) will provide a platform for scientists and engineers to communicate and exchange their views on ionospheric theory, methods, technologies, applications and future challenges. The workshop is open to all scientists who may have the latest results and developments in ionosphere reconstruction, modelling, monitoring techniques and prediction methodologies as well as ionospheric scintillation and propagation effects on microwave space-based geodetic techniques such as the GNSS, SLR, VLBI, DORIS etc. and their mitigation using multi-frequency, multi-sensors observations. Space weather impact studies on Earth/Space systems and infrastructures are also welcome.
Scientific Organizing Committee (SOC)
- Dr. M Mainul Hoque, German Aerospace Center (DLR), Germany
- Dr. Jens Berdermann, German Aerospace Center (DLR), Germany
- Dr. Norbert Jakowski, German Aerospace Center (DLR), Germany
- Dr. Stefan Buchert, Swedish Institute of Space Physics (IRF) Uppsala, Sweden
- Prof. Dr. Pawel Wielgosz, University of Warmia and Mazury in Olsztyn (UWM)
- Prof. Dr.-Ing. Lambert Wanninger, Technische Universität Dresden (TUD), Germany
- Prof. Dr. Melessew Nigussie Gereme, University of Bahir Dar, Ethiopia
- Dr. Ningbo Wang, Chinese Academy of Sciences (CAS), Beijing, China
Local Organizing Committee (LOC)
- Dr. M Mainul Hoque, German Aerospace Center (DLR), Germany
- Dr. Maximilian Semmling, German Aerospace Center (DLR), Germany
- Ms Andrea Böhme, German Aerospace Center (DLR), Germany
Topic Areas
- Space and ground-based ionosphere reconstruction techniques and measurements
- Data assimilation, modelling, prediction and validation
- Space-based radio occultation techniques and measurements
- Plasmasphere, ionosphere and thermosphere coupling processes
- Ionospheric scintillation and effects on navigation, positioning and timing applications
- Ionospheric perturbation indices and scales
- Remote sensing of lower atmosphere
- Ionosphere and GNSS reflectometry
- Space weather impact on Earth/Space systems and infrastructures
- Miscellaneous