北京航空航天大学学报 ›› 2011, Vol. 37 ›› Issue (2): 220-222.

• 论文 • 上一篇    下一篇

基于空中对准过程的在线标定及优化设计

张小跃, 杨功流, 张春熹   

  1. 北京航空航天大学 仪器科学与光电工程学院, 北京 100191
  • 收稿日期:2009-12-03 出版日期:2011-02-28 发布日期:2011-03-05
  • 作者简介:张小跃(1982-),男,湖南益阳人,讲师,zhangxiaoyue@buaa.edu.cn.
  • 基金资助:

    航空科学基金资助项目(2007ZC51040)

Online calibration based on in-flight alignment and optimal design

Zhang Xiaoyue, Yang Gongliu, Zhang Chunxi   

  1. School of Instrument Science and Opto_electronic Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2009-12-03 Online:2011-02-28 Published:2011-03-05

摘要: 光纤陀螺惯组输出误差影响武器系统导航精度,为了弥补地面标定的不足,利用机载制导武器发射前空中对准过程进行光纤捷联系统在线标定.介绍了光纤捷联系统空中对准/在线标定系统模型,基于此设计卡尔曼滤波器;针对某机载航空制导炸弹工作过程进行了对准过程中误差激发与对导航精度影响的仿真分析,并基于此进行了滤波器优化设计;最后进行了优化设计前后导航精度仿真比较,仿真结果显示:完成空中对准/在线标定优化设计后,光纤捷联系统纯惯性导航精度得到提高.

Abstract: The navigation system precision was influenced by the output error of fiber optic gyro(FOG) inertial measurement unit(IMU). In order to complement ground calibration, FOG strapdown inertial navigation system(SINS) online calibration was carried out in airborne guidance weapon in-flight alignment process. In-flight alignment/online calibration model of FOG-SINS was introduced, based on which the Kalman filter was designed. Simulation analysis of error excitation and influence on navigation precision were carried out, and filter optimal design was completed. At last, the simulation results with or without optimal design were obtained which indicated that: FOG-SINS free inertial navigation precision was improved after optimal design.

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