NU = np.zeros(int((T - t0) / h) + 1)
    L = np.zeros(int((T - t0) / h) + 1)
    D = np.zeros(int((T - t0) / h) + 1)
    R = np.zeros(int((T - t0) / h) + 1)
    Xtg = np.zeros((int((T - t0) / h) + 1,2))
    U = np.zeros(int((T - t0) / h) + 1)

    i = 0
    for s in np.arange(t0, 1 + 1e-10,h / T):
        Xtg[i] = target.Xp(s)
        x = [x_plot[i], y_plot[i]]
        NU[i] = target.nu(s, x)
        D[i] = target.d(s, x)
        L[i] = channel.l(x)
        R[i] = channel.r(x)
        U[i] = uav.u(s, x)
        i = i + 1

 
    ax1.scatter(Xbs[0],Xbs[1], marker = 'v', color = 'blue')
    ax1.plot(Xtg[:,0],Xtg[:,1], marker = 'x', color = 'red')
    ax1.scatter(XT[0],XT[1], marker = 'x', color = 'green')
    ax1.plot(X[:,0],X[:,1], color = 'blue', linewidth = 2.0, alpha = 0.3)
    ax1.plot(x_plot, y_plot, color = 'red')
    ax1.set_aspect('equal')

    ax2.plot(t, NU, color = 'blue', label = 'surv quality')
    ax2.plot(t, L, color = 'green', label = 'transfer quality')
    ax2.legend()