基于溫度變化Fourier展開的慣導(dǎo)航向效應(yīng)補償
發(fā)布時間:2019-04-19 09:01
【摘要】:航向效應(yīng)對高精度空間穩(wěn)定平臺式慣性導(dǎo)航系統(tǒng)具有致命的影響。根據(jù)系統(tǒng)變航向?qū)Ш皆囼灁?shù)據(jù),分析了變航向引起溫度及平臺漂移變化的作用機理,討論了平臺漂移變化與溫度變化的相關(guān)性,進而提出基于溫度變化Fourier展開的航向效應(yīng)補償方法。采用滑動最小二乘擬合導(dǎo)航誤差的方法提取平臺常值漂移的變化,并以此為觀測量標(biāo)定平臺漂移的溫度系數(shù)。最后,利用多組變航向試驗數(shù)據(jù)對所述補償方法進行驗證,結(jié)果表明:平臺常值漂移變化與溫度變化基波分量的幅值具有強相關(guān)性,該補償方法可將溫度變化引起的航向效應(yīng)誤差降低40%~90%,具有較強的工程應(yīng)用潛力。
[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.
【作者單位】: 福州大學(xué)物理與信息工程學(xué)院;北京航空航天大學(xué)儀器科學(xué)與光電工程學(xué)院;清華大學(xué)精密儀器系;
【基金】:總裝“十二五”預(yù)研項目(51309030401)
【分類號】:TN96
本文編號:2460806
[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.
【作者單位】: 福州大學(xué)物理與信息工程學(xué)院;北京航空航天大學(xué)儀器科學(xué)與光電工程學(xué)院;清華大學(xué)精密儀器系;
【基金】:總裝“十二五”預(yù)研項目(51309030401)
【分類號】:TN96
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