| 基于小波分析的陀螺漂移趋势项提取 |
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| 引用本文： | 周哲,庄良杰,熊正南,洪文学.基于小波分析的陀螺漂移趋势项提取[J].中国惯性技术学报,1999(4). |
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| 作者姓名： | 周哲 庄良杰 熊正南 洪文学 |
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| 作者单位： | 哈尔滨工业大学!哈尔滨150001(周哲，洪文学)，天津航海仪器研究所!天津300131(庄良杰，熊正南) |
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| 摘 要： | 利用Ｄｅｂｅｃｈｉｅｓ 正交小波基，经过多尺度变换能够将一个序列分解成平滑的基本趋势序列和局部的变化细节序列。本文借助多尺度信号分解理论，提出了一种基于小波分析的信号特征提取算法。仿真结果表明利用该算法能够有效地对信号进行趋势估计。最后，本文将该算法应用于液浮陀螺移信号的试验建模中，实现了陀螺漂移信号的趋势项提取。
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| 关 键 词： | 小波分析 多分辨分析 小波分解 特征提取 |
Trend Extraction of Gyro's Drift Based on Wavelet Analysis |
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| Harbin Institute of Technolog,Harbin ,China, .Tianjin Navigation Instrument Institute,Tianjin ,China ZHOU Zhe,ZHUANG Liangjie,XIONG Zhengnan,HONG Wenxue.Trend Extraction of Gyro's Drift Based on Wavelet Analysis[J].Journal of Chinese Inertial Technology,1999(4). |
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| Authors: | Harbin Institute of Technolog Harbin China Tianjin Navigation Instrument Institute Tianjin China ZHOU Zhe ZHUANG Liangjie XIONG Zhengnan HONG Wenxue |
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| Institution: | Harbin Institute of Technolog,Harbin 150001,China, 2.Tianjin Navigation Instrument Institute,Tianjin 300131,China) ZHOU Zhe,ZHUANG Liangjie,XIONG Zhengnan,HONG Wenxue |
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| Abstract: | Based on multiscale analysis,a series could be divided into a smooth trend and a local detail by using Debechies's orthonormal wavelet basis.An algortim of signal eature extraction is presented based on Multiscale theory in this paper.The simulation results indicate that this approach is feasible in effecticely estimating the sigmal's trend.At last,this approach is applied to model the gyro's drift,and the trend of a gyro's drift extracted successfully. |
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| Keywords: | wavelet analysis multiresolution analysis wavelet decomposition feature extraction |
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