多分量非均匀采样LFM信号的检测

Detection of Multi-component Nonuniformly Sampled LFM Signal

提出了一种新的基于分数阶Fourier域非均匀采样理论的多分量LFM信号检测方法。给出一种新的非均匀采样方法,建立该方法的模型,得到了非均匀采样LFM信号在分数阶Fourier域的频谱表达式。在此基础上,对多分量非均匀采样LFM信号进行了检测研究。与传统的LFM信号检测方法相比,该方法具有较好的检测信号的能力,同时减少了运算量,满足了实时性要求。

This paper presents a novel method for the detection of multi-component LFM signal based on the nonuniform sampling theorem of fractional Fourier domain. A novel nonuniform sampling method is proposed and the model is established, then the fractional spectral expression of the nonuniformly sampled LFM signal is derived. On this base, the detection for multi-component nonuniformly sampled LFM signal has been studied. In contrast with traditional detection method, the presented method has better ability to detect signal. Meanwhile, it reduces operation quantum anti meets the realtime request.