捷联惯性/天文组合导航信息融合方法研究

为了提高弹道导弹捷联惯性/天文组合导航系统的精度及其在实际工作环境下的自适应性,本文对导航元器件误差进行深入分析,提出了一种基于自适应卡尔曼滤波的状态转移矩阵算法。该方法将简化的Sage-Husa自适应卡尔曼滤波算法与状态转移矩阵校正方法相结合,通过自适应滤波方法来补偿由于复杂工作环境而引入的元器件误差,并利用状态转移矩阵法校正主动段积累的速度、位置误差。通过实际弹道数据的仿真分析表明,新算法能够适应实际工作环境中元器件误差的时变特点,增强了系统对工作环境的适应能力,提高了导弹的导航精度。

Study on Information Fusion Method of Strapdown Inertial/Celestial Integrated Navigation System

In order to enhance the precision and adaptability of strapdown inertial/celestial navigation system for ballistic missile in actual working condition,this paper analyzes the element error and proposes a new method of transmission matrix based on adaptive Kalman filter.The simplified Sage-Husa adaptive filtering method and the transmission matrix method are synthesized.Adaptive filtering method is used to compensate the element error which is induced by the complex working environment,and transmission matri...