- finished task 2

- fixed perform_access_analysis to use 2.4GHz instead of 2GHz - finished task 3
2026-06-24 21:48:12 +02:00
parent eb4d72c7c2
commit edbc22bcf6
13 changed files with 1263 additions and 348 deletions
@@ -0,0 +1,47 @@
+rxPowerStation = txPower - pathLoss;
+
+figure;
+plot(packetTimes, rxPowerStation);
+grid on;
+xtickformat("HH:mm");
+xlabel("Time of day [HH:mm]");
+ylabel("Power [dBm]");
+yline(wifiSensitivity, "--", "receive sensitivity -85 dBm");
+yline(reliableRxPower, "--", "reliable reception -75 dBm");
+title("Receive power over time at ground station plot of satellite pass");
+
+satelliteVisibilities = double(accessAnalysisResults.satelitteVisibilities);
+
+figure;
+hold on;
+plot(sampleTimes, satelliteVisibilities, "Color", [0.1 0.45 0.2]);
+
+grid on;
+xtickformat("HH:mm");
+xlabel("Time of day [HH:mm]");
+ylabel("Visibility of satellite [bool]");
+ylim([-0.05 1.05]);
+yticks([0 1]);
+yticklabels(["not visible", "visible"]);
+title("Satellite visibility over time");
+
+dopplerShiftKHz = accessAnalysisResults.dopplerShifts / 1e3;
+dopplerShiftKHz(~isfinite(dopplerShiftKHz)) = NaN;
+geometricDopplerShiftKHz = accessAnalysisResults.geometricDopplerShifts / 1e3;
+satelliteVisibilities = logical(accessAnalysisResults.satelitteVisibilities);
+
+dopplerVisibleOnly = dopplerShiftKHz;
+dopplerVisibleOnly(~satelliteVisibilities | ~isfinite(dopplerVisibleOnly)) = NaN;
+
+figure;
+hold on;
+plot(sampleTimes, geometricDopplerShiftKHz, "Color", [0.1 0.6 0.2], "DisplayName", "geometric Doppler shift");
+plot(sampleTimes, dopplerVisibleOnly, "Color", [0 0.4470 0.7410], "DisplayName", "visible dopplershift() output", "LineWidth", 2);
+
+grid on;
+xtickformat("HH:mm");
+xlabel("Time of day [HH:mm]");
+ylabel("Doppler shift [kHz]");
+yline(0, "--", "0 Hz", "HandleVisibility", "off");
+legend("Location", "best");
+title("Doppler shift over time x satellite visibility");