April – Satellite communication toolbox in Matlab

Matlab's Satellite Communication Toolbox can be used to study and visualize satellite networks. The following code places a terrestrial station in Otaniemi, and a LEO satellite in $2000$ km tracking the station. Satellite have to be at least in a elevation angle of $35$ degrees to contact to the base station. Satellites field of view and a $3$ dB footprint of width $1.5$ degrees is also represented.

clear all;
close all;

startTime = datetime(2020,8,19,20,55,0); % 19 August 2020 8:55 PM UTC
stopTime = startTime + days(1);          % 20 August 2020 8:55 PM UTC
sampleTime = 60;                         % seconds
sc = satelliteScenario(startTime,stopTime,sampleTime);


semiMajorAxis = (6378 + 2000)*1000;          % meters
eccentricity = 0;
inclination = 90;                   % degrees
rightAscensionOfAscendingNode = 0; % degrees
argumentOfPeriapsis = 0;           % degrees
trueAnomaly = 0;                   % degrees
sat1 = satellite(sc, ...
    semiMajorAxis, ...
    eccentricity, ...
    inclination, ...
    rightAscensionOfAscendingNode, ...
    argumentOfPeriapsis, ...
    trueAnomaly, ...
                 "Name","Satellite", ...
                 "OrbitPropagator","two-body-keplerian");

sat1.LabelFontSize = 30;
cam1 = conicalSensor(sat1,"MaxViewAngle",90)
cam2 = conicalSensor(sat1,"MaxViewAngle",1.5/2)

name = "Test Transmitter";
minElevationAngle = 35; % degrees
lat = 60.185;
lon = 24.83;
geoSite = groundStation(sc, lat, lon, "Name", name, "MinElevationAngle", minElevationAngle)
geoSite.LabelFontSize = 30;
ac1 = access(cam1,geoSite);
ac2 = access(cam2,geoSite);

fov1 = fieldOfView(cam1, "LineColor",'blue', "LineWidth", 10)
ac1.LineColor = 'black';

fov2 = fieldOfView(cam2, "LineColor", 'green', "LineWidth", 10)

pointAt(sat1,geoSite);

play(sc);

Output:

References:

• Mathworks