一种高效的LFM信号参数估计方法及性能分析

被引:12
作者
周良臣
杨建宇
唐斌
机构
[1] 电子科技大学电子工程学院
关键词
线性调频; 调制斜率; 初始频率; 幅度; 初相;
D O I
暂无
中图分类号
TN911.23 [信号检测与估计];
学科分类号
070104 ; 081101 ;
摘要
该文从最大似然估计出发,得出了一种LFM信号参数估计方法,并采用一阶扰动模型分析其统计性能.该方法涵盖经典的多项相位变换法,将最大似然估计的多维搜索转化为一维搜索,但性能较多项相位变换法更优,低信噪比时仍可接近Cramer-Rao界.另外,结合基于傅里叶系数内插的快速高精度测频算法,该方法运算量与多项相位变换法相当,便于实现.仿真验证了其有效性及性能分析.
引用
收藏
页码:1128 / 1133
页数:6
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