function parametres_estim = max_vraisemblance_2(D_app,parametres_test,sigma)
    n = length(parametres_test);
    result_r = zeros(1, n);
    for i = 1:n
        result_r(i) = sum(log(0.5/sigma * exp(-calcul_r(D_app,parametres_test(i,1,:)).^2/(2*sigma^2)) + 0.5/sigma * exp(-calcul_r(D_app,parametres_test(i,2,:)).^2/(2*sigma^2))));
    end
    [~,index] = max(result_r);
    parametres_estim = parametres_test(index,:,:);
end