| 面向相关匹配算法应用的地磁图适配性分析 |
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| 引用本文： | 杨亚鹏,吴文启,罗诗途,吴美平.面向相关匹配算法应用的地磁图适配性分析[J].导航与控制,2009(2):9-15. |
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| 作者姓名： | 杨亚鹏 吴文启 罗诗途 吴美平 |
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| 作者单位： | 国防科学技术大学机电工程与自动化学院;国防科学技术大学机电工程与自动化学院;国防科学技术大学机电工程与自动化学院;国防科学技术大学机电工程与自动化学院 |
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| 基金项目： | 中国博士后科学基金（编号：20070420186） |
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| 摘 要： | 在研究惯性/地磁组合导航技术的基础上，提出了一种面向相关匹配算法应用的地磁图适配性分析方法。给出了地磁图适配性的定义，并通过分析地磁图的相关曲面特征，建立了地磁图适配性与相关曲面的相关峰尖锐性系数、独立性系数和抗噪声能力系数的定量关系，给出了一种综合评价准则。实验证明，利用这种评价准则判断地磁图适配性得出的结论，与通过相关匹配实验，计算地磁图的配准概率来判断地磁图适配性得出的结论一致，表明这是一种十分有效的判断地磁图适配性的方法。
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| 关 键 词： | 地磁图适配性 相关匹配算法 相关曲面特征 配准特征向量 |
Matching Suitability Analysis of Geomagnetic Map for Application of Correlation Matching Algorithm |
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| YANG Ya-peng,WU Wen-qi,LUO Shi-tu and WU Mei-ping.Matching Suitability Analysis of Geomagnetic Map for Application of Correlation Matching Algorithm[J].Navigation and Control,2009(2):9-15. |
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| Authors: | YANG Ya-peng WU Wen-qi LUO Shi-tu and WU Mei-ping |
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| Institution: | College of Mechatronics Engineering and Automation, National University of Defense Technology;College of Mechatronics Engineering and Automation, National University of Defense Technology;College of Mechatronics Engineering and Automation, National University of Defense Technology;College of Mechatronics Engineering and Automation, National University of Defense Technology |
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| Abstract: | A method to analyze the matching suitability of geomagnetic map for application of correlation matching algorithm is proposed based on the investigation of Inertial/Geomagnetic navigation technology. The definition of the matching suitability of geomagnetic map is given and by analyzing the correlation surface feature of geomagnetic map, the quantitative relationship among the matching suitability of geomagnetic map, the acuity coefficient of the correlation peak, the uniqueness coefficient of the correlation peak and the coefficient of antinoise capability is established. Based on this, a comprehensive evaluation criteria is presented. The experiment shows that the conclusions of estimating the matching suitability of geomagnetic map are uniform, which are obtained by the evaluation criteria and calculating the probability of correct-matching through the correlation matching test. This proves the method is very effective to judge the matching suitability of geomagnetic map. |
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| Keywords: | matching suitability of geomagnetic map correlation matching algorithm correlation surface feature correct-matching feature vector |
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