提高SINS初始对准方位失准角估计精度的方法  

Novel technology for improving estimation accuracy of the azimuth misalignment angle in SINS initial alignment

作　　者：张传斌[1] 田蔚风[1] 邓正隆[2] 

机构地区：[1]上海交通大学仪器工程系,上海200030 [2]哈尔滨工业大学控制科学与工程系,黑龙江哈尔滨150001

出　　处：《系统工程与电子技术》2004年第10期1457-1459,共3页Systems Engineering and Electronics

摘　　要：针对在静基座捷联惯导系统初始对准中,东向陀螺漂移没有估计效果,使得估计的方位失准角存在常值误差的问题,提出了一种新的方法。该方法通过建立东向陀螺漂移估计值的修正方程,并对其进行修正,从而大大提高了方位失准角的估计精度。给出了该方法的具体实现步骤,并通过仿真验证了该方法的有效性。As the east gyro drift can not be estimated in the proces of initial alignment for a strapdown inertia navigation system (SINS) on a stationary base, there exists a constant error on the azimuth misalignment angle. To solve the problem above, a novel method is proposed. The updating equation of the east gyro drift estimated value is easablished, and the estimation accuracy of the azimuth misalignment angle is improved greatly through adjusting the estimated value of the east gyro drift according to the updating equation. The implementation of the method is given in detail, and simulation results show that the method is efficient.

关 键 词：捷联惯导系统 初始对准 卡尔曼滤波 状态估计 

分 类 号：TN966[电子电信—信号与信息处理]