旋转弹体表面红外辐射干扰补偿模型

发布时间：2018-05-27 16:39

本文选题：旋转弹体 + 弹体红外辐射　；参考：《中国惯性技术学报》2017年04期

【摘要】：针对地球红外辐射姿态测试方法中弹体表面红外辐射干扰较大的问题,建立旋转弹体自身红外辐射补偿模型,从而提高弹体姿态测量精度。首先,采用瞬态热平衡微分方程推导出旋转弹体表面温度变化曲线,获取弹体自身红外辐射亮度。然后,根据地球红外辐射及其在大气中的传播规律,建立了弹体自身红外辐射补偿数学模型。最终结合红外传感器输出和所推导的补偿模型,估算红外辐射补偿参数。结果表明补偿后姿态角解算误差显著降低,俯仰角和横滚角解算误差最终分别保持在±0.2°和±0.4°以内。本方法对姿态测量误差的减小具有显著效果,补偿方法简单有效,对旋转弹体的红外姿态测试技术的研究具有借鉴意义。
[Abstract]:The infrared radiation compensation model of rotating projectile is established to improve the precision of attitude measurement in view of the large interference of infrared radiation on the surface of the missile in the method of measuring the attitude of the earth's infrared radiation. Firstly, the surface temperature change curve of rotating projectile is derived by transient heat balance differential equation, and the infrared radiance of the projectile itself is obtained. Then, according to the infrared radiation of the earth and its propagation in the atmosphere, the mathematical model of the infrared radiation compensation of the projectile itself is established. Finally, the infrared radiation compensation parameters are estimated by combining the output of infrared sensor and the compensation model derived. The results show that the error of attitude angle calculation is significantly reduced after compensation, and the errors of pitch angle and roll angle are kept within 卤0.2 掳and 卤0.4 掳respectively. This method has remarkable effect on reducing the error of attitude measurement and is simple and effective. It is useful for the research of infrared attitude measurement technology of rotating projectile.
【作者单位】：南京理工大学机械工程学院;
【基金】：国家自然科学基金项目(61675097)
【分类号】：TJ410;TN219

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