An Approach of Suppressing Non-long Interference in HF Backscatter System

WEI Na; LI Tie-cheng; LIU Wen; FAN Jun-mei

您当前的位置：

首页 >

文章列表页 >

An Approach of Suppressing Non-long Interference in HF Backscatter System

更新时间：2025-07-16

- An Approach of Suppressing Non-long Interference in HF Backscatter System
- Acta Electronica Sinica Vol. 38, Issue 3, Pages: 620-625(2010)
- 作者机构：
  
  中国电波传播研究所,山东,青岛,266107
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN958
- Published：2010
- 稿件说明：
移动端阅览
WEI Na, LI Tie-cheng, LIU Wen, et al. An Approach of Suppressing Non-long Interference in HF Backscatter System[J]. Acta Electronica Sinica, 2010, 38(3): 620-625.
DOI：

WEI Na, LI Tie-cheng, LIU Wen, et al. An Approach of Suppressing Non-long Interference in HF Backscatter System[J]. Acta Electronica Sinica, 2010, 38(3): 620-625. DOI：

摘要

高频返回散射系统工作在HF频段，这一频段电磁环境非常复杂，并且存在各种类型的干扰，这些干扰严重影响了系统的工作性能，必须加以抑制. 通过对高频返回散射系统实测数据中存在的干扰进行分析，发现有种干扰在Doppler域相邻Doppler单元以及相邻距离单元均有较强的相关性. 针对这种干扰，提出了一种Doppler域基于特征子空间的干扰抑制方法，即在Doppler域构造干扰协方差矩阵，进行特征分解得到干扰子空间，然后将待处理单元的回波向干扰子空间的正交补空间投影，从而将干扰滤除. 实测数据处理结果证明了该方法的有效性.

Abstract

HF band is a severe electromagnetic environment in which HF backscatter system works. All kinds of interference in this band having a strong impact on the system’s performance must be suppressed. Through analyzing the interference of the measured data of HF backscatter system

we find that some interference appears strong correlativity between adjacent range units.and between adjacent Doppler units

respectively. Aiming at this kind of interference

an interference suppressing method which is based on eigen subspace in Doppler field is proposed. The method is: firstly

interference convariance matrix is constructed in Doppler field

after eigenvalue decomposition of this matrix

the interference subspace is obtained

then the pending units are projected to the orthogonal supplement of the interference subspace

finaly

the interference is excised. The results of applying this method to the measured data show the effectivity of the proposed method.

关键词

Keywords

references

Views

961

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Automatic Recognition of Transient Interference in the Range‑Doppler Map for Over‑the‑Horizon Radar

Frequency Sweeping Interference Suppressing in DSSS System Using Fractional Fourier Transform

Transient Interference Excision in OTHR

Related Author

LU Kun

LUO Zhong‑tao

XIA Hang

HE Zi‑shu

QI Lin

TAO Ran

ZHOU Si-yong

WANG Yue

Related Institution

Nanjing Research Institute of Electronics Technology

School of Communication and Information Engineering， Chongqing University of Posts and Telecommunications

School of Information and Communication Engineering， University of Electronic Science and Technology of China

Dept.Of Electronic Engineering,Beijing Institute of Technology

College of Information,Zhengzhou University

⁰