| 引用本文: | 贾沛然.垂线偏差对弹道导弹命中精度的影响.[J].国防科技大学学报,1983,(1):39-54.[点击复制] |
| Jia Peiran.The Effect of Deflection of the Vertical on Ballistic Missile Impact Accuracy[J].Journal of National University of Defense Technology,1983,(1):39-54[点击复制] |
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| 垂线偏差对弹道导弹命中精度的影响 |
| 贾沛然 |
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| 摘要: |
| 本文讨论垂线偏差对弹道导弹命中精度的影响。 首先，通过导弹主动段飞行中垂线偏差影响的分析，获得关机点条件的摄动。然后，通过对脱靶系数的分析，得出结论：必须用考虑地球旋转的关机点参数来计算脱靶系数。文章导出利用不考虑地球旋转的关机点参数求取考虑地球旋转关机点参数的解析表达式。利用这个解析结果，可以计算在任意发射条件下的关机点参数，而无需去积分微分方程组，用这些关机点参数即可计算脱靶系数。 就本文提供的方法与直接积分弹道方程的计算结果而言，脱靶量的相对误差小于2%，绝对误差约为30米。 最后，本文给出全程制导下计算垂线偏差的脱靶量的表达式，并对惯性制导修正脱靶量的方法进行了讨论。 |
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| 投稿日期：1982-06-15 |
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| The Effect of Deflection of the Vertical on Ballistic Missile Impact Accuracy |
| Jia Peiran |
| Abstract: |
| In this paper，effect of deflection of vertical on ballistic missile impact accuracy is discussed.
By analysing the effect of deflection of vertical in the powered steps of flight the perturbations of the cut-off condition are obtained. On analysing the miss coefficient we arrived at the concIusion that it is necessary to use the cut-off parameters taking in account the earths rotation for computing the miss coefficients. Analytical formulas for obtaining the cut-off parameters taking in account the earth's rotation from those without taking earth's rotation into account are derived. These formulas used to compute the cut-off parameters under any lauch conditions without the integration of the system of differential equations. The cut-off parameters thus obtained can be used to compute the miss coefficients.
In comparison with the results obtained by direct integration of trajectory equations the method described in this paper gives a relation error on miss distance of less than 2% and an absolute error of about 30 meters.
Finally，this paper puts formulas for computing the miss distance due to def1ection of the vertical and methods for correcting the miss distance of inertial guidance are briefly discussed. |
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