Add Example

0 - example/wzk - RDA/range_process_MF.m

@@ -0,0 +1,36 @@
+function [ echo_r_mtx, sigma_n_o ] = range_process_MF(echo_mtx, A, sigma_n)
+% Range processing for echo data using matching filter
+%
+% Usage: 
+% [echo_r_mtx, sigma_n_o] = range_process_MF(echo_mtx, A, sigma_n)
+%
+% Inputs:
+%   echo_mtx:     Original echo data
+%   A:            Chirp measurement matrix
+%   sigma_n:      Input noise standard deviation
+%
+% Outputs:
+%   echo_r_mtx:   Range processing echo data
+%   sigma_n_o:    Output noise standard deviation
+
+
+    % parameters
+    multiple_r = A(:, 1)' * A(:, 1);
+    [M, N] = size(A);
+    [lenA, M, lenP] = size(echo_mtx);
+    
+    % matched filtering
+    echo_r_mtx = zeros(lenA, N, lenP);
+    for numA = 1: lenA
+        for numP = 1: lenP
+            sr = echo_mtx(numA, :, numP);
+            mf_res = A' * transpose(sr);
+            mf_norm = mf_res ./ multiple_r;
+            echo_r_mtx(numA, :, numP) = mf_norm;
+        end
+    end
+    
+    % calculate output noise
+    sigma_n_o = sqrt(sigma_n^2 / multiple_r);
+    
+end