%%
clc;
clear;

config_parameters;

target_num = 2;
range = [250, 140];
velocity = [3e2, 15];

global C_n f_n;
C_n = zeros(target_num, len);
f_n = zeros(target_num, len);

for n_idx = 1:target_num

    for t_idx = 1:len
        C_n(n_idx, t_idx) = floor(rand * (M - 1));
        f_n(n_idx, t_idx) = f_c + C_n(n_idx, t_idx) * Delta_f;
    end

end

T_x = zeros(target_num, len);
R_x = zeros(target_num, len);
R_d = zeros(target_num, len);

for n_idx = 1:target_num

    for t_idx = 1:len
        t = range_t(t_idx);
        T_x(n_idx, t_idx) = T_x_func(t);
        R_x(n_idx, t_idx) = R_x_func(t, range(n_idx), velocity(n_idx));
        R_d(n_idx, t_idx) = R_d_func(t, range(n_idx), velocity(n_idx));
    end

end

%%

r = zeros(1, target_num);
range_idx = zeros(1, target_num);
doppler = zeros(1, target_num);

for n_idx = 1:target_num

    [r(n_idx), range_idx(n_idx)] = get_range(T_x(n_idx, :), R_x(n_idx, :));
    doppler(n_idx) = get_doppler(T_x(n_idx, :), R_d(n_idx, :));

end