ETD system

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Tesi etd-02282011-152755


Thesis type
Tesi di dottorato di ricerca
Author
SAVERINO, ANNA LISA
URN
etd-02282011-152755
Title
Adaptive waveform algorithms for HF-OTH skywave radar
Settore scientifico disciplinare
ING-INF/03
Corso di studi
TELERILEVAMENTO
Commissione
tutor Prof. Dalle Mese, Enzo
tutor Ing. Martorella, Marco
tutor Prof. Berizzi, Fabrizio
Parole chiave
  • waveform
  • skywave
  • radar
Data inizio appello
07/04/2011;
Consultabilità
completa
Riassunto analitico
Since 1960, Over the Horizon radars have been studied; they fall into two types: Sky-wave and Surface-wave radar systems, classified as<br>a function of electromagnetic waves propagation mode. The HF-OTH skywave performance strongly depends on several space-time variant factors<br>such as, propagation channel, external noise (environment and man-made noise) and frequencies national plan usage. This implies that a HF<br>system must have a high level of adaptively in order to fit the external constrains. This thesis is concerned with a software-defined frequency<br>management system whose main task is to select the transmitted frequencies and elevation angles to be used in transmission according to the ionosphere channel, external noise intensity and available channels; special attention was paid to the study of waveforms and specifically to development of a technique for set the waveform parameters in an adaptive way depending on the operating modes.<br><br>A System architecture accomplish the work.
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