Institutional Repository of Radio Astronomy Research Laboratory
| 射电天文台址常驻电磁干扰检测与识别方法 | |
| Alternative Title | Detection and Identication Method of Resident Electromagnetic Interference at Radio Observatory Site |
蔡明辉1,2 ; 刘奇1,2; 王玥1,2; 苏晓明1,2; 党振伟1; 张国福1
| |
| 2022-07-01 | |
| Source Publication | 天文学报
 |
| ISSN | 0001-5245 |
| Volume | 63Issue:4Pages:8-19 |
| Contribution Rank | 1 |
| Abstract | 为有效统计射电天文台址常驻电磁干扰的变化,提高实时电磁环境监测效率,提出一种基于先验信息的常驻电磁干扰信号检测与识别方法.首先通过信噪分离,信号能量估值从电磁环境历史监测数据中提取移动通信,地面数字电视等常驻大信号的中心频率、极化方式、来波方向等特征,经对无线信号传播信道的衰落方式进行分析,提出信号能量模型服从的分布函数假设并采用K-S检验验证该假设,合理设置能量阈值,建立信号模板库.其次,根据信号模板库中的信号特征对实时频谱数据进行双门限能量检测、信号相关性识别,从而提高信号检验的准确率,实现了常驻信号的快速统计.针对射电天文台址实测频谱,运用该方法能够有效识别并统计频谱中的常驻信号,从而为台址干扰缓解策略制定提供重要依据. |
| Other Abstract | In order to effectively count the changes of resident electromagnetic interference (EMI) of radio observatory sites and improve the efficiency of real-time electromagnetic environment monitoring,a method for detecting and identifying resident EMI signals based on prior information is proposed.Firstly,through signal-to-noise separation and signal energy estimation,the center frequency,polarization mode,incoming wave direction and other characteristics of permanent large signals such as mobile communication and terrestrial digital TV are extracted from the historical monitoring data of electromagnetic environment.After analyzing the fading mode of wireless signal propagation channel,the hypothesis of distribution function obeyed by the signal energy model is proposed and verified by K-S test.The K-S test method is used to obtain the distribution law obeyed by the resident signal energy,reasonably set the energy threshold and establish the signal template library.Secondly,according to the signal characteristics in the signal template library,the real-time spectrum data is tested by dual threshold energy detection and signal correlation recognition,so as to improve the accuracy of signal inspection.Finally,the fast statistics of resident signals is realized,which provides an important basis for the formulation of station site interference mitigation strategy. |
| Keyword | 射频干扰 假设检验 信号识别 信号模板 |
| DOI | 10.15940/j.cnki.0001-5245.2022.04.002 |
| URL | 查看原文 |
| Indexed By | CSCD ; 中文核心期刊要目总览 |
| Language | 中文 |
| CSCD ID | CSCD:7271926 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5084 |
| Collection | 射电天文研究室_微波技术实验室 110米口径全可动射电望远镜（QTT）_技术成果 |
| Corresponding Author | 刘奇 |
| Affiliation | 1.中国科学院新疆天文台乌鲁木齐830011; 2.新疆微波技术重点实验室乌鲁木齐830011 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 蔡明辉,刘奇,王玥,等. 射电天文台址常驻电磁干扰检测与识别方法[J]. 天文学报,2022,63(4):8-19. |
| APA | 蔡明辉,刘奇,王玥,苏晓明,党振伟,&张国福.(2022).射电天文台址常驻电磁干扰检测与识别方法.天文学报,63(4),8-19. |
| MLA | 蔡明辉,et al."射电天文台址常驻电磁干扰检测与识别方法".天文学报 63.4(2022):8-19. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 蔡明辉-2022-射电天文台址常驻电磁干（1217KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment