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ELT-029
Electromagnetism, propagation, antennae, furtivity - 2019

Radio propagation

Radioelectric propagation in open space and above ground

OBJECTIVE :

This course provides engineers concerned by the major application domains of electromagnetism (telecommunications, radar, satellite navigation, electronic warfare, etc.) with an overview of the issues of radio wave propagation and an understanding of the related physics. The course outlines many applications of propagation models to the study of these systems either to optimize their performance or use or to ensure better inter-system compatibility.

COURSE DURATION AND TIMETABLE :

The course lasts 5 days (30 hours) and includes:

  • 20 hours of lectures with theoretical principles and applications
  • 10 hours of exercises

GENERAL APPROACH :

The course is structured around 2 related areas:

  • An analytical look at each propagation parameter focused on understanding the mechanisms in order to evaluate their influence on a propagation assessment in various environments.
  • A look at systems as a whole, combining individual phenomena in order to better understand performance limitations due to propagation and to optimize the performance of these systems.

Engineering design and demonstrations of software tools integrating and modeling the multiple aspects of propagation illustrate these different areas and promote dialog among learners.

Helpful if also taking courses ELA 006, ELA 007, ELA 013, ELA 024 and SYS 036.

PREREQUISITE :

Course level: Basic

To fully benefit from this course, we recommended general knowledge of the propagation conditions of electromagnetic waves either in free space or on application systems and the processing of the corresponding signals.

COURSE DIRECTOR(S) :

Vincent GOBIN:

Head of Unit "Antennas, Materials and EM Modeling" for the Electromagnetism and Radar Department at ONERA, Toulouse.

Joël LEMORTON:

Head of "Radiocommunications, antennas and radio propagation" at ONERA, Toulouse

CONTENT :

UNDERSTANDING MECHANISMS OF PROPAGATION

  • Summary of basic properties
    • Maxwell equations
    • Ideal systems (weakening in free space, ideal links)
  • Propagation media
    • Ionosphere, troposphere
    • Climate and/or weather influence
    • Influence and nature of soils and vegetation and natural or urban obstacles
    • Urban environments (outdoor, indoor)
    • Description of the main propagation measurement techniques
  • General laws of propagation
    • Surface wave and ground wave
    • Spherical earth assumptions
    • Influence of soil, sea or atmosphere (reflection, attenuation, refraction, diffraction, scintillation, etc.)
    • Multipath propagation

 

INFLUENCE OF PROPAGATION IN THE CONTROL OF "SYSTEM" APPLICATIONS

  • Modeling complex environments
    • Solving Maxwell's equations
  • "Exact" models and limitations, time/frequency approaches
    • Specialized propagation models
    • "Parabolic" equations
    • Statistical and behavioral models
    • Channel models
  • Applications on themes
    • Land-space links, ionospheric and tropospheric effects on a link, compensation techniques
    • Radar and radio beams: low-level spread over the sea or ground
    • Terrestrial or satellite communications with mobile and satellite navigation: propagation in urban areas or inside buildings
    • Aeronautical links
    • Jamming and noise, interference

WHEN AND WHERE :

Scheduled in French:

TOULOUSE: Cancelled - Upcoming date, please consult us.

 

For the English realization, please, consult us.

 

 

COURSE FEES :

€1,840 excluding tax (20% VAT)

See general terms

 

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