%0 Journal Article
%T A MULTIPLE LINE ENHANCER<br>一种多谱线增强器
%A Zou Hongxing
%A Zhou Xiaobo
%A Li Yanda
%A <br>邹红星
%A 周小波
%A 李衍达
%J 电子与信息学报
%D 2000
%I 
%X A general difficulty of using singular value decomposition(SVD) to split signal and noise subspaces is in the right choice of effective rank. The commonly used method toward this end is to use a fixed threshold. Yet despite its apparent physical significance, the lack oi adaptability has strongly limited the popularity of subspace approach in line enhancement. IE order to surmount this drawback, a cluster method based algorithm for determining the effective rank is proposed in accordance with the a priori information obtained from the time-frequency distribution of the noisy sinusoids. Simulation results show that the methodology advocated is effective for solving a class of multiple line enhancement problems.
%K Singular value decomposition
%K Subspace
%K Effective rank
%K Line enhancement
%K Short-time Fourier transform<br>奇异值分解
%K 子空间
%K 有效秩
%K 谱线增强
%K 短时Fourier变换
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=A7C3ABB1C834C6FBC701420B6F518E98&yid=9806D0D4EAA9BED3&vid=BC12EA701C895178&iid=0B39A22176CE99FB&sid=6ED15D8DCB279BC4&eid=E1D946F217E3B046&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=7