Figure 9

The behavior of{\mathit{G}}_{\mathit{R}}\mathbf{\left(}\mathit{\theta }\mathbf{\right)}\mathbf{,}{\mathit{N}}_{\mathit{t}}^{\mathit{m}}\mathbf{=}{\mathit{N}}_{\mathit{t}}^{\mathit{r}}\mathbf{=}\mathbf{4}. (A) D_{m _r} = 150 m. (B) D_{m _r} = 200 m.