cache RSS data for efficiency in computing all timestep SINRs

2026-04-30 10:25:40 -07:00
parent 35702a6ce2
commit 6349212dd5
3 changed files with 87 additions and 10 deletions
@@ -74,5 +74,74 @@ classdef test_rfSensor < matlab.unittest.TestCase

            tc.testClass.plotPerformance(altitude, otherSensorsPos, otherSensors);
        end
+
+        function plot_SINR_heterogenous_interferers_efficiently(tc)
+            P_TX = 1e-3;
+            BW = 20e6;
+            f_c = 2e9;
+            G_RX_dBi = 3;
+            altitude = 30;
+
+            sensor1 = rfSensor;
+            sensor1 = sensor1.initialize(P_TX, BW, f_c, G_RX_dBi, 0, 0);
+            sensor2 = rfSensor;
+            sensor2 = sensor2.initialize(P_TX, BW, f_c, G_RX_dBi, 0, 0);
+            sensor3 = rfSensor;
+            sensor3 = sensor3.initialize(P_TX, BW, f_c, G_RX_dBi, 0, 0);
+
+            pos1 = [0,  0,  altitude];
+            pos2 = [6, -4,  altitude - 1];
+            pos3 = [-2, 6,  altitude];
+
+            % Build a shared target grid
+            distances = -15:0.25:15;
+            [Xg, Yg] = meshgrid(distances, distances);
+            targetPos = [Xg(:), Yg(:), zeros(numel(Xg), 1)];
+
+            % Call 1: cache empty, does all computations for this timestep
+            [SINR1, ~, sensor1, others] = sensor1.sensorPerformance(pos1, targetPos, [pos2; pos3], {sensor2; sensor3});
+            sensor2 = others{1};
+            sensor3 = others{2};
+
+            % Calls 2 and 3 use cached data
+            [SINR2, ~, sensor2, others] = sensor2.sensorPerformance(pos2, targetPos, [pos1; pos3], {sensor1; sensor3});
+            sensor1 = others{1};
+            sensor3 = others{2};
+
+            [SINR3, ~, sensor3, ~] = sensor3.sensorPerformance(pos3, targetPos, [pos1; pos2], {sensor1; sensor2});
+
+
+            % All caches should be populated after the three calls
+            tc.assertNotEmpty(sensor1.rssCache);
+            tc.assertNotEmpty(sensor2.rssCache);
+            tc.assertNotEmpty(sensor3.rssCache);
+
+            % Plot SINR from each UAV's perspective
+            sz = size(Xg);
+            SINR1 = reshape(SINR1, sz);
+            SINR2 = reshape(SINR2, sz);
+            SINR3 = reshape(SINR3, sz);
+
+            f = figure;
+            tiledlayout(f, 1, 3, TileSpacing="compact", Padding="compact");
+
+            nexttile;
+            imagesc(distances, distances, SINR1); axis image; set(gca, YDir="normal"); hold on;
+            scatter(pos1(1), pos1(2), 80, "g", "o", LineWidth=2);
+            scatter([pos2(1), pos3(1)], [pos2(2), pos3(2)], 80, "r", "x", LineWidth=2);
+            hold off; cb = colorbar; cb.Label.String = "SINR (dB)"; xlabel("X (m)"); ylabel("Y (m)"); title("SINR: UAV 1");
+
+            nexttile;
+            imagesc(distances, distances, SINR2); axis image; set(gca, YDir="normal"); hold on;
+            scatter(pos2(1), pos2(2), 80, "g", "o", LineWidth=2);
+            scatter([pos1(1), pos3(1)], [pos1(2), pos3(2)], 80, "r", "x", LineWidth=2);
+            hold off; cb = colorbar; cb.Label.String = "SINR (dB)"; xlabel("X (m)"); ylabel("Y (m)"); title("SINR: UAV 2");
+
+            nexttile;
+            imagesc(distances, distances, SINR3); axis image; set(gca, YDir="normal"); hold on;
+            scatter(pos3(1), pos3(2), 80, "g", "o", LineWidth=2);
+            scatter([pos1(1), pos2(1)], [pos1(2), pos2(2)], 80, "r", "x", LineWidth=2);
+            hold off; cb = colorbar; cb.Label.String = "SINR (dB)"; xlabel("X (m)"); ylabel("Y (m)"); title("SINR: UAV 3");
+        end
    end
 end