TIPOD

Development of High-precision Thermosphere Models for Improving Precise Orbit Determination of Low-Earth-Orbiting Satellites

THERMOSPHERE MODELS

The motion of a satellite depends on gravitational and non-gravitational accelerations. A major problem in precise orbit determination (POD) of low-Earth orbiting (LEO) objects such as satellites or space debris is modelling the thermospheric drag. It is the largest non-gravitational acceleration for satellites with altitudes lower than 1000 km and decelerates their movement.

TIPOD aims on improving the POD of LEO satellites by applying further developed thermosphere models. For this purpose, data from various satellite tracking techniques (SLR, GNSS and DORIS) are assimilated into a physical coupled thermosphere-ionosphere model.

Aalborg University contributes in estimating thermosphere density from on-board accelerometer measurements and in implementing data assimilation frameworks based on empirical and coupled thermosphere-ionosphere models (doi.10.1093/gji/ggaa507 & doi:10.1093/gji/ggz163).

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AAU Space Group - Researchers

Ehsan Forootan

Professor

Department of Planning

Phone: +45 9940 7012
Email: efo@plan.aau.dk

MAIKE SCHUMACHER

ASSISTANT PROFESSOR

Department of Planning

Email: maikes@plan.aau.dk

PROJECT NAME

Development of High-precision Thermosphere Models for Improving Precise Orbit Determination of Low-Earth-Orbiting Satellites

SHORT TITLE

TIPOD

PROJECT STATUS

Active

EFFECTIVE START/END DATE

May 2018 - May 2022

PROJECT PARTNERS

  • Aalborg University
  • Technical University of Munich
  • University of Bonn
  • German Research Center for Geosciences (GFZ)