H^∞滤波在无源北斗／SINS组合导航系统中的应用

无源北斗接收机输出有色噪声大，数据跳变点多，噪声分析和建模工作困难。而传统的卡尔曼滤波存在不确定的滤波统计参数，滤波稳定性不高，提出将H^∞滤波用到无源北斗／SINS组合导航系统中。H^∞滤波追求噪声干扰对可控输出的影响最小，即强调系统的鲁棒性，而且不需要建立精确的数学模型，也不需要精确知道系统的统计特性，滤波参数设置简单。通过仿真实验验证，在相同滤波误差模型下，其滤波算法稳定性高于卡尔曼滤波的稳定性。

Application of H∞ Filtering in Passive BD/SINS Integrity Navigation System

The passive BD receiver has large output of colored noise and the date is chacacterd of jumping point, the noise analysis and model building are complexity. But the national kalman lihering is confined uncertain statistical parameters and the low stability, H^∞ lihering is put forward to the passive BD/SINS navigation system. The new filtering emphasize the smallest effect of noise interference to the controllable output, so the robustness is in the first place, while the precision model and statistical character is not necessary, and fewer parameters is also its strongpoint. Simulation results show that with the same error model, the stability of H^∞ lihering algorithm is higher than that of kalman lihering.