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基于地磁特征提取的搜索导航研究
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TN96

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国家自然科学基金(42404082)


Research on Search Navigation Extraction from Geomagnetic Feature
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    摘要:

    现有地磁导航研究所采用的导航参量大多是基于原始地磁参量,地磁参量的选取会影响导航的效率, 在选择导航参量过程中存在人为性。针对这一问题,提出一种基于地磁特征提取的搜索导航方法,利用主成分分析的方法提取出能较为全面地描述该位置磁场信息的地磁特征作为新的导航参量,结合现有的进化搜索策略和梯度下降法,充分利用提取出的地磁特征作为新的导航参量,引导载体不断向目标趋近,实现导航目的。实验结果表明:基于原始地磁参量的传统搜索导航方法目标函数迭代步数为647,基于提取主成分特征的搜索导航方法目标函数迭代步数为564,而文中提出的基于主成分特征的进化梯度导航方法迭代步数为238,迭代步数明显下降,导航效率提高,并且子目标函数收敛的一致性也更好,能较好地利用原有磁场信息,在自主远程导航中具有很好的应用前景。

    Abstract:

    The navigation parameters used in existing geomagnetic navigation research are most of original geomagnetic parameters-based. The selection of geomagnetic parameters may affect the efficiency of navigation, and there is man-man error in the process of selecting navigation parameters. For the above-mentioned reasons, a search navigation method is proposed based on the geomagnetic feature extraction. The extracted geomagnetic features able to comprehensively describe the magnetic field information of the location are taken as new navigation parameters by the principal component analysis method. In combination with the existing evolutionary search strategies and gradient descent methods, the extracted geomagnetic features are fully utilized for taking as new navigation parameters to guide the carrier to continuously approach the target and achieve navigation objectives. The experimental results show that the traditional search navigation method based on the original geomagnetic parameters has an iteration step of 647 for the objective function, while the search navigation method based on extracting principal component features has an iteration step of 564 for the objective function. However, the evolutionary gradient navigation method based on principal component features proposed in this paper has an iteration step of 238, significantly reducing the iteration step number, improving navigation efficiency and the consistency of sub objective function convergence. The original magnetic field information is utilized further in autonomous remote navigation, and there are good prospects.

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郭娇娇, 杨宾锋, 纪晓琳, 曹海霞, 郭宁宁.基于地磁特征提取的搜索导航研究[J].空军工程大学学报,2025,26(4):75-81

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  • 在线发布日期: 2025-08-07
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