捷联惯导系统动基座传递对准匹配方法

摘要

在进行传递对准时，主、子惯导系统之间的安装距离、载体的弹性变形对子惯导系统的对准精度都将产生很大的影响。对影响传递对准性能的杆臂效应和挠曲变形进行了分析和建模，并建立了速度匹配、比力匹配、角速度匹配、姿态角匹配、“速度＋角速度”匹配以及“速度＋姿态角”匹配方法的量测方程。仿真结果表明“速度＋姿态角”匹配方法性能比较优越，能够在很短的时间内估计出主、子惯导之间的安装误差角及挠曲变形角。%In the transfer alignment , the alignment accuracy of slave SINS ( Strapdown Inertial Navi-gation System ) is greatly affected by the distance between the master SINS and slave SINS and dynamic bending of the body .The lever arm effect and flexure deformation , which influence the performance of transfer alignment , are analyzed and modeled .In addition , the measurement equations of velocity match method, specific force match method , angular velocity match method , attitude angle match method ,“ve-locity-plus-angular velocity” match method and “velocity-plus-attitude angle” match method of transfer a-lignment are established .The simulation results show that the performance of “velocity-plus-attitude an-gle” match method is better than that of others , and “velocity-plus-attitude angle” match method could estimate the static misalignment angle and the instantaneous dynamic bending angle between the master SINS and the slave SINS in short time .