Analysis of Orbital Debris Mitigation Measures Based on the Semi-Deterministic Model SDM 4.0 (Progetti)

Type
Label
  • Analysis of Orbital Debris Mitigation Measures Based on the Semi-Deterministic Model SDM 4.0 (Progetti) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • A. Rossi, L. Anselmo, C. Pardini, G.B. Valsecchi (2009)
    Analysis of Orbital Debris Mitigation Measures Based on the Semi-Deterministic Model SDM 4.0
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Rossi, L. Anselmo, C. Pardini, G.B. Valsecchi (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • In the past, the focus of the analysis was on the low-Earth orbit regime. Meanwhile the end-of-life disposal of navigation satellites in high-Earth orbit (Glonass, GPS and Galileo) is discussed at the Inter-Agency Space Debris Coordination-Committee (IADC). Several studies have been performed showing a strong dependency of the orbital evolution on the initial conditions. It was found that the defunct spacecraft stay close to a graveyard orbit, if the initial eccentricity is ver low. However, this is a rather rough generalization and much more refined analyses are required taking into account the initial semi-major axis, inclination, right ascension of ascending node and argument of perigee. At the same time it was proposed to limit the initial eccentricity of disposed GEO spacecraft. In order to assess whether these mitigation measures will be effective to reduce the spatial density of space debris and ultimately the collision risk for operational spacecraft, long-term simulations of the space traffic need to be performed. This was the main motivation behind the development of SDM 4.0. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Attività svolta nell'ambito di un contratto dell'Agenzia Spaziale Europea (ESA) al Laboratorio di Dinamica del Volo Spaziale dell'Istituto ISTI del CNR, dell'ammontare di 200.000 euro. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • A. Rossi, L. Anselmo, C. Pardini Istituto di Scienza e Tecnologie dell'Informazione (ISTI), CNR, Pisa G.B. Valsecchi Istituto di Astrofisica Spaziale e Fisica Cosmica (IASFC), INAF, Roma (literal)
Titolo
  • Analysis of Orbital Debris Mitigation Measures Based on the Semi-Deterministic Model SDM 4.0 (literal)
Descrizione sintetica
  • The amount of space debris is steadily growing and represents an increasing hazard to manned and unmanned activities in space. A semi-deterministic model for space debris mitigation analysis (SDM 4.0) was developed at ISTI/CNR for the simulation of the long-term evolution of the space debris environment in order to validate concepts for space debris mitigation measures. The objective was to devise the necessary software tools and the related mathematical methods and algorithms. Realistic models for the launch traffic and the mitigation measures were established, and reliable orbit propagators which are appropriate for long-term integration have been analyzed, tested and applied. This comprehensive software tool, applicable from low up to super-synchronous Earth orbits, will allow ESA to contribute to the international efforts to analyse and define effective space debris mitigation measures. The first important practical application was in the framework of an international study, promoted by the Inter-Agency Space Debris Coordination Committee (IADC), on the stability of the future debris environment in low Earth orbit. The participating space agencies were ASI, ESA, ISRO, JAXA, NASA and the UK Space Agency. (literal)
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