| 基于L1趋势滤波的飞控传感器降噪方法 |
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| 引用本文： | 唐强,雷志荣,史龙.基于L1趋势滤波的飞控传感器降噪方法[J].导航定位于授时,2020,7(1):55-59. |
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| 作者姓名： | 唐强 雷志荣 史龙 |
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| 作者单位： | 航空工业西安飞行自动控制研究所 飞行器控制一体化技术国家重点实验室，西安 710076,航空工业西安飞行自动控制研究所 飞行器控制一体化技术国家重点实验室，西安 710076,航空工业西安飞行自动控制研究所 飞行器控制一体化技术国家重点实验室，西安 710076 |
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| 基金项目： | 装备预研中航工业联合基金（61411305061002） |
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| 摘 要： | 针对飞行控制传感器中普遍存在的噪声信号,提出了一种基于L1趋势滤波技术的在线降噪方法。首先简要介绍了L1趋势滤波技术,引入了滑动窗口对算法进行改进以满足实时在线应用需求。以气压计所采集的信号为例,采用原始飞参数据,利用该方法进行降噪处理,并与文献中常用的小波降噪方法进行初步比较,基于Matlab的仿真结果验证了该方法的可行性。
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| 关 键 词： | 飞控传感器 信号降噪 L1趋势滤波 小波降噪 |
A De-noising Method for Flight Control Sensors via L1 Trend Filter |
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| TANG Qiang,LEI Zhi-rong and SHI Long.A De-noising Method for Flight Control Sensors via L1 Trend Filter[J].Navigation Positioning & Timing,2020,7(1):55-59. |
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| Authors: | TANG Qiang LEI Zhi-rong and SHI Long |
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| Institution: | Science and Technology on Aircraft Control Laboratory, AVIC XI''AN Flight Automatic Control Research Institute, Xi''an 710076, China,Science and Technology on Aircraft Control Laboratory, AVIC XI''AN Flight Automatic Control Research Institute, Xi''an 710076, China and Science and Technology on Aircraft Control Laboratory, AVIC XI''AN Flight Automatic Control Research Institute, Xi''an 710076, China |
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| Abstract: | The outputs of flight control sensors usually contain a variety of noise. To improve the signal quality and reduce the noise, a real-time de-noising method using L1 trend filter is presented in this paper. Firstly, the theory of L1 trend filter is briefly introduced, and a modification algorithm based on moving window is proposed to meet the requirement of online signal process. Then, the barometer data obtained from a real flight is de-noised using the proposed method. Finally, compared with the wavelet based de-nosing method, simulation results based on Matlab verify the feasibility of this method. |
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| Keywords: | Flight control sensors Signal de-noising L1 trend filter Wavelet de-noising |
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