考虑星敏感器安装误差的弹道导弹捷联星光/惯性复合制导

doi:10.7257/S1000-6893.2019.23603

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考虑星敏感器安装误差的弹道导弹捷联星光/惯性复合制导

赵依, 张洪波, 汤国建

国防科技大学空天科学学院, 长沙 410073

收稿日期:2019-10-22 修回日期:2019-11-27 出版日期:2020-08-15 发布日期:2020-08-26
通讯作者: 张洪波 E-mail:zhanghb1304@nudt.edu.cn

Strapdown stellar-inertial composite guidance method for ballistic missiles considering star sensor installation errors

ZHAO Yi, ZHANG Hongbo, TANG Guojian

College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China

Received:2019-10-22 Revised:2019-11-27 Online:2020-08-15 Published:2020-08-26

摘要/Abstract

摘要： 弹道导弹捷联星光/惯性制导是在惯性制导基础上辅以星光修正的一种复合制导方法，能够显著提高导弹制导精度。由于星敏感器捷联安装在弹体上，安装误差会影响恒星测量的精度，进而影响复合制导精度，为此提出一种在线辨识并修正星敏感器安装误差的复合制导方法。建立了星敏感器观测量与数学平台失准角、星敏感器安装误差的关系方程，在导弹主动段关机后测量3颗独立的恒星获得6个观测量，利用最小二乘法估计出失准角和星敏感器安装、误差。改进了星光/惯性复合制导的最佳修正系数确定方程，直接修正了星敏感器安装误差的影响。数值仿真结果表明：所提方法可以有效地估计平台失准角和星敏感器安装误差，提高了捷联星光/惯性复合制导的精度。

关键词: 星敏感器安装误差, 平台失准角, 在线辨识, 捷联星光/惯性复合制导, 最佳修正系数

Abstract: Strapdown stellar-inertial guidance of ballistic missiles is a composite guidance method based on inertial guidance supplemented by starlight correction. It can significantly improve the guidance accuracy of missiles. However, since the star sensor is strapdown mounted on the missile body, installation errors will inevitably affect the accuracy of stellar measurement and the precision of composite guidance. Therefore, a composite guidance method for on-line identification and correction of the star sensor installation errors is proposed. The relationship among the observations of the star sensor, the platform misalignment angle, and the star sensor installation error is established. After the active segment of the missile is shut down, six observations are obtained by measuring three independent stars. The misalignment angle and the star sensor installation error can be estimated by the least square method. The optimal correction factor determination equation of the stellar-inertial composite guidance is improved, and the influence of the star sensor installation error is directly eliminated. The simulation results show the effectiveness of the proposed approach in estimating the platform misalignment angle and the star sensor installation error, thus improving the precision of the strapdown stellar-inertial composite guidance.

Key words: star sensor installation errors, platform misalignment angles, online identification, strapdown stellar inertial composite guidance, optimal correction coefficients

中图分类号:

V448

赵依, 张洪波, 汤国建. 考虑星敏感器安装误差的弹道导弹捷联星光/惯性复合制导[J]. 航空学报, 2020, 41(8): 623603-623603.

ZHAO Yi, ZHANG Hongbo, TANG Guojian. Strapdown stellar-inertial composite guidance method for ballistic missiles considering star sensor installation errors[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(8): 623603-623603.

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考虑星敏感器安装误差的弹道导弹捷联星光/惯性复合制导

Strapdown stellar-inertial composite guidance method for ballistic missiles considering star sensor installation errors

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