一种新的强跟踪H_∞滤波方法研究及应用

The Research and Application of a New Strong Tracking Filter Method Based on H_∞

针对常规H∞滤波跟踪机动过程能力较弱的问题,提出了一种新的强跟踪H∞滤波算法,该滤波算法具有较好的姿态跟踪能力,并保持了H∞滤波模型简单、鲁棒性好的优点。文中通过研究基于强跟踪H∞滤波方法的GPS/INS对准,实现空中机动条件下的惯导系统初始对准。对该算法进行仿真验证,测试结果表明,采用基于H∞的强跟踪滤波可以较好地提高对准过程的平稳性和精度,具有重要的工程应用参考价值。

The conventional H∞ filter has low power to track the maneuver. Regarding solving this problem, a strong tracking filter based on H∞ is proposed. This filtering algorithm has better attitude tracking performance with simple error model and good robustness. By taking the advantage of strong tracking filter based on H∞, the GPS/INS integrated navigation system alignment is researched and the INS initial align-ment with moving base is realized. The simulation results show that the strong tracking filter based on H∞ can greatly improve the smoothness and precision and has important reference value in engineering applications.