火箭弹载惯导误差分析

在对火箭弹载惯导进行射前标定时考虑的误差主要包括零偏误差、标度因素误差、安装误差。标定的误差参数越多,难度越大,如果能抓住影响弹丸制导精度的主要误差,将可简化标定算法,简化标定过程,提高标定效率。基于这样的思路,将飞行中的弹丸类比为旋转惯导,从误差方程入手,采用提取误差直流分量的方法对飞行中的弹载惯导进行误差分析,得出影响导航精度的主要误差参数,并仿真验证了所得结论的正确性,为后续简化标定方案提供了理论依据。

Rocket Carrier INS Error Analysis

During the calibration of the onboard INS before launch,Error to be considered include Bias,scale factor error,installation error. Error parameters,the greater the difficulty,if you can grasp the major errors that impact the precision-guided projectile,this will simplify the calibration algorithm to simplify the calibration process,improve efficiency calibration. Based on this idea ,in this paper,the flight of the projectile as a rotation INS,starting from the error equation,INS error analysis in flight, using the method of extracting the DC component of the error. The main error parameters that impact of the navigation accuracy is obtained. And simulation results show the correctness of the conclusions. A theoretical basis for the subsequent simplify calibration program is provided.