| 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。 |
| 关键词: 飞控传感器 信号降噪 L1趋势滤波 小波降噪 |
| DOI： |
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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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| A De-noising Method for Flight Control Sensors via L1 Trend Filter |
| TANG Qiang,LEI Zhi-rong,SHI Long |
| (Science and Technology on Aircraft Control Laboratory, AVIC XI'AN Flight Automatic Control Research Institute, Xi'an 710076, China) |
| 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. |
| Key words: Flight control sensors Signal de-noising L1 trend filter Wavelet de-noising |
