| 重力场对惯性导航定位误差影响研究与仿真 |
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| 引用本文： | 吴太旗,边少锋,蒋勃,陈勇. 重力场对惯性导航定位误差影响研究与仿真[J]. 测绘科学技术学报, 2006, 23(5): 341-344 |
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| 作者姓名： | 吴太旗 边少锋 蒋勃 陈勇 |
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| 作者单位： | 海军工程大学,湖北,武汉,430033;海军海洋测绘研究所,天津,300061;海军工程大学,湖北,武汉,430033;61365部队,天津,300140 |
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| 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.
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| 关 键 词： | 惯性系统 重力场 仿真 导航 |
| 文章编号： | 1673-6338（2006）05-0341-04 |
| 收稿时间： | 2006-03-11 |
| 修稿时间： | 2006-05-13 |
The Influence of Gravity Field on INS Positioning Error and its Simulation |
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| WU Tai-qi,BIAN Shao-feng,JIANG Bo,CHEN Yong. The Influence of Gravity Field on INS Positioning Error and its Simulation[J]. Journal of Zhengzhou Institute of Surveying and Mapping, 2006, 23(5): 341-344 |
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| Authors: | WU Tai-qi BIAN Shao-feng JIANG Bo CHEN Yong |
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| Affiliation: | 1. Naval University of Engineering, Wuhan 430033, China; 2. Naval Institute of Hydrographic Surveying and Charting, Tianjin 300061, China; 3. 61365 Troops, Tianjin 300140, China |
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| Abstract: | 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. |
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| Keywords: | INS gravity field simulation navigation |
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