基于灰色建模理论的平台漂移数据预处理

为更好利用平稳时间序列建模法对陀螺随机漂移数据建模,该文将灰色建模理论应用到陀螺漂移数据趋势项提取中,分别用GM(1,1)提取幂函数项和用GM(2,1)模型提取周期函数项,建模的结果表明,陀螺漂移数据中含有的幂函数项可忽略,在去除周期函数和线性趋势项后对数据进行正态检验表明,经过预处理的数据符合平稳时间序列的要求,可利用平稳时间序列理论进行建模。

Pretreatment of Platform Drift Data Based on the Grey Modelling Theory

In order to use Smooth time series model method to establish the platform drift model, the grey modelling theory has been applied to exact the gyroscope excursion data tendency. Respectively with GM(1, 1) extracting power function item and with GM(2, 1) model extracting a periodic function, modeling results show that gyroscope excursion data containing a power function can be neglected. After removing periodic function and linear tendency item, the results of normal test on data show that the pretreated data satisfy the requirement of the stationary time series and can be used to establish model by using the smooth time series model theory.