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Risorsa bibliografica obbligatoria
Risorsa bibliografica facoltativa
Scheda Riassuntiva
Anno Accademico 2017/2018
Scuola Scuola di Ingegneria Industriale e dell'Informazione
Insegnamento 096112 - RADIO AND OPTICAL WAVE PROPAGATION
Docente Luini Lorenzo
Cfu 5.00 Tipo insegnamento Monodisciplinare

Corso di Studi Codice Piano di Studio preventivamente approvato Da (compreso) A (escluso) Insegnamento
Ing Ind - Inf (Mag.)(ord. 270) - MI (474) TELECOMMUNICATION ENGINEERING - INGEGNERIA DELLE TELECOMUNICAZIONI*AZZZZ096112 - RADIO AND OPTICAL WAVE PROPAGATION

Programma dettagliato e risultati di apprendimento attesi

Objectives of the course

The contents of the course are organized in such a way to fit the actual position of a communication engineer. As a consequence, the course is not too applicative (useful in practice, but limited in education) neither too theoretical (specific topics can be investiagated in the scientific literature). The result is a course where, first, the physical aspects of the phenomena are duly introduced and, second, the theory behind them is addressed.

 

Detailed content

Introduction: the main protagonists in the history of electromagnetic propagation.

The electromagnetic spectrum: frequency bands and spectrum management.

Main features of electromagnetic waves (frequency, wavelength, polarization, ...) and electromagnetic characterizations of materials (electric permittivity and magnetic permeability, condictivity, ...).

Characterization of the radio channel in terms of single and multiple wave components: direct, reflected, diffracted and diffused waves.

Wave propagation in real environment. The ionosphere, the non-ionized atmosphere, and the ground. Physical characterization of the medium and electromagnetic description.

Propagation in the ionosphere and impact on Global Navigation Satellite Systems (GNSS). Refraction, attenuation, Faraday rotation, phase and group delay.

Propagation in the presence of ground. The ground wave: direct, reflected, surface and evanescent wave components, knife edge diffraction, Fresnel ellipsoids.

Propagation in the non-ionized atmosphere (troposphere) and impact on radio relay links, and Earth to space (HAPs, LEO, MEO, GEO satellites, Deep Space probes) links. Clear air propagation: refraction, attenuation and scintillation. Propagation through clouds. Adverse weather disturbances: attenuation, depolarization, electromagnetic interference due to hydrometeors.

Atmospheric and extra-atmospheric noise sources: impact on the signal detection and some concepts on passive remore sensing .

Statistical characterization of the radio channel and system design: the link budget. Fade mitigation techniques (i.e. site, frequency and time diversity, link power control).

Free space optical wave propagation: the optical channel, transmitters and receivers. Advantages and limitations of FSO. Impairments due to hydrometeors (fog and clouds), and to clear air (turbulence). Applications: ground links and Earth to space links.


Note Sulla Modalità di valutazione

Written and oral test


Bibliografia
Risorsa bibliografica facoltativaJ.A. Richards, Radiowave propagation. An introduction for the non specialists, Editore: Springer
Risorsa bibliografica facoltativaJ.E. Allnutt, Satellite to ground radiowave propagation, Editore: IET
Risorsa bibliografica facoltativaC. Levis, J. T. Johnson, F. L. Teixeira, Radiowave Propagation: Physics and Applications , Editore: Wiley
Risorsa bibliografica facoltativaA. Paraboni, M. D'Amico, Radiopropagazione, Editore: McGraw-Hill

Mix Forme Didattiche
Tipo Forma Didattica Ore didattiche
lezione
30.0
esercitazione
20.0
laboratorio informatico
0.0
laboratorio sperimentale
0.0
progetto
0.0
laboratorio di progetto
0.0

Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua Inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese
schedaincarico v. 1.6.6 / 1.6.6
Area Servizi ICT
25/07/2021