| 小波分析在船舶导航传感器中的应用 |
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| 引用本文： | 肖乾,赵汪洋.小波分析在船舶导航传感器中的应用[J].中国造船,2006,47(3):84-89. |
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| 作者姓名： | 肖乾 赵汪洋 |
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| 作者单位： | 1. 哈尔滨工程大学自动化学院,黑龙江,哈尔滨,150001
2. 天津大学机械工程学院,天津,300072 |
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| 摘 要： | 论述小波变换的数学理论和方法。根据小波变换的多分辨率分析方法，重点分析小波变换在导航系统中的作用；利用Daubechies小波函数，采用阈值去噪法，可在低信噪比的情况下较准确地估计导航传感器的原始信号；分别针对多普勒系统和北斗双星定位系统，借助小波变换对其接收信号进行了离线仿真研究。仿真分析表明，应用小波变换的分层技术抽取特征参数效果明显，去噪效果亦较为理想。
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| 关 键 词： | 船舶、舰船工程 小波分析 导航传感器 仿真 |
| 文章编号： | 1000-4882(2006)03-0084-06 |
| 收稿时间： | 05 30 2005 12:00AM |
| 修稿时间： | 03 29 2006 12:00AM |
Application of Wavelet Analysis in Ship Navigation Sensor |
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| XIAO Qian,ZHAO Wang-yang.Application of Wavelet Analysis in Ship Navigation Sensor[J].Shipbuilding of China,2006,47(3):84-89. |
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| Authors: | XIAO Qian ZHAO Wang-yang |
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| Institution: | 1. College of Automatization, Harbin Engineering University, Harbin 150001, China; 2. College of Machanical Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | The theory of wavelet analysis and the multi-resolution analysis method are introduced and then applied to analyze navigation sensor noise in this paper. By means of Daubechies wavelet function and using threshold decreasing noise method, the original value of ship navigation sensor can precisely be estimated under the low signal-to-noise ratio. According to the character of Bei Dou satellite navigation positioning system, off-line simulation research on the received signal is performed using wavelet transform. The simulation research results show that the effectiveness of the method filtering out sensor noise is very obvious. |
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| Keywords: | ship engineering wavelet analysis navigation sensor simulation |
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