Course Details for A.Y. 2017/2018

The information on this page refer to the academic year 2017/2018. Therefore, several links are not available and data may be incomplete. To read the current information on the course, if it is still available, go to the university course catalogue . To read information relating other academic years, use the list at the bottom of this page.

A. Year:

2017/2018

Name:

Radiopropagazione E Telerilevamento / Remote Sensing and Radio-wave Propagation

Type:

Course

Basic information

Code:

I0030

Sector:

ING-INF/02

Credits:

: Laurea Magistrale in Ingegneria delle Telecomunicazioni 9 CFU (b)

Term:

1^st semester

Degree(s):

Laurea Magistrale in Ingegneria delle Telecomunicazioni 2^nd anno curriculum Comune Compulsory

Language:

English

Teacher(s):

Piero Ciotti

Course Objectives

The objective of this course is to introduce to the students the basics of remote sensing and radiowave propagation. On successful completion of this module, the student should be able to model interactions between electromagnetic radiation and natural media, to develop suitable inversion methods for the retrieval of environmental parameters, to manage several radiowave propagation models and to calculate the link budget for many radio communications systems

Course Content

Remote Sensing
Physical properties of the atmosphere; interaction of the e.m. wave with atmospheric gases and particles; radiative transfer equation
Radiometer systems. Passive remote sensing of the atmosphere; inverse problem and inversion techniques; ground- and satellite-based radiometry: retrieval of atmospheric temperature, water (vapour and liquid), precipitations
Passive remote sensing of the sea surface properties: sea surface temperature, salinity, wind speed at the surface; detection of oil spills; monitoring of sea ice
Passive remote sensing of solid earth; bare soil and vegetation emission
Radio-wave propagation: physical phenomena, materials, frequency bands and applications
Geometrical Optics: eikonal equation, ray optics in homogeneous, isotropic, lossless media; flux tube, wavefront, principal radii of curvature, spreading factor, ray trajectory. Reflection from metallic and dielectric surfaces. Fermat’s principle. Basics of Geometrical Theory of Diffraction. Ray tracing techniques
Path loss: Friis’s formula, fast fading, slow fading, two-rays flat-Earth model. Laboratory activity: path loss measurement of some radio-links
Diffraction loss: half-plane diffraction, Fresnel’s ellipsoid, knife edge diffraction, Lee’s model, aperture diffraction, multiple knife-edge, Deygout’s method, Giovannelli’s method
Terrestrial path-loss models: macro-cell, micro-cell, pico-cell, empirical and semi-empirical path-loss models, Longley-Rice model, Okomura-Hata model, Ikegami model, dual-slope model
Satellite radio-link: leo,meo and geostationary satellites, up-link, down-link, non-regenerative transponder, Earth station, reflector antennas, antennas parameters, gain, beamwidth, gain fall-out. Polarization mismatch and misalignment losses, link budget for a geostationary satellite. ITU models for attenuation by rain, clouds, sand and atmospheric gases
Ionospheric propagation: layered model of ionosphere, Dielectric constant of ionized gas, MUF, skip distance. Effects of the Earth’s magnetic field, conductivity tensor, Appleton-Hartree equation, ordinary wave, extraordinary wave, circularly polarized waves, Faraday’s rotation. Attenuation, delay and depolarization

Learning Outcomes (Dublin Descriptors)

On successful completion of this course, the student should

have profound knowledge of fundamentals of remote sensing techniques and radio-propagation models; have knowledge and understanding of the theory and models of satellite imaging and radiowave propagation
be able to select the appropriate remote sensing and path-loss algorithms for a given application; understand and explain the features of remote sensing techniques and radio-links
demonstrate skill to communicate through written paper and oral discussions and ability to make independent decisions in problem solving
acquire capacity to read and understand texts of relevant scientific and technical literature on antennas and related topics

Prerequisites and Learning Activities

The student must know the theory of electromagnetic fields, transmission lines, field theory for guided waves and electric circuits

Assessment Methods and Criteria

Written and oral exam

Textbooks

Saunders, Antennas And Propagation for Wireless Communication Systems , Wiley.
Collin, Antennas and radiowave propagation , McGrawHill.
F.Ulaby, R. Moore, A. Fung, Microwave Remote Sensing , Artech House. (vol. 1-3) 1981-1986.
Maral, Bousquet, Satellite Communications Systems: Systems, Techniques and Technology , Wiley.

Notes

THIS COURSE IS COMPOSED OF TWO MODULES: 1) REMOTE SENSING 6 ECTS, 2) RADIO-WAVE PROPAGATION 3 ECTS

Course page updates

This course page is available (with possible updates) also for the following academic years:

To read the current information on this course, if it is still available, go to the university course catalogue .

Course information last updated on: 27 ottobre 2016, 16:14