For the case of planar interception, the so called relative heading error angle between the relative velocity vector and the LoS (Line of Sight) is chosen as the output to be controlled to zero.

针对平面拦截问题，选择导弹和目标之间的相对速度矢量与导弹-目标视线之间的夹角（称为相对航向误差角）作为将要被控制到零的输出。

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Arbitrary Angle of sight line rotation is measured and Angle measurement is stopped at any time to start shooting by using the device.

该装置可测出瞄准线转动的任意角度，能随时停止测角进行射击。

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Based on the analysis of present methods for atmospheric refraction correction, a new correction model is put forward based on the refraction Angle of the line of sight.

本文在分析现有水准折光改正方法的基础上，导出了一种基于水准视线折光角的改正模型。

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