速度与角速度双积分匹配传递对准

Transfer alignment of velocity and double integration of angular rate matching

为降低载体挠曲变形对传递对准的影响,提出了"速度+角速度双积分"匹配方法。与姿态匹配相比,角速度双积分匹配对载体挠曲变形不敏感。结合速度匹配,"速度+角速度双积分"匹配可减小挠曲变形引起的传递对准误差。参照挂飞试验测得的机翼挠曲变形数据,进行了传递对准的Monte Carlo仿真。仿真结果表明:采用"速度+角速度双积分"匹配方式相比采用传统的"速度+姿态"匹配,最大姿态估计误差减小超过30%,陀螺和加速度计的零偏估计误差也有不同程度的减小。车载实验验证了这种方法的有效性。

The effects of carrier flexure deformation on transfer alignment were reduced using a developed ＂velocity ＋ double-integration of angular rate＂（VDAR） matching method.Compared with the attitude matching method,the double-integration of angular rate matching method is insensitive to carrier flexure deformation,with the VDAR matching method,combined with the velocity matching method,reducing the transfer alignment errors caused by flexure deformation.Monte Carlo simulations of transfer alignment based on the wing flexure data measured in a flight test show that the maximum attitude estimate error obtained by using the VDAR matching is reduced by more than 30% with the gyro and accelerometer bias estimate errors also decreased,compared with using the traditional ＂velocity ＋ attitude＂ matching.A vehicle test validates the developed method efficiency.