Add Example

2024-11-11 16:32:53 +08:00
parent a2cb6d1825
commit 29ae9585f9
56 changed files with 4029 additions and 0 deletions
@@ -0,0 +1,47 @@
+function [ target_list_RDA, target_map ] = rda_detection(stat_RD, P_fa)
+% Target detection, estimating distance, velocity, and angle intervals
+%
+% Usage: 
+% [target_list_RDA, target_map] = rda_detection(stat_RD, P_fa)
+%
+% Inputs:
+%   stat_RD:            Range-Doppler statistics
+%   P_fa:               Probability of false alarm
+%
+% Outputs:
+%   target_list_RDA:    Target list include range, doppler and angle information
+%   target_map:         Show targets in RD map
+
+
+    % parameters
+    [lenA, lenR, lenP] = size(stat_RD);
+    target_map = zeros(lenR, lenP);
+    
+    % detection threshold
+    d_thd = chi2inv(1 - P_fa, 2) / 2;
+    
+    % find target
+    target_list_RD = [];
+    for i = 1: lenA
+        RD_map = squeeze(stat_RD(i, :, :));
+        detect_map = zeros(size(RD_map));
+        detect_map(RD_map > d_thd) = 1;
+%         target_map(i, :, :) = detect_map;
+        [r, c] = find(detect_map);
+        temp_node = [r, c];
+        target_list_RD = [target_list_RD; temp_node];
+    end
+    target_list_RD_new = unique(target_list_RD, 'rows');
+    
+    % estimate target angle interval
+    target_list_angle = [];
+    for i = 1: size(target_list_RD_new, 1)
+        tgt = target_list_RD_new(i, :);
+        stat_vct = stat_RD(:, tgt(1), tgt(2));
+        [v, idx] = max(stat_vct);
+        target_map(tgt(1), tgt(2)) = idx;
+        target_list_angle = [target_list_angle; idx];
+    end
+    target_list_RDA = [target_list_RD_new, target_list_angle];
+    
+end