摘要
从惯性导航力学编排方程出发,将高阶重力场模型代替正常重力模型,分析了扰动重力引起的惯性导航误差;并从另一角度,对理想状态下扰动重力对惯性导航的影响进行了仿真分析,结果表明扰动重力影响显著。通过将重力垂线偏差分量引入惯性导航方程,改善传统方程的缺陷,探讨了垂线偏差对惯性导航的影响。在全面论述了扰动重力和重力垂线偏差对惯性导航的影响的基础上,结合实际情况提出了进行重力场误差补偿的两种方法。
High order gravity field model is used to substitute the normal gravity model in the INS arrange equations, and the influence of the gravity disturbance on the INS is studied. On the other hand, the disturbing gravity influencing on the INS in the perfect state is simulated. The results show that the disturbing gravity effect is obvious. Then the influence of vertical deflection on INS is discussed by taking the gravity vertical deflection components into the INS equation. After roundly discussing the influence of disturbing gravity and gravity vertical deflection on INS and considering the real situation, two gravity error compensation methods are put forward.
出处
《测绘科学技术学报》
北大核心
2006年第5期341-344,共4页
Journal of Geomatics Science and Technology
基金
国家杰出青年科学基金资助项目(40125013)
关键词
惯性系统
重力场
仿真
导航
INS
gravity field
simulation
navigation
