| 一种新的基于R-D分析的重力匹配辅助导航算法 |
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| 引用本文： | 王跃钢,文超斌,郭志斌,杨家胜,左朝阳.一种新的基于R-D分析的重力匹配辅助导航算法[J].地球物理学报,2014,57(5):1424-1432. |
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| 作者姓名： | 王跃钢 文超斌 郭志斌 杨家胜 左朝阳 |
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| 作者单位： | 1. 第二炮兵工程大学304教研室, 西安 710025;2. 中国人民解放军96124部队, 通化 134000 |
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| 基金项目： | 国防预研基金项目(103030203)资助 |
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| 摘 要： | 针对现有重力辅助导航匹配算法匹配精度、匹配率受惯导初始位置误差影响较大以及实时性较差等不足，提出一种实时重力辅助导航匹配算法.新算法利用惯导输出的相对位置信息，提取半径、方向角约束模型，然后通过对相似性进行度量，筛选出待匹配点，得到最优匹配参数，该算法可以在惯导初始误差较大的情况下进行实时、高效匹配.实验结果表明，新算法对惯导初始误差不敏感、鲁棒性好，而且精度高、实时性强.
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| 关 键 词： | 重力辅助导航 径、向分析 重力图匹配 插值 优化模型 |
| 收稿时间： | 2013-05-10 |
A new matching algorithm for gravity aided navigation based on R-D analysis |
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| WANG Yue-Gang,WEN Chao-Bin,GUO Zhi-Bin,YANG Jia-Sheng,ZUO Zhao-Yang.A new matching algorithm for gravity aided navigation based on R-D analysis[J].Chinese Journal of Geophysics,2014,57(5):1424-1432. |
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| Authors: | WANG Yue-Gang WEN Chao-Bin GUO Zhi-Bin YANG Jia-Sheng ZUO Zhao-Yang |
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| Institution: | 1. 304 Unit, The Second Artillery Engineering University, Xi'an 710025, China;2. Unit 96124 of the Chinese People's Liberation Army, Tonghua 134000, China |
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| Abstract: | The current matching algorithm for real-time gravity aided navigation has some deficiencies such as low matching accuracy, big influence of initial position on matching ratios and poor real-time nature. To solve these problems, this work proposes a new algorithm which uses relative position from inertial navigation to construct the constraint model of radius and azimuth. Then it measures similarity to choose points to be matched and yield optimal matching parameters. Even if in the case of big initial errors of inertial navigation, this algorithm can perform real-time matching at a high efficiency. The experimental results show that this method is not sensitive to initial errors of inertial navigation, robust, accurate, and of good real-time nature. |
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| Keywords: | Gravity aided navigation R-D analysis Gravity map matching Interpolation Optimization models |
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