FGAN contribution to the MIR deorbiting campaign 2001

Details FGAN contribution to the MIR deorbiting campaign 2001 FGAN contribution to the MIR deorbiting campaign 2001

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.498...67l&link_type=abstract

"In: Proceedings of the international workshop "MIR deorbit", 14 May 2001, ESOC, Darmstadt, Germany. Eds.: Walter Flury & Huguet

Physics

Mir, Deorbit

Scientific paper

Radar is well suited for the observation of Earth orbiting objects. Especially in the case of reentering spacecraft frequent observations from many systems at different locations are necessary for accurate prediction of reentry windows and risk assessment. For the case of the MIR station, which was the first controlled deorbiting of a large scale space vehicle, measurement data are important for the verification of orbital and attitude maneuvres and in the emergency case of a loss of control. In January 2001 the German Ministry of Defense (BMVg) agreed upon requests from the Ministry of the Interior (BMI) and national/international space agencies to give support to the operation centres and analysis teams by measurements of MIR with FGAN's Tracking and Imaging Radar (TIRA) system. Tracking data should be provided in the form of orbital element sets as well as observation vector sequences and should timely be transferred to a data dissemination centre to be implemented at ESA/ESOC. Furthermore high resolution radar images and image sequences should be gained for the analysis of the station's status and stabilization and for the verification of attitude maneuvres. After a brief introduction of the TIRA system and a discussion on the kind and quality of information gained from TIRA measurement data and on the routines developed for timely data processing and transfer, an overview about the TIRA observations of the MIR station from January to March will be given. Presented results will mainly focus on attitude analysis from radar images. Some of the drawbacks and unsolved problems will also be shortly discussed.

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