| 小波域软阈值降噪的地磁匹配导航仿真研究 |
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| 引用本文： | 乔玉坤,王仕成,张金生,张琪,孙渊.小波域软阈值降噪的地磁匹配导航仿真研究[J].兵工学报,2011,32(9):1083-1088. |
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| 作者姓名： | 乔玉坤 王仕成 张金生 张琪 孙渊 |
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| 作者单位： | 第二炮兵工程学院自动控制系,陕西西安,710025;第二炮兵工程学院自动控制系,陕西西安,710025;第二炮兵工程学院自动控制系,陕西西安,710025;第二炮兵工程学院自动控制系,陕西西安,710025;第二炮兵工程学院自动控制系,陕西西安,710025 |
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| 基金项目： | 国家自然科学基金资助项目(6100412860904083) |
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| 摘 要： | 为消除地磁数据中的噪声和干扰,提高地磁匹配导航的精度和可靠性,采用小波降噪方法对地磁数据进行预处理.通过对小波母函数特性的研究,结合地磁场自身规律提出了地磁数据降噪中小波母函数的选取准则,并根据地磁匹配导航的特点提出了基于误差和相关系数的小波分解层数确定方法.通过对小波降噪主要方法的定性分析,采用了小波域软阈值降噪方法...
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| 关 键 词： | 飞行器控制、导航技术 小波母函数 软阈值 降噪 地磁导航 |
Simulation Research on Geomagnetic Matching Navigation Based on Soft-threshold Wavelet Denoising Method |
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| QIAO Yu-kun,WANG Shi-cheng,ZHANG Jin-sheng,ZHANG Qi,SUN Yuan.Simulation Research on Geomagnetic Matching Navigation Based on Soft-threshold Wavelet Denoising Method[J].Acta Armamentarii,2011,32(9):1083-1088. |
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| Authors: | QIAO Yu-kun WANG Shi-cheng ZHANG Jin-sheng ZHANG Qi SUN Yuan |
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| Affiliation: | （Department of Automatic Control, The Second Artillery Engineering College, Xi’an 710025, Shaanxi, China） |
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| Abstract: | To eliminate noise and magnetic disturbance from surveyed data of geomagnetic field and improve the accuracy and reliability of geomagnetic matching navigation, a denoising method based on wavelet transform is proposed for pretreatment.Selecting rules of generating wavelets are given after researching the characteristics of generating wavelets and the mechanism of geomagnetic field,and a method to determine the number of decomposition layers for wavelet analysis based on errors and correlative coefficients ... |
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| Keywords: | control and navigation technology of aircraft generating wavelet soft-threshold denoising geomagnetic navigation |
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