ETD system

Electronic theses and dissertations repository

 

Tesi etd-02072018-101624


Thesis type
Tesi di dottorato di ricerca
Author
MA, HELENE
URN
etd-02072018-101624
Title
On the determination of preliminary orbits and detection of possible conjunctions for space debris
Settore scientifico disciplinare
MAT/07
Corso di studi
MATEMATICA
Commissione
tutor Prof. Gronchi, Giovanni Federico
correlatore Prof. Milani Comparetti, Andrea
Parole chiave
  • conjunction events
  • orbit determination
  • space debris
  • celestial mechanics
  • collision avoidance
Data inizio appello
22/03/2018;
Consultabilità
parziale
Data di rilascio
22/03/2021
Riassunto analitico
Since the last decades, solutions devoted to space debris issues have been investigated. Indeed, several investigations came up with the same conclusion done by the &#39;Kessler syndrome&#39;: the increase of this population could lead to an unstoppable cascade effect of collisions of objets in the near-Earth environment.<br><br>The research in this thesis focuses on the orbit determination problem and the identification of conjunctions of these objects.<br>A new algorithm is introduced and consists in determining preliminary orbits for objects in Low Earth Orbit based on correlation of radar observations.<br>Using the evolution of the trajectories, a procedure is developed to select the pairs that have potential close encounters.
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