摘要
现代雷达体制下,线形调频(LFM)信号是一种常用的脉冲压缩雷达信号。为了精确获取多分量线性调频信号中分量的数量,引入聚类方法对LFM信号的Radon-时频分析结果进行聚类分析,同时完成多个分量的检测；为了减少聚类分析的输入数据集和提高计算效率,对Radon-时频分析结果进行了近似零均值处理,并分析了不同信噪比情况下的处理结果。仿真和试验结果表明：在较低信噪比条件下,这种方法可有效地检测多分量LFM信号中分量数和进行参数估计。
Linear FM （LFM） signal is a commonly- used pulse compression radar signal in modem radar system. The clustenng algorithm was introduced to get the number of the pinnacles in the result of the time - frequency analysis and Radon transform of the multi - component LFM signal,and to finish the detection of the components of the LFM signal. Meanwhile, an approach called Near Zero Mean, for reducing the point number of the input data - set for clustering, was proposed to improve the computation efficiency. The simulation results depict that this approach is efficient for the detection and parameter estimation of the multi - component LFM signal with low SNR.
出处
《无线电工程》
2006年第11期16-18,共3页
Radio Engineering
