高精度惯导系统重力扰动的阻尼抑制方法
发布时间：2019-06-24 09:27
【摘要】：重力扰动已经成为高精度长航时惯导系统的主要误差源之一。针对船用高精度惯导系统的重力扰动抑制问题,从舰船INS误差模型出发,推导了重力扰动在惯导系统中的传播特性。仿真结果表明垂线偏差将引起系统较大的舒拉振荡误差。为抑制重力扰动对系统的影响,引入常速度误差反馈阻尼网络和相位超前串联阻尼网络。分析了重力扰动在水平阻尼网络中的传递特性,实现了相应滤波器的设计。在此基础上完成了实验验证,海上试验结果表明,所引入的两种阻尼网络都能够阻尼掉重力扰动引起的舒拉振荡型导航误差,其中,相位超前串联阻尼网络效果更优,抑制率达到70%以上。
[Abstract]:Gravity disturbance has become one of the main error sources of high precision long voyage inertial navigation system. In order to solve the problem of gravity disturbance suppression in marine high precision inertial navigation system, the propagation characteristics of gravity disturbance in inertial navigation system are derived from the ship INS error model. The simulation results show that the vertical deviation will cause a large Shura oscillation error of the system. In order to suppress the influence of gravity disturbance on the system, constant velocity error feedback damping network and phase advance series damping network are introduced. The transfer characteristics of gravity disturbance in horizontal damping network are analyzed, and the corresponding filter design is realized. On this basis, the experimental results show that the two damping networks can dampen the Schulerian oscillatory navigation error caused by gravity disturbance, among which the phase advance series damping network is more effective, and the suppression rate is more than 70%.
【作者单位】： 天津航海仪器研究所;
【基金】：国家安全重大基础研究资助项目(613219)
【分类号】：TN96
，
本文编号：2504947
[Abstract]:Gravity disturbance has become one of the main error sources of high precision long voyage inertial navigation system. In order to solve the problem of gravity disturbance suppression in marine high precision inertial navigation system, the propagation characteristics of gravity disturbance in inertial navigation system are derived from the ship INS error model. The simulation results show that the vertical deviation will cause a large Shura oscillation error of the system. In order to suppress the influence of gravity disturbance on the system, constant velocity error feedback damping network and phase advance series damping network are introduced. The transfer characteristics of gravity disturbance in horizontal damping network are analyzed, and the corresponding filter design is realized. On this basis, the experimental results show that the two damping networks can dampen the Schulerian oscillatory navigation error caused by gravity disturbance, among which the phase advance series damping network is more effective, and the suppression rate is more than 70%.
【作者单位】： 天津航海仪器研究所;
【基金】：国家安全重大基础研究资助项目(613219)
【分类号】：TN96
，
本文编号：2504947
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