Radio waves are electromagnetic waves that travel at the speed of light. They are the propagation of an oscillating electric and magnetic field oriented perpendicular to each other. When radio waves propagate through the atmosphere, extra attenuation processes come into play in addition to the inverse square law, that is, absorption and scattering. Non‐ionospheric propagation can be subdivided according to frequency into surface waves and space waves. The most basic radio communication system that can be used to send messages in Morse code is schematically illustrated. There are two basic types of digital modulation used in aviation, which is pulsed modulation where the carrier is emitted as a set of precisely timed pulses, or phase shift modulation where the carrier amplitude is continuous but its phase or frequency is shifted. The radiation emitted by an oscillating current in a wire and how it propagates are described by Maxwell's equations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Radio Propagation and Communication


    Contributors:

    Published in:

    Publication date :

    2018-11-09


    Size :

    82 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Realistic indoor radio propagation for sub-GHz communication

    Bellekens, Ben / Penne, Rudi / Weyn, Maarten | BASE | 2018

    Free access

    Radio Propagation Prediction for CBTC Data Communication Subsystem Design

    Aziminejad, Arash / Lee, Andrew W. / Epelbaum, Gabriel | British Library Conference Proceedings | 2015



    Propagation of Radio Waves

    Kozlov, Anatoly Ivanovich / Shatrakov, Yuri Grigoryevich / Zatuchny, Dmitry Alexandrovich | Springer Verlag | 2022


    Tropospheric radio propagation assessment

    Hitney, H.V. / Richter, J.H. / Pappert, R.A. et al. | Tema Archive | 1985