基于小波变换的实时信号噪声快速识别

Speedy Recognition of Noise in Real Time Signal Based on Wavelet Transform

在火箭飞行过程中 ,常常需要对火箭位置和飞行姿态进行实时处理 ,这必须以准确的飞行测量数据为基础。但在测量到的火箭飞行数据中往往伴随着大量噪声 ,如何快速有效地识别这些噪声成为关注的焦点。针对该课题给出了一种基于小波方法的实时信号所包含噪声的在线快速识别算法 ,能大大减少小波变换的计算量 ,其时间复杂性为常数 ,并在采集实时信号的同时快速识别出信号包含的噪声。实用证明该算法处理这类问题的效果好 ,充分满足了实时性要求 。

It's necessary to process position and gesture of rocket on real time within the flight of rocket. This work should base exact data. But much noise has been found in the data and the noise recognize is regarded as a focus. A speedy online arithmetic recognizing noise is proposed based on wavelet transform. The computing complexity measured by time of this arithmetic is a constant which is greatly reduces the works of calculation of wavelet transform. It can recognize the noise fast when the signal is gathered. The applications in these problems show that the effective arithmetic satisfies the needs of real time and can handle the real time data measured in other yields.