A波长-频率
$\begin{aligned} & \lambda=\frac{\nu}{f}(\mathfrak{m}) \end{aligned}$
B波束效率
$\begin{aligned} & \varepsilon_M=\frac{\Omega_A}{\Omega_M} \end{aligned}$
C有效口径与波束范围
$A_{e}=\lambda^{2}\Omega_{A}(\mathrm{m}^{2})$
D近场区-远场区界面
$R=\frac{2L^2}{\lambda}(m)$