基于温度变化Fourier展开的惯导航向效应补偿

发布时间：2019-04-19 09:01

【摘要】：航向效应对高精度空间稳定平台式惯性导航系统具有致命的影响。根据系统变航向导航试验数据,分析了变航向引起温度及平台漂移变化的作用机理,讨论了平台漂移变化与温度变化的相关性,进而提出基于温度变化Fourier展开的航向效应补偿方法。采用滑动最小二乘拟合导航误差的方法提取平台常值漂移的变化,并以此为观测量标定平台漂移的温度系数。最后,利用多组变航向试验数据对所述补偿方法进行验证,结果表明:平台常值漂移变化与温度变化基波分量的幅值具有强相关性,该补偿方法可将温度变化引起的航向效应误差降低40%~90%,具有较强的工程应用潜力。
[Abstract]:The heading effect has a fatal effect on the inertial navigation system with high precision spatial stability platform. Based on the experimental data of variable course navigation, the mechanism of temperature and platform drift change caused by changing course is analyzed, and the correlation between platform drift and temperature change is discussed. Furthermore, a heading effect compensation method based on temperature change Fourier expansion is proposed. The moving least squares fitting navigation error method is used to extract the variation of the platform constant drift, which is used to measure the temperature coefficient of the platform drift calibration. Finally, the compensation method is verified by using multi-group variable course test data. The results show that there is a strong correlation between the amplitude of the fundamental component of the platform constant drift and the temperature change. This compensation method can reduce the error of heading effect caused by temperature change by 40% ~ 90%, and has strong engineering application potential.
【作者单位】：福州大学物理与信息工程学院;北京航空航天大学仪器科学与光电工程学院;清华大学精密仪器系;
【基金】：总装“十二五”预研项目(51309030401)
【分类号】：TN96

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