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针对纬度和方位的地球周期振荡误差降低惯导系统导航定位精度的问题,以实际研制的惯性导航系统为对象,引入三阶方位阻尼网络,采用逐次尝试的方法,设计了多阻尼系数的方位阻尼网络,实现了地球周期振荡误差的阻尼,且能适应于载体的多种机动运动状态;在此基础上采用自动补偿技术减小状态切换过程中的超调误差.通过速度误差计算机比对仿真结果可以看出,全阻尼惯导系统方案能实现地球周期的阻尼,自动补偿技术能实现状态切换的平滑切换.
The earth-cycle oscillation error of latitude and azimuth reduces the navigation and positioning accuracy of INS. The third-order azimuth damping network is introduced to the inertial navigation system which is actually developed, and the azimuth damping with multi-damping coefficient is designed by successive attempts Network to realize the damping of the periodic oscillation error of the earth and to adapt to various maneuvering states of the carrier. On the basis of this, an automatic compensation technique is adopted to reduce the overshoot error in the state switching process. By comparing the simulation results of the speed error computer It can be seen that the fully damped inertial navigation system scheme can achieve the earth’s periodic damping and the automatic compensation technology can realize the smooth switching of state switching.