| 基于前向线性预测和小波的FOG信号降噪算法研究 |
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| 引用本文： | 刘强,徐晓苏. 基于前向线性预测和小波的FOG信号降噪算法研究[J]. 舰船电子工程, 2012, 32(1): 35-37 |
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| 作者姓名： | 刘强 徐晓苏 |
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| 作者单位： | 1. 东南大学微惯性仪表与先进导航技术教育部重点实验室,南京210096／海军工程大学导航工程系,武汉430033
2. 东南大学微惯性仪表与先进导航技术教育部重点实验室,南京,210096 |
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| 基金项目： | 国家自然科学基金项目（编号：51175082,60874092,50575042）; 原国防科工委基础科研项目（编号：C1420080224）; 航空科学基金项目（编号：20080869009）资助 |
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| 摘 要： | 针对光纤陀螺输出信号的噪声,提出了一种处理该噪声的前向线性预测滤波与小波变换相结合的级联滤波方法,以前向线性预测滤波作为前段滤波器,采用DB4小波函数的强制阈值小波变换作为第二级滤波器。运用Allan方差法对级联滤波结果进行了分析,结果表明该级联滤波能取得较好的光纤陀螺信号降噪效果。
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| 关 键 词： | 光纤陀螺 FLP滤波 小波变换 级联滤波 |
FOG Signal Denoising Algorithm Based on Forward Linear Prediction and Wavelet |
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| LIU Qiang,XU Xiaosu. FOG Signal Denoising Algorithm Based on Forward Linear Prediction and Wavelet[J]. Ship Electronic Engineering, 2012, 32(1): 35-37 |
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| Authors: | LIU Qiang XU Xiaosu |
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| Affiliation: | 1.Key Laboratory of Micro-inertial Instrument and Advanced Navigation Technology,Ministry of Education, Southeast University,Nanjing 210096)(2.Department of Navigation Engineering,Naval University of Engineering,Wuhan 430033) |
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| Abstract: | Against the noise of FOG signal,a cascaded filter in forward linear prediction（FLP） filter and wavelet transform was proposed.The FLP filter as a preceding filter and the DB4 wavelet function mandatory threshold wavelet transform was used as second filter.Then Analyzes the results of cascaded filter by Allan variance,the result shows good denoising effect to FOG sinal by using cascaded filter. |
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| Keywords: | fiber optic gyro forward linear prediction filter wavelet transform cascaded filter |
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