Satellite Coverage Map for Mauritius Airspace

Hi everyone, I am trying to simulate the satellite coverage of Iridium Constellation over the Mauritian Airspace and I am having the following error:

Error using bufferm

Expected BUFWIDTH to be positive.

Error in bufferm (line 62)

validateattributes(bufwidth, {'numeric'}, ...

Error in fieldOfViewShape (line 21)

[latBuff, lonBuff] = bufferm(lla(1), lla(2), earthCentralAngle, "outPlusInterior");

Error in satcoverage (line 14)

fov = fieldOfViewShape(lla(:, :, satind), halfBeamWidth);

Answer 1

[Naren]

Hello Fabrice,

The error states that the `bufwidth` must be a positive scalar; please check whether you have assigned the correct value to the variable `bufwidth`. Additionally, to simulate satellite coverage of the Iridium constellation over Mauritian airspace, ensure you have the correct geographical coordinates. Also, verify that 'Mauritius' is included in the 'landareas.shp' file when adding a grid of ground stations covering 'Mauritius'.

For further inromation on this topic, please refer to the following documentation:

https://www.mathworks.com/help/satcom/ug/coverage-maps-for-satellite-constellation.html

Regards.

[fabrice darnel]

Hello @Naren and thank you for your comments.

Indeed I have included the Mauritius shape file, see below outputs:

Shape NATURAL NAME

____________ ___________ _______________________

geolineshape "shoreline" ""

geolineshape "shoreline" ""

geolineshape "shoreline" ""

geolineshape "water" "Mare Longue Reservoir"

geolineshape "shoreline" ""

geolineshape "shoreline" ""

mauritiusBuffered =

geopolyshape with properties:

NumRegions: 1

NumHoles: 0

Geometry: "polygon"

CoordinateSystemType: "geographic"

GeographicCRS: []

700×383 geopointshape array with properties:

NumPoints: [700×383 double]

Latitude: [700×383 double]

Longitude: [700×383 double]

Geometry: "point"

CoordinateSystemType: "geographic"

GeographicCRS: []

i have also plotted the buffered coastline and grid points

and the viewer does display the satellites their respective signal propagation (see picture below) and I don't know where it is going wrong. The coordinates and other input parameters seems ok to me. Is it possible you get to have a look at the modifications that I made?