$\gamma$

$\text{LF}\left(\left|\theta \right|\le \pi /6\right)$

$\text{MF}\left(\pi /3\le \left|\theta \right|\le 5\pi /3\right)$

$\text{HF}\left(\left|\theta \right|\ge 5\pi /6\right)$

算法1

2.4500

1.6482

2.2406