极区格网阻尼导航方法

针对舰艇在极区航行时,其常用惯性导航系统机械编排存在精度下降、无北向基准等问题,设计了适用于极区工作的格网坐标系捷联惯性导航系统机械编排.在构建了格网坐标系参考框架的基础上,建立了格网坐标系捷联惯导系统的机械编排,并分析了其误差传播特性.通过误差分析,确定了格网坐标系捷联惯导系统中存在的周期性振荡,并提出了适用于格网坐标系捷联惯导系统的阻尼技术,有效抑制了周期性振荡.最后,通过仿真实验验证了该系统在极区工作的可行性和阻尼技术的有效性.

A Damping Method for Polar Navigation Based on Grid Mechanization

Common mechanizations for warship inertial navigation system(INS) involve problems of accuracy depressing, lack of north benchmark and so on. Aiming at this problem, a grid strapdown INS mechanization is designed here, which is applicable to polar regions. The navigation reference framework of the grid coordinate system is constructed and mechanization of grid strapdown INS is established. More over, an error analysis for the grid strapdown INS is performed. Through error analysis, periodic oscillating errors existing in that mechanization are determined, and damping technology applicable to that mechanization is proposed to reduce those errors efficiently. Finally, simulation test is performed to validate the feasibility of this system in polar regions, as well as the performance of the damping technology