分数阶傅里叶变换在雷达多目标检测和参数估计中的应用  

The application of fractional Fourier transform in radar multi-target detection and parameter estimation

作　　者：逄勃[1] 范广伟[2] 

机构地区：[1]海军驻南京地区雷达系统军事代表室,南京210003 [2]南京船舶雷达研究所,南京210003

出　　处：《雷达与对抗》2010年第1期23-26,37,共5页Radar & ECM

摘　　要：介绍了分数阶傅里叶变换的基本原理和基本性质。结合时域和频域上扫频滤波器的原理推导出了分数域上的扫频滤波器的实现形式。利用分数阶傅里叶变换对线性调频信号有很好的聚焦性的性质,提出了基于分数阶傅里叶变换的雷达多目标检测和参数估计算法。解决了在强度相差较大的强分量信号中检测和估计弱分量LFM信号参数的问题。仿真结果表明了该算法的有效性。The basic principle and features of the fractional Fourier transform （FRFT） are introduced. According to the principle of the sweep frequency filter in time and frequency domain, the implementation form of the filter in fractional domain is derived. Based on the focus of LFM signals, the multi-target detection and parameter estimation algorithm based on FRFT is presented to detect and estimate weak component LFM signals the effectiveness of the algorithm. from strong component signals. The results verify

关 键 词：分数阶傅里叶变换 线性调频信号 参数估计 检测 

分 类 号：TN911.72[电子电信—通信与信息系统]