嵌入式大气数据传感系统中的组合滤波技术

嵌入式大气数据传感系统（FADS）与惯性导航系统（INS）组合测量迎角、侧滑角在飞行器平稳飞行时，均可获得很高的测量精度；但该系统在大迎角、高迎角变化率的机动飞行中，由于受到阵风、大气紊流以及噪声的影响较大，使得系统的测量精度下降，不能满足要求。针对这一问题，提出了利用互补滤波器分别对FADS和INS的测量信号进行处理，再利用FADS—INS的组合方案对高机动飞行状态下的迎角、侧滑角进行测量。理论分析和仿真结果表明：该组合滤波技术不但能够提高飞行器在乎稳飞行时的测量精度，而且，使飞行器在高机动飞行时的测量精度大大提高。

Combination filter technology in flush air data sensing system

Compared with conventional air data sensing system,FADS-INS has greater advantages in measuring accuracy when the aircraft flights in steady-state flight condition.But due to the cross-wind,atmospheric disturbance and a greater impact on noise,the system will make the decline in accuracy in high angle-of-attack and high rate of change of angle of attack flight condition,it can't meet the requirement.In response to this problem,the use of complementary filters to process signals of FADS and INS system separa...