- finished task 2

- fixed perform_access_analysis to use 2.4GHz instead of 2GHz
- finished task 3

lab_5/task1.m

@@ -4,6 +4,8 @@ satSim = create_satellite_sim(satConfig, groundStation);
 sampleTimes = satConfig.startTime:seconds(satConfig.sampleTime):satConfig.stopTime;
 distancesToSat = zeros(size(sampleTimes));
 elevationAnglesToSat = zeros(size(sampleTimes));
+satelitteVisibilities = zeros(size(sampleTimes));
+dopplerShifts = zeros(size(sampleTimes));
 
 progressStartText = "Starting ...";
 f = waitbar(0, progressStartText, "Name", "Task 1");
@@ -18,6 +20,8 @@ parfor idx = 1:numel(sampleTimes)
     res = perform_access_analysis(satSim, sampleTimes(idx));
     distancesToSat(idx) = res.distanceToSatellite;
     elevationAnglesToSat(idx) = res.elevationAngleToSatellite;
+    satelitteVisibilities(idx) = res.satelliteVisible;
+    dopplerShifts(idx) = res.fshift;
     send(progressQueue, sprintf("Index %d", idx));
 end
 
@@ -26,20 +30,36 @@ if ishandle(f)
     close(f);
 end
 
-figure;
-plot(sampleTimes, distancesToSat);
-grid on;
-xlabel("Time [s]");
-ylabel("Distance to Satellite [m]");
-title("Distance over time plot of satellite pass");
-
-figure;
-plot(sampleTimes, elevationAnglesToSat);
-grid on;
-xlabel("Time [s]");
-ylabel("Elevation angle to satellite [degree]");
-title("Elevation angle over time plot of satellite pass");
-
 accessAnalysisResults.times = sampleTimes;
 accessAnalysisResults.distances = distancesToSat;
-accessAnalysisResults.elevationAngles = elevationAnglesToSat;
+accessAnalysisResults.elevationAngles = elevationAnglesToSat;
+accessAnalysisResults.satelitteVisibilities = satelitteVisibilities;
+accessAnalysisResults.dopplerShifts = dopplerShifts;
+
+carrierFrequency = 2.4e9;
+timeSeconds = seconds(sampleTimes - sampleTimes(1));
+
+rangeRate = gradient(accessAnalysisResults.distances, timeSeconds);
+dopplerShift = -(rangeRate / physconst("lightspeed")) * carrierFrequency;
+
+accessAnalysisResults.geometricDopplerShifts = dopplerShift;
+
+% prevent figure plot when only the other tasks should be calculated
+% task2 needs task1
+if calc_task1
+    figure;
+    plot(sampleTimes, distancesToSat);
+    grid on;
+    xtickformat("HH:mm");
+    xlabel("Time of day [HH:mm]");
+    ylabel("Distance to Satellite [m]");
+    title("Distance over time plot of satellite pass");
+
+    figure;
+    plot(sampleTimes, elevationAnglesToSat);
+    grid on;
+    xtickformat("HH:mm");
+    xlabel("Time of day [HH:mm]");
+    ylabel("Elevation angle to satellite [degree]");
+    title("Elevation angle over time plot of satellite pass");
+end