弹丸飞行时间与射击诸元关系分析

为提高火控计算机弹道计算精确度，减小射击误差，提出一种射击诸元与弹丸飞行时间 tf关系的算法分析。通过射击诸元与 tf的灵敏度解析表达式，分析了 tf计算精度在不同航路段对射击诸元影响的大小。利用3条航路进行灵敏度曲线仿真，在不同目标速度下，定量分析了弹丸飞行时间对射击诸元即火炮高低、方位角的影响。仿真结果表明：在航路捷径附近，对1000 m距离上的目标射击误差方位为0.5 m、高低向0.1 m；因此，要减小射击误差，关键之一是提高弹丸飞行时间的计算精度。

Analysis on Relation of Projectile Flight Time and Firing Data

In order to improve the accuracy of fire control computer ballistic calculation and reduce shooting errors, this paper proposes an algorithm to analysis the relationship between firing data projectile and bullet flight time tf. The sensitivity analytical expression about shooting coordinate and tf analyzes the impacts to shooting coordinate in different tf accuracy and different route parameters. By three flying routes with the different target speeds to analyze quantitatively and simulate the sensitivity curves about how tf influences the firing coordinate, namely azimuth and elevation angles. Simulation results show that, in the vicinity of a shortcut route, target shooting azimuth error is 0.5 m, elevation to 0.1 m, when the target distance is more than 1 000 m. Therefore, to reduce the errors of shooting, one of the keys point is to improve the accuracy of the projectile flight time.