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导航传感器输出的测量信息一般都含有许多噪声,如何消除这些噪声以保证飞机飞行的安全平稳具有一定的研究价值。本文论述了小波变换的数学理论和方法,并根据小波变换的多分辨率分析特点,提出了一种基于小波分析的导航传感器位置数据消噪处理方法,重点利用Daubechies小波函数和阈值消噪方法对导航传感器输出的位置数据进行了离线实验分析,最后通过工程化应用,在某导航传感器中集成了该方法并进行验证,效果明显。
The measurement information output by the navigation sensor generally contains a lot of noise. How to eliminate these noises and ensure the flight safety and stability of the aircraft has certain research value. This paper discusses the mathematical theory and method of wavelet transform. According to the characteristics of multiresolution analysis of wavelet transform, this paper proposes a method of noise reduction of navigation sensor position data based on wavelet analysis. The Daubechies wavelet function and threshold denoising method The position data of the navigation sensor is analyzed offline. Finally, through the application of engineering, this method is integrated in a navigation sensor and verified, the effect is obvious.