sighting point meaning in English

观测点
瞄准点
视准点
照准点

For the characteristic of low frequency movement of the target and high frequency system line - of - sight jitter , basic theory of compound axes line - of - sight stabilization system with line - of - sight pointing reference unit ( lospru ) is analyzed
依据目标低频运动和仪器视轴高频抖动的特点,分析了使用视轴瞄准参考器的复合轴视轴稳定系统的基本原理。