Ionospheric Effects and Corrections



Propagation of an ionospheric perturbation front crossing Europe during the storm on 30 October 2003. The percentage deviation of the Total Electron Content (TEC) to monthly medians is shown.
Research and development activities are focused on monitoring, detection and forecasting of ionospheric processes for improving accuracy and reliability of space based positioning and navigation. Corresponding results are applicable in higher precision, safety of live applications and for improving ionospheric corrections in single frequency GNSS applications. The work is based on long-term expertise in the field of GNSS signal propagation and ionospheric research.

Fields of Research:

  • Ionospheric space weather effects
    • Development and demonstration of techniques and algorithms for monitoring the ionospheric state in near-real time by using ground and space based GNSS measurements
    • Studying ionospheric perturbations in the framework of solar-terrestrial relationships (space weather)
    • Impact on ionospheric effects on precise and safety critical GNSS applications
  • Ionospheric corrections
    • Development of methods and algorithms for retrieving ionospheric corrections and perturbation parameters from current monitoring data
    • Evaluation of the ionospheric state to match required safety regulations in safety of live applications
    • Development of correction and prediction models

Current Projects:

  • AFFECTS: Advanced Forecast For Ensuring Communications Through Space
  • EGNOS (European Geostationary Navigation Overlay Service) V3 Definition Phase (ESA project)
  • MONITOR: MONitoring of the Ionosphere by innovative Techniques, coordinated Observations and Resources
  • MuSIK: Multi Scale Ionospheric Model by Combination of modern satellite techniques
  • PRE-EARTHQUAKES: Processing Russian and European EARTH observations for earthQUAKE precursors Studies
  • TRANSMIT: Training, Research and Applications Network to Support the Mitigation of Ionospheric Threats

Finished Projects:

  • AGIM: Advanced Global Ionospheric Monitoring
  • COMET: Comparative measurements of Travelling Ionospheric Disturbances (TID)
  • CPW-TEC: Climatology of Planetary Waves seen in ionospheric F-region perturbations using TEC of GPSP
  • ETSI: Earthquake/Tsunami Signatures in the Ionosphere; eigenst√§ndiger Teil des GITEWS Projekts
  • GARMIS: Galileo Reference Mission Support
  • LINA: Local Integrity Navigation Augmentation
  • PRIS: Prediction of Ionospheric Scintillations
  • SWACI: Space Weather Application Center Ionosphere
  • SIPIC: Study and Modelling of Ionospheric Propagation Impairments at C-Band
  • SPW-TIS: Signature of Planetary Waves in the Thermosphere/Ionosphere System

Contact
Dr.rer.nat. Jens Berdermann
German Aerospace Center

Institute of Communications and Navigation
, Navigation
Tel: +49 3981 480-106

Fax: +49 3981 480-123

E-Mail: Jens.Berdermann@dlr.de
URL for this article
http://www.dlr.de/kn/en/desktopdefault.aspx/tabid-4796/7953_read-12812/
Links zu diesem Artikel
http://swaciweb.dlr.de/index.php?id=10&L=1
Texte zu diesem Artikel
Space Weather and Ionosphere (http://www.dlr.de/kn/en/desktopdefault.aspx/tabid-2204/3257_read-9150/usetemplate-print/)