| 地磁匹配算法研究框架和组合匹配策略 |
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| 引用本文： | 刘颖,吴美平,谢红卫.地磁匹配算法研究框架和组合匹配策略[J].国防科技大学学报,2010,32(6):171-176. |
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| 作者姓名： | 刘颖 吴美平 谢红卫 |
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| 作者单位： | 国防科技大学机电工程与自动化学院; |
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| 摘 要： | 以空中无人平台为背景,研究了地磁辅助惯性导航系统。分析了地磁匹配的特点,给出了一维匹配的概念。从特征空间、相似性度量、搜索空间、搜索策略等四个方面对一维匹配进行了分析,建立了一个地磁匹配方法研究的框架。通过简化惯导解算过程,将一维地磁匹配归结为一个带补偿过程的仿射变换,并提出了一种基于等值线约束的组合匹配算法。该算法兼顾了匹配的全局搜索能力和局部定位能力,能在飞行过程中在线进行。在仿真和车载实验中,对算法的匹配精度、速度、适应性进行了分析和验证,检验了算法的有效性和可行性。
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| 关 键 词： | 地磁辅助导航 优化搜索 等值线约束 组合匹配 |
| 收稿时间： | 5/3/2010 12:00:00 AM |
A Framework for Magnetic Matching Study and an Integrated Matching Method |
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| LIU Ying,WU Meiping and XIE Hongwei.A Framework for Magnetic Matching Study and an Integrated Matching Method[J].Journal of National University of Defense Technology,2010,32(6):171-176. |
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| Authors: | LIU Ying WU Meiping and XIE Hongwei |
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| Institution: | LIU Ying,WU Mei-ping,XIE Hong-wei(College of Mechatronics Engineering and Automation,National Univ.of Defense Technology,Changsha 410073,China) |
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| Abstract: | Geomagnetism aided inertial navigation system for unmanned aerial vehicles was studied.An analysis was presented for the whole magnetic matching process.One-dimension matching concept was first used and analyzed in view of its feature space,similarity metric,search space and search strategy,upon which a framework for matching methods study was built.Through simplification of inertial computational process,one-dimension magnetic matching can be considered as an affine transformation problem with compensation... |
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| Keywords: | geomagnetism aided inertial navigation optimized search process contour constraint integrated matching strategy |
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