期刊文献+

一种单自旋回波串信号参数估计方法 被引量:2

An Approach for Parameter Estimation of a Single Spin Echo Train Signal
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摘要 针对存在加性高斯白噪声多参数变量的单自旋回波串信号参数估计问题,提出一种参数分离化的2-D参数估计方法.利用2-D数据矩阵秩为1的特性,依照迭代加权最小二乘方法,从左、右主奇异值向量中以参数分离的方式分别估计出衰减因子和频率,基于最小二乘方法进一步获得信号幅度估计.该方法在相对高信噪比和/或大数据样本下可达到克拉美罗下界,且计算复杂度较低.仿真数据结果证明了算法的有效性. In allusion to multi-parameter estimation of a spin echo train(SET) signal in the presence of additive white Gaussian noise,a two-dimensional(2-D) parameter estimation method in a separable manner is proposed.By utilizing the rankone property of the 2-D data matrix,the damping factor and frequency are estimated in a separable manner from the principal left and right singular vectors according to an iterative weighted least squares(WLS) method.The complex amplitude of SET is then obtained on the basis of standard least squares.The parameter estimation performance of this method achieves Cramer-Rao lower bound(CRLB) at relatively large signal-to-noise ratio(SNR) and/or data size conditions.Simulation results show the effectiveness of the proposed algorithm.
出处 《电子学报》 EI CAS CSCD 北大核心 2013年第3期456-462,共7页 Acta Electronica Sinica
基金 国家自然科学基金青年科学基金(No.61001204)
关键词 核四极矩共振 自旋回波串 2-D参数估计 加权最小二乘 克拉美罗下界 nuclear quadrupole resonance(NQR) spin echo train(SET) two-dimensional parameter estimation weighted least squares(WLS) Cramer-Rao lower bound(CRLB)
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  • 1Efik Gudmundson, Andreas Jakobsson, Petre Stoica. NQR-based explosives detection-an overview[ A]. 2009 International Sym- posium on Signals, Circuits and Systems[ C]. Uuitexl States: IEEE. Computer Society, 2009.1 - 4.
  • 2高攀,金耀辉,张国进,周新建,张小坷.基于核四极矩共振原理的炸药探测方法研究与实验[J].波谱学杂志,2008,25(3):371-378. 被引量:6
  • 3Kairan Zlau, Tao Su, Xuehui He, Jinping Niu. SVD for en- hanced explosives detection using NQR[ A ]. 2010 Symposium on Security Detection and Information Processing [ C ].Lang- ford lane:Elsevier Ltd,2010.57 - 62.
  • 4朱凯然,何学辉,郑小保,苏涛.基于总体最小二乘的核四极矩共振参数估计[J].电波科学学报,2012,27(1):134-140. 被引量:7
  • 5赵振维,娄扬,金燕波,毛云志.基于自适应滤波技术的NQR信号处理[J].电波科学学报,2008,23(3):429-433. 被引量:12
  • 6Yingyi Tan, Stacy L Tanturn, Leslie M Collins. Cramer-Rao lower bound for estimating quadrupole resonance signals in non-gaussian noiseE J]. IEEE Signal Processing Letters, 2004, 11(5) :490 - 493.
  • 7Samuel D Sommsundaram, Andreas Jakobsson,Naveed R Butt. Countering radio frequency interference in single-sensor quadrupole resonance[ J ]. IEEE. Geoscience and Remote Sens- ing Letters,2009,6(1) :62 - 66.
  • 8Samuel D Somassundaram, Andreas Jakobsson, Jotm A S Smith, Kaspar Althoefer. Exploiting spin echo decay in the detection of nuclear quadrupole resonance signals[ J]. IEEE, Transactions on Geoscience and Remote Sensing, 2007,45 (4) : 925 - 933.
  • 9Yi Jiang, Petre Stoica, Jian Li. Array signal processing in the known waveform and steering vector case [ J ]. IEEE Transac- tions on Signal Processing, 2004,52(1) :23 - 35.
  • 10Erik Gudmundson, Petre Stoica, Jian Li, Andreas Jakobsson, et al. Spectral estimation of irregularly sampled exponentially de- caying signals with applications to RF spectroscopy[ J] .Jour- nal of Magnetic Resonance,2010, (203) : 167 - 176.

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  • 1Oeltze S,Lehmann D J,Kuhn A.Blood flow clustering and applications in virtual stinting of intracranial aneurysms[J].IEEE Transactions on Visualization and Computer Graphics,2014,20(5):686-701.
  • 2Shung K K.Diagnostic Ultrasound:Imaging and Blood Flow Measurements[M].New York:Taylor Francis Group,2006.34-37.
  • 3Yap C H,Thiele K,Wei Q F.Novel method of measuring vascular regurgitation using three-dimensional nonlinear curve fitting of Doppler signals within the flow convergence zone[J].IEEE Transactions on Ultrasonics,Ferroelectrics and Frequency Control,2013,60(7):1295-1311.
  • 4Kadi A,Loupas T.On the performance of regression and step-initialized ⅡR clutter filters for color Doppler systems in diagnostic medical ultrasound[J].IEEE Transactions on Ultrasonic,Ferroelectrics and Frequency Control.1995,42(3):927-937.
  • 5Bjaerum S,Torp H,et al.Clutter filters design for ultrasound color flow imaging[J].IEEE Transactions on Ultrasonics,Ferroelectrics and Frequency Control,2002,49(2):693-704.
  • 6Yoo Y M,Managuli R,Kim Y.Adaptive clutter filtering for ultrasound color flow imaging[J].Ultrasound in Medicine & Biology,2003,29(9):1311-1320.
  • 7Yoo Y,Kim Y.New adaptive clutter rejection for ultrasound color Doppler imaging:In vivo study[J].Ultrasound in Medicine & Biology,2010,36(3):480-487.
  • 8Kruse D E,Ferrara K W.A new high resolution color flow system using an eigen decomposition-based adaptive filter for clutter rejection[J].IEEE Transactions on Ultrasonics,Ferroelectrics and Frequency Control,2002,49(12):1384-1399.
  • 9Yu A C H.Eigen-based signal processing methods for ultrasound color flow imaging[D].Toronto:Univ.of Toronto,2007.54-56.
  • 10Yu A C H,Cobbold R S C.Single ensemble based eigen-processing methods for color flow imaging part 1 the Hankel-SVD filter[J].IEEE Transactions on Ultrasonics,Ferroelectrics and Frequency Control,2008,55(3):559-573.

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