When the Angle of the probe beam is near Brewster Angle the reflectivity can reach up to 60%.

当物光近于布儒斯特角入射时，反射率可达60%。

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For large probe beam divergence the SNR is relatively poor, and even a streaky signal process is predicted if a point target is scanned across.

系统发射的探测光束发散角较大时，信噪比较差，且光束扫过点目标可能出现条纹状信号过程。

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This required widening the antenna's beam to catch the probe in its uncertain orbit.

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