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Fog

Fog propagation model

Description

Model the behavior of electromagnetic radiation from a point of transmission as it travels through fog or clouds [1] by using a Fog object. Propagation models for fog are valid from 10 to 1000 GHz, assume line-of-sight (LOS) conditions, and disregard terrain, the curvature of the Earth, and other obstacles.

Creation

Create a Fog object by using the propagationModel function.

Properties

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Air temperature, specified as a scalar in degrees Celsius (C).

Data Types: double

Liquid water density, specified as a scalar in grams per cubic meter (g/m3).

Data Types: double

Object Functions

pathlossPath loss of radio wave propagation
rangeRange of radio wave propagation
addAdd propagation models

Examples

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Display the coverage area for a transmitter in thick fog.

Create a propagation model for fog. Specify the water density as 0.5 grams per cubic meter.

pm = propagationModel("fog","WaterDensity",0.5);

Create a transmitter site. Display the coverage area for the transmitter. Propagation models for fog require transmitter frequencies between 10 and 1000 GHz.

tx = txsite("Name","Apple Hill","TransmitterFrequency",1e10, ...
    "Latitude",42.3001,"Longitude",-71.3604);
coverage(tx,pm)

References

[1] International Telecommunications Union Radiocommunication Sector. Attenuation due to clouds and fog. Recommendation P.840-6. ITU-R, approved September 30, 2013. https://www.itu.int/rec/R-REC-P.840-6-201309-S/en.

[2] Seybold, John S. Introduction to RF Propagation. Hoboken, N.J: Wiley, 2005.

Introduced in R2017b