The full fisheye frame shows everything above the horizon, including a lamp-illuminated landscape around the edges, and the zenith of the sky directly overhead.
全帧鱼眼镜头拍到了地平线上所有东西，包括边缘一圈被灯光照亮的地景，正在脑袋上方的天顶。
Along with the increase of the zenith Angle and height above ground of an optical transmitter, the extent of the time-averaging effect decreases.
随着接收终端离地高度和天顶角的增大，大气闪烁时间平滑作用降低。
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