一种基于实时物理闭环校正的空中动基座对准方法

An In-flight Moving Alignment Method Based on the Real Time Physical Closed-loop Correction

提出了一种基于实时物理闭环校正的平台惯导空中动基座对准方法。该方法利用卡尔曼滤波实现惯导误差的实时估计,根据最优二次型准则设计反馈控制进行惯导平台的实时闭环物理校正,有效保证了对准精度。经机载试验,平台惯导空中动基座对准后,导航精度大幅提高。

In this paper, an in-flight moving alignment method which is based on the real time physical closed-loop correction, applying to the platform INS is put forward. In this method, the real time estimation of inertial navigation error is realized by using Kalman filter, and a feedback control is designed according to the optimal quadratic criterion to do the real time physical closed-loop correction for the platform of INS, which effectively guarantees the alignment precision. The navigation precision can be improved after in-flight moving alignment, verifying by airborne flight experiments.