摘要
针对传统的傅里叶变换只能对平稳干扰信号具有较好的抑制能力而对非平稳的LFM干扰信号不能有效抑制,该文引入了分数阶傅里叶变换(FRFT),在分数阶傅里叶域给出了一种LFM信号最佳旋转角度确定的算法,并利用该算法对LFM在分数阶傅里叶域进行干扰抑制。仿真结果表明,该算法能够准确确定LFM信号在分数阶傅里叶域的最佳旋转角度,从而有效抑制LFM干扰。
Considering the fact that the traditional Fourier transform has good suppression ability for the stationary jamming signal but not for the nonstationary LFM jamming signal,the paper introduces FRFT with the purpose of solving this problem.By using an algorithm of the best rotation angle of LFM jamming signal in Fractional Fourier domain.The simulation results show that this algorithm can accurately calculate the best rotation angle of LFM jamming signal in FRFT domain and then suppress the LFM jamming signal sufficiently.
出处
《电子质量》
2011年第7期1-3,6,共4页
Electronics Quality
