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- W1495991277 abstract "Radio propagation modelling is achieved using mathematical algorithms for the frequency band and application. This chapter describes about environmental factors to be modelled depend on the frequency band and the link topology. For HF skywave, this will be the Ionospheric characteristics and the receiver environment, and for VHF and above, both atmospheric, terrain and terrain clutter are important. The parameters required for ES systems such as detection, intercept and direction finding are similar to those for communications. However, the characteristics are normally required to examine the transmission of the wanted target into the ES system are slightly different. For antennas near the ground, conductivity and permittivity affect propagation. This is particularly true for HF groundwave, but is also true for higher frequencies where the antennas are less than a few wavelengths above the ground. Sunspot numbers are predicted into the future using smoothed curves based on analysis of historical data. Controlled Vocabulary Terms acoustic materials; antennas; capacitance; ionosphere; radiowave propagation" @default.
- W1495991277 created "2016-06-24" @default.
- W1495991277 creator A5021814349 @default.
- W1495991277 date "2010-12-20" @default.
- W1495991277 modified "2023-09-23" @default.
- W1495991277 title "Data Requirements for Radio Prediction" @default.
- W1495991277 doi "https://doi.org/10.1002/9780470977170.ch11" @default.
- W1495991277 hasPublicationYear "2010" @default.
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