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Speterius
Speterius

Reputation: 147

How to plot a satellite ground track onto a map projection in Matlab

I'm trying to plot the ground-track of a satellite in a given orbit in Matlab. I already have the data sets that contain the x, y, z position of the satellite as well as the longitude and latitude data. I only have a problem with plotting it.

I already made a scatter3(x, y, z) graph which looks okay but I want to make a 2D projection onto a map in the well-known ground-track style. If I simply do plot(longitude, latitude) the graph will by wierd as you would expect without any projection.

My data:

[x; y; z; long; lat]

All five are arrays containing a few revolutions worth of position data. How do I make an earth-map like 2D - plot where the lines look like sinusoids? I couldn't find anything in Matlab's help section about projections.

Upvotes: 2

Views: 4047

Answers (1)

Speterius
Speterius

Reputation: 147

The best thing I found was using the "worldmap world" function which looks like the following:

worldmap world
load coastlines
[latcells, loncells] = polysplit(coastlat, coastlon);
plotm(coastlat, coastlon, 'green')
hold on
plotm(lat, long, 'blue')

where lat and long are the vectors containing the position data.

Upvotes: 1

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