How do i setup coverage by longley rice model as transmitter to eight other receiver sites?

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Aloysius Kuon
Aloysius Kuon 2020-5-7
评论： Curious 2022-7-16
Hi,
Does anybody have experience in setting up a code to determine difference between transmitter antenna model? Or perhaps there's something wrong in the code?
1) Normal dipole antenna
% Define transmitter site at Ayer Rajah Telecoms
fq = 3.5e9; % 3.5 GHz
tx = txsite('Name','Ayer Rajah Telecoms', ...
'Latitude',1.308485, ...
'Longitude',103.776380, ...
'Antenna',design(dipole,fq), ...
'TransmitterFrequency',fq, ... % Units: Hz
'TransmitterPower',5); % Units: Watts
% Define receiver sites in several surrounding towns and cities
rxNames = {...
'SIT@SP', ...
'Tennis Courts', ...
'Dover International Court Bus Stop', ...
'Opposite ACS Independent', ...
'ACS Independent', ...
'Opposite ACS Boarding School', ...
'Fairfield Methodist Primary School',...
'Fusionopolis'};
rxLocations = [1.307522 103.777824; ... % SIT@SP
1.307118 103.778666; ... % Tennis Courts
1.306243 103.780141; ... % Dover International Court Bus Stop
1.305326 103.781079; ... % Opposite ACS Independent
1.303722 103.781820; ... % ACS Independent
1.302816 103.782823; ... % Opposite ACS Boarding School
1.300585 103.784496;... % Fairfield Methodist Primary School
1.299009 103.787652]; % Fusionopolis
% Define receiver sensitivity. Sensitivity is the minimum signal strength in
% power that is necessary for the receiver to accurately detect the signal.
rxSensitivity = -66.5; % Units: dBm
rxs = rxsite('Name',rxNames, ...
'Latitude',rxLocations(:,1), ...
'Longitude',rxLocations(:,2), ...
'Antenna',design(dipole,tx.TransmitterFrequency), ...
'ReceiverSensitivity',rxSensitivity,...
'AntennaHeight', 10); % Units: dBm
viewer = siteviewer;
show(tx)
show(rxs)
viewer.Basemap = "openstreetmap";
coverage(tx,'freespace', ...
'SignalStrengths',rxSensitivity)
link(rxs,tx,'freespace')
2) Longley Rice
% Define transmitter site at Ayer Rajah Telecoms
fq = 3.5e9; % 3.5 GHz
tx = txsite('Name','Ayer Rajah Telecoms', ...
'Latitude',1.308485, ...
'Longitude',103.776380, ...
'Antenna',design(dipole,fq), ...
'TransmitterFrequency',fq, ... % Units: Hz
'TransmitterPower',5); % Units: Watts
% Define receiver sites in several surrounding towns and cities
rxNames = {...
'SIT@SP', ...
'Tennis Courts', ...
'Dover International Court Bus Stop', ...
'Opposite ACS Independent', ...
'ACS Independent', ...
'Opposite ACS Boarding School', ...
'Fairfield Methodist Primary School',...
'Fusionopolis'};
rxLocations = [1.307522 103.777824; ... % SIT@SP
1.307118 103.778666; ... % Tennis Courts
1.306243 103.780141; ... % Dover International Court Bus Stop
1.305326 103.781079; ... % Opposite ACS Independent
1.303722 103.781820; ... % ACS Independent
1.302816 103.782823; ... % Opposite ACS Boarding School
1.300585 103.784496;... % Fairfield Methodist Primary School
1.299009 103.787652]; % Fusionopolis
% Define receiver sensitivity. Sensitivity is the minimum signal strength in
% power that is necessary for the receiver to accurately detect the signal.
rxSensitivity = -66.5; % Units: dBm
rxs = rxsite('Name',rxNames, ...
'Latitude',rxLocations(:,1), ...
'Longitude',rxLocations(:,2), ...
'Antenna',design(dipole,tx.TransmitterFrequency), ...
'ReceiverSensitivity',rxSensitivity,...
'AntennaHeight', 10); % Units: dBm
pm = propagationModel('longley-rice','TimeVariabilityTolerance',0.7)
viewer = siteviewer;
show(tx)
show(rxs)
viewer.Basemap = "openstreetmap";
ss = sigstrength(rxs,tx,pm)
%coverage(rx, 'PropagationModel', pm);
%coverage(tx,'freespace', ...
% 'SignalStrengths',rxSensitivity)
coverage(tx,rxs,pm,"SignalStrengths",-66.5:-5)
link(rxs,tx,'freespace')

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回答（1 个）

Curious
Curious 2022-6-6
Your code works well on longley rice model..

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