Figure 3.

The point cloud corresponding to $\left[C/\left(\sqrt{1+{\alpha }^2}\right),{\theta }_{\mathrm{R}}-{\theta }_0\right]$ pairs for SX2. (a) the point cloud does not experience phase wrapping (ideal case); (b) the point cloud experiences phase wrapping as it extends beyond $2\pi$ (more typical result); (c,d) show the point clouds of (a,b) together with a copy shifted by $2\pi$.