电子学报Issue(9)：1730-1737,8.DOI:10.3969/j.issn.0372-2112.2013.09.010
基于特征向量的多谱线自旋回波串信号参数估计
Parameter Estimation of Multi-Spectrum Spin Echo Train Signal Based on Eigenvector
摘要
Abstract
In allusion to multi-parameter estimation of multi-spectrum spin echo train (SET) signal in the presence of addi-tive white Gaussian noise ,a two-dimensional (2-D ) parameter estimation method based on eigenvector is proposed .Using SET sig-nal to construct a 2-D data matrix ,and according to the different manner to form Hankel block matrix pencil ,the eigenvector is re-solved by utilizing the shift-invariance structure of the signal subspace ,and then ,the damping factor and frequency are estimated ac-cording to the structure rule of the eigenvector .The complex amplitude of SET is then obtained on the basis of standard least squares .The method has the capability of auto association .Under relatively large signal-to-noise ratio (SNR ) and available frequen-cy resolution conditions ,it can estimate the parameters effectively ,and has an attractive computation complexity .Simulation results show the effectiveness of the proposed algorithm .关键词
核四极矩共振/自旋回波串/2-D参数估计/特征向量基/子空间转移不变结构Key words
nuclear quadrupole resonance (NQR)/spin echo train (SET)/two-dimensional parameter estimation/eigenvec-tor-based/shift-invariance structure of the signal subspace分类
信息技术与安全科学引用本文复制引用
朱凯然,何学辉,靳标,朱文涛,苏涛..基于特征向量的多谱线自旋回波串信号参数估计[J].电子学报,2013,(9):1730-1737,8.基金项目
国家自然科学基金青年科学基金 （）
