噪声中非监督的多正弦信号检测  

Recursive multi-sinusoidal signal detection in noise

作　　者：何伟[1] 唐斌[1] 肖先赐[1] 

机构地区：[1]电子科技大学电子工程系,四川成都610054

出　　处：《系统工程与电子技术》2004年第5期575-577,共3页Systems Engineering and Electronics

摘　　要：就被测信号的强弱差异对使用常规DFT谱峰搜索的信号检测影响,基于非监督的递归算法,通过选择适当的门限参数,提出了一种适合于强弱信号并存的多信号检测方法。该方法通过在检测过程中不断剔除强信号的影响来提高对弱信号的检测能力,给出了检测过程中门限参数选择的原则。计算机仿真实验验证了此方法的有效性。The method is limited when the conventional DFT-based techniques are used in sinusoid detecting in the presence of strong signal and weak signal in noise. A simple unsupervised recursive algorithm which overcomes the difficulties by choosing the proper threshold is presented. The computer simulation is made to illustrate the effectiveness of the proposed algorithm.\;

关 键 词：正弦信号 递归算法 检测 门限 

分 类 号：TN919[电子电信—通信与信息系统]