在弹道末端，由于弹道降与弹丸散布的存在，用雷达和天幕靶测速装置测试弹丸飞行速度误差很大。
For the fall of trajectory and the scatter of projectiles, there is larger error between the true value and the measured data by radar or Sky Screens.
该导引律能同时满足脱靶量要求和末端落角要求，保证了大空域变轨弹道的各段弹道平滑衔接。
This guidance law can satisfy the requirements of miss distance and terminal Angle, thus it guarantees that all phases of the large-space variable trajectory smoothly link.
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