| 船用光纤陀螺小波实时滤波算法的设计与实现 |
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| 引用本文： | 程建华,李明月,时俊宇,陈李.船用光纤陀螺小波实时滤波算法的设计与实现[J].传感器与微系统,2011,30(7):104-107,110. |
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| 作者姓名： | 程建华 李明月 时俊宇 陈李 |
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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. 北京航天时代激光导航技术有限责任公司,北京,100143 |
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| 基金项目： | 国家自然科学基金资助项目，中央高校基本科研业务费专项资金资助目 |
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| 摘 要： | 针对光纤陀螺随机漂移噪声大的问题,以船用捷联式惯导系统应用需求为研究对象,对船用光纤陀螺的输出信号特征进行了深入分析。针对陀螺信号需实时处理的要求,设计了基于阈值法的实时小波滤波算法。结合陀螺信号特征分析结果,完成了实时滤波算法的小波基、分解尺度、阈值以及阈值函数设计。实时性验证实验与实测信号的实时滤波实验结果表明:该算法在满足陀螺信号实时性的条件下,能完成陀螺随机漂移噪声的有效滤波。
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| 关 键 词： | 船用光纤陀螺 小波 阈值 实时滤波 |
Design and realization of real-time wavelet filter algorithm for shipborne FOG |
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| CHENG Jian-hua,LI Ming-yue,SHI Jun-yu,CHEN Li.Design and realization of real-time wavelet filter algorithm for shipborne FOG[J].Transducer and Microsystem Technology,2011,30(7):104-107,110. |
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| Authors: | CHENG Jian-hua LI Ming-yue SHI Jun-yu CHEN Li |
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| Affiliation: | 1(1.School of Automation,Harbin Engineering University,Harbin 150001,China;2.Beijing Aerospace Times Laser Inertial Technology Company Ltd,Beijing 100143,China) |
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| Abstract: | According to the large random drift of fiber-optic gyro(FOG),take application requirement of the shipborne strapdown inertial navigation system as researching target,the output signals character of shipborne FOG is analyzed thoroughly.Aiming at the demand of real-time,a wavelet filter algorithm which adopts the threshold de-noising method is designed.Combining the characteristic analysis result of the gyro signals design of wavelet basis,decomposition scale,the threshold and the thresholding function is realized.By checking the real-time capability and the result which is verified by practical test,the algorithm can achieve effective filtering of random drift noise of FOG,and satisfy the demand of real-time. |
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| Keywords: | shipborne FOG wavelet threshold real-time filtering |
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