摘要
在研究分数阶Fourier域滤波基本理论的基础上,提出了扫频滤波器的工作原理和系统表示。通过对LFM信号和高斯白噪声分离效果仿真,发现分离后信噪比得到了较大提高。仿真实验表明,所提出的分数阶域扫频滤波器在有噪声干扰的情况下能得到较好的干扰分离和滤波效果。
On the basis of researching theories of fractional Fourier transforms area filtering,the working theories and system appearance of swept-frequency filter are pointed out.Seen from the emulation results separating LFM signal and Gauss white noise,the SNR is preferably improved after separating.Emulation results indicate that the swept-frequency filter in fractional Fourier transform can obtain better effect of separating filtration and interfere in the noise situation.
出处
《电脑与信息技术》
2007年第5期60-62,共3页
Computer and Information Technology
