首页> 外文期刊>The Journal of Chemical Physics >Multidimensional harmonic inversion by filter-diagonalization
【24h】

Multidimensional harmonic inversion by filter-diagonalization

机译:滤波器对角化实现多维谐波反演

获取原文
获取原文并翻译 | 示例
           

摘要

We present a new method for harmonic inversion in multi-dimensions, i.e., extracting the wave vectors omega(k) and amplitudes d(k) from a signal c(n)= Sigma(k)d(k)e(-in omega lambda), where n defines the multi-index. The method is an extension of the filter-diagonalization method for 1D signals. As such it enables the harmonic inversion in any small wavevector domain D-omega l by solving a small generalized eigenvalue problem. The computed omega(k) and d(k) can then be used to create a high resolution image F(omega) for omega is an element of D-omega. The method greatly overperforms the conventional Fourier analysis for a model 2D signal containing as many as 10 000 damped sinusoids with moderate amount of noise. (C) 1998 American Institute of Physics. [References: 16]
机译:我们提出了一种用于多维谐波反演的新方法,即从信号c(n)= Sigma(k)d(k)e(-in omega)中提取波矢量omega(k)和振幅d(k) lambda),其中n定义了多索引。该方法是针对一维信号的滤波器对角化方法的扩展。这样,它可以通过解决一个小的广义特征值问题,在任何小波矢域D-ωl中实现谐波反演。然后可以将计算出的omega(k)和d(k)用于创建高分辨率图像F(omega),因为omega是D-omega的元素。对于包含多达1万个阻尼正弦波且噪声量适中的2D模型信号,该方法大大优于传统的傅立叶分析。 (C)1998美国物理研究所。 [参考:16]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号