机载武器传递对准时,机翼挠曲变形等因素都会对子惯导的对准精度产生影响。针对空基导弹捷联惯导系统动基座传递对准的工程需要,重点考虑机翼挠曲变形带来的对准误差影响,采用“速度+姿态”的匹配方案设计了降维传递对准滤波器,并对其进行了仿真验证及计算复杂度分析。仿真结果表明,设计的17维设计快速传递对准滤波在4~6s內已收敛到亚毫弧度级,在保证对准性能的同时明显减小系统的计算复杂度。

In transfer alignment of airborne weapon, wing's flexure deformation has a significant impact on the alignment accuracy of slave SINS. Based on the analysis of alignment errors caused by the flexure deformation, an alignment filter with lower dimensionality, which employed “velocity + attitude" match scheme, was designed so as to meet the engineering requirement in the stage of the transfer alignment. In addition, the computational complexity was analyzed to evaluate the efficiency of transfer alignment filter. According to the alignment simulation, the results show that the proposed 17-dimensional Kalman filter can converge in 4~6s and deduce the computational complexity significantly.