A Data-Direct Approach to Resolving Two-Dimensional Sinusoids in White Noise

Zhang Xianda

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A Data-Direct Approach to Resolving Two-Dimensional Sinusoids in White Noise

更新时间：2025-12-08

- A Data-Direct Approach to Resolving Two-Dimensional Sinusoids in White Noise
- Acta Electronica Sinica Issue 9, Pages: 41-48(1993)
- 作者机构：
  
  清华大学自动化系,北京,100084
- 作者简介：
- 基金信息：
- DOI：
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- Published：1993
- 稿件说明：
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[1]张贤达.二维正弦波检测的直接数据法[J].电子学报,1993(09):41-48.

Zhang Xianda. A Data-Direct Approach to Resolving Two-Dimensional Sinusoids in White Noise[J]. Acta Electronica Sinica, 1993, (9): 41-48.
[1]张贤达.二维正弦波检测的直接数据法[J].电子学报,1993(09):41-48. DOI：

Zhang Xianda. A Data-Direct Approach to Resolving Two-Dimensional Sinusoids in White Noise[J]. Acta Electronica Sinica, 1993, (9): 41-48. DOI：

摘要

本文用一种新方法证明了

二维正弦波频率服从的二维特征多项式可取四种不同形式

并提出了一种直接数据法

借助它可直接利用观测数据本身高分辨检测出白噪声中的多个二维正弦波。

Abstract

Using a new method

this paper shows that the 2-D characteristic polynomial A（z1

z2） =0 obeyed by 2-D sinusoidal frequencies may take four different forms.A data-direct approach is proposed for resolving several closely spaced 2-D sinusoids in white noise.This appproach adopts only the observed data rather than autocorrelations

and is shown to be of high resolution.

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