导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2013年
5期
41-43
,共3页
郭铃%吴训忠%金毅%宋吉磊
郭鈴%吳訓忠%金毅%宋吉磊
곽령%오훈충%금의%송길뢰
光纤陀螺%随机漂移%GM(1,1)%AR模型
光纖陀螺%隨機漂移%GM(1,1)%AR模型
광섬타라%수궤표이%GM(1,1)%AR모형
FOG%Random drift%GM (1,1)%AR model
针对差分法在陀螺随机漂移建模中的缺陷，提出将GM(1,1)模型与AR模型相结合的非平稳序列建模方法，将光纤陀螺随机漂移分为确定性的趋势项部分和平稳序列部分，并引入GM(1,1)模型用于提取趋势项，通过AR模型对平稳序列建模，最终实现光纤陀螺随机漂移的非平稳时序建模。分析表明，该模型拟合精度较高，是光纤陀螺随机漂移建模的一种有效方法。
針對差分法在陀螺隨機漂移建模中的缺陷，提齣將GM(1,1)模型與AR模型相結閤的非平穩序列建模方法，將光纖陀螺隨機漂移分為確定性的趨勢項部分和平穩序列部分，併引入GM(1,1)模型用于提取趨勢項，通過AR模型對平穩序列建模，最終實現光纖陀螺隨機漂移的非平穩時序建模。分析錶明，該模型擬閤精度較高，是光纖陀螺隨機漂移建模的一種有效方法。
침대차분법재타라수궤표이건모중적결함，제출장GM(1,1)모형여AR모형상결합적비평은서렬건모방법，장광섬타라수궤표이분위학정성적추세항부분화평은서렬부분，병인입GM(1,1)모형용우제취추세항，통과AR모형대평은서렬건모，최종실현광섬타라수궤표이적비평은시서건모。분석표명，해모형의합정도교고，시광섬타라수궤표이건모적일충유효방법。
According to the bug of the difference method applying in the modeling of the gyro’s random drift, this paper introduced a non-stationary time series modeling method combining the AR model with the GM(1,1) model, which divided the random drift of the Fiber Optic Gyroscope (FOG) into two parts, the certain trend term and the stationary time series, then distilled the trend term through the GM(1,1) model, and established the AR model of the stationary sequence, and finally got the non-stationary time series model of the FOG’s random drift. It suggests that the model has a high simulate precision and can be an efficient way for the modeling of the FOG’s random drift.
