Course Details for A.Y. 2017/2018
Name:
Radiopropagazione E Telerilevamento / Remote Sensing and Radio-wave Propagation
Basic information
Credits:
: Laurea Magistrale in Ingegneria delle Telecomunicazioni 9 CFU (b)
Degree(s):
Laurea Magistrale in Ingegneria delle Telecomunicazioni 2nd anno curriculum Comune Compulsory
Language:
English
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