Empirical Mode Decomposition Method for Geomagnetic Matching Navigation
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摘要: 实测的地磁数据易受到软硬磁干扰,导致地磁数据特征不明显,严重影响地磁匹配导航的准确性。该文对实测的地磁信号分别经小波强制降噪、小波阈值降噪和基于经验模态分解的阈值滤波,处理后的数据与实测的地磁数据分别进行了地磁匹配,匹配结果显示,基于经验模态分解的阈值滤波方法的匹配误差最低。该方法运用在使用磁通门与陀螺组合方式进行的车辆导航中结果表明该方法可以有效提高导航的精度。
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