基于伪地球坐标系的捷联惯导全球动基座初始对准算法

发布时间：2018-06-30 01:07

本文选题：极区对准 + 全球初始对准　；参考：《中国惯性技术学报》2017年05期

【摘要】：由捷联惯导系统建模原因造成的导航误差随纬度升高会被急剧放大,是实现惯导系统全球初始对准所面临的主要问题之一,且现有多种编排方案共存的全球初始对准算法也不利于初始对准算法在全球范围内统一。另一方面,极地地区越来越小的地球自转水平分量,使得极点及其附近的静态自对准是无法实现的,且动基座初始对准也有利于提高导航系统的快速反应能力。基于此,提出了采用伪地球坐标系惯导编排来实现惯导系统的全球动基座初始对准,消除由惯导建模造成对全球初始对准性能的影响,并期望探索一种统一导航编排的全球初始对准算法。最后通过仿真证明了该算法的可行性。
[Abstract]:The navigation error caused by the strapdown inertial navigation system modeling will be magnified sharply with the increase of latitude, which is one of the main problems in realizing the global initial alignment of inertial navigation system. Moreover, the existing global initial alignment algorithms, where many scheduling schemes coexist, are not conducive to the global unification of the initial alignment algorithms. On the other hand, the earth rotation horizontal component is becoming smaller and smaller in the polar region, which makes the static self-alignment of the pole and its vicinity impossible, and the initial alignment of the moving base is also helpful to improve the rapid response ability of the navigation system. Based on this, a pseudo earth coordinate system of inertial navigation arrangement is proposed to realize the initial alignment of the global moving base of the inertial navigation system, which eliminates the influence of the modeling of the inertial navigation system on the global initial alignment performance. And it is expected to explore a global initial alignment algorithm for unified navigation arrangement. Finally, the feasibility of the algorithm is proved by simulation.
【作者单位】：哈尔滨工程大学自动化学院;
【基金】：中国国家科学技术部国际科技合作项目(2014DFR10010)
【分类号】：TN96

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