抗角晃动与线运动耦合干扰的捷联惯导自对准算法  

SINS Anti-Interrupt Self-Alignment Algorithm for Angular Swaying and Linear Motion Coupling Interference

作　　者：杨波 王跃钢[1] 杨家胜 郭志斌[1] 

机构地区：[1]第二炮兵工程大学自动控制系,西安710025

出　　处：《传感技术学报》2015年第4期526-530,共5页Chinese Journal of Sensors and Actuators

基　　金：武器装备预研项目(EP111015)

摘　　要：捷联惯导系统在实际对准过程中,由于受到角晃动干扰与线运动干扰的耦合作用,难以快速高精度地完成自对准,针对该问题提出了一种抗角晃动与线运动耦合干扰的自对准算法。该算法将自对准问题转化为Wahba姿态求解问题,以消除角晃动干扰的影响;利用惯性系下的重力矢量信号的时域特性,采用时域信号处理方法来实现消除线运动干扰。仿真结果表明,该算法在角晃动干扰与线运动耦合干扰的作用下能够快速地实现自对准。For the angular swaying and linear motion coupling interference,the strapdown inertial navigation system（ SINS） is difficult to achieve alignment rapidly and accurately. In order to solve this problem,an anti-interrupt self-alignment algorithm for angle swaying motion and linear motion coupling interference is presented. In this algorithm,the alignment problem is transformed into the Wahba problem to remove the angular swaying interference,and timedomain signal processing methods are used to remove the linear motion interrupt according to the time-domain characteristics of the gravity vector signal in inertial reference frame. The simulation results show that,the presented method can accomplish alignment quickly in the presence of the angular swaying and linear motion coupling interference.

关 键 词：捷联惯导系统 抗干扰自对准 Wahba问题 时域信号处理 角晃动 线运动 耦合干扰 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]