匹配傅里叶变换技术的研究与应用

Research and application on matched fourier transform techniques

首先分析匹配傅里叶变换的特点,阐述了将匹配傅里叶变换应用于线性调频信号的优点,将其与传统的傅里叶变换进行比较,说明匹配傅里叶变换是线性的。最后将匹配傅里叶变换应用于高动态信号多普勒频率偏移的仿真中,实验结果表明了此算法能够更好地去除混合信号中的噪声,准确地估计出信号的频偏。

Firstly,this paper analyzed the characteristics of matched Fourier transform. It described the advantages of matched fourier transform to linear FM signal. Compare with the traditional fourier transform,descriptie that matched Fourier transform was linear. Finally,the Fourier transform was applied to match the high dynamic signal Doppler frequency offset simulation. Experimental results showed that this algorithm could better remove the mixed noise in the signal,accurate estimatesd of the frequency offset of the signal.