广播卫星电视接收机对SMAP卫星L波段微波辐射计的射频干扰特征分析  

Analysis of RF Interference Characteristics of Broadcasting Satellite TV Receivers to SMAP Satellite L-Band Microwave Radiometer

作　　者：王新新 王祥[2] 范剑超[2] 王林[2] 孟庆辉[2] 魏恩泊[1,3] WANG Xinxin;WANG Xiang;FAN Jianchao;WANG Lin;MENG Qinghui;WEI Enbo(Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;National Marine Environmental Monitoring Center,Dalian 116023,China;Key Laboratory of Ocean Circulation and Waves,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院海洋研究所,青岛266071 [2]国家海洋环境监测中心,大连116023 [3]中国科学院海洋环流与波动重点实验室,青岛266071 [4]中国科学院大学,北京100049

出　　处：《电子与信息学报》2021年第8期2292-2299,共8页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(41806212);国家重点研发计划(2016YFC1401000)。

摘　　要：该文通过融合SMAP卫星L波段交叉极化亮温,建立基于密度和强度空间分布特征的多重迭代聚类射频干扰(RFI)检测识别算法。分析并提取日本典型RFI源(广播卫星电视接收机)密度和累积强度的时空分布和变化特征。电视接收机作为典型的RFI源,主要分布在日本城市化水平和范围均相对较大的区域(条状或面状),局部区域内分布点圆状RFI(可能为微波辐射基站),导致局地化RFI累积强度具有很高的水平。同时,在日本其他区域也检测到独立分布的点圆状RFI,干扰强度和范围相对局限。2018年开始,日本RFI整体分布范围和强度能级呈下降趋势。典型RFI源特征分析对于我国建立RFI检测、识别及抑制模型具有重要意义。Based on the fusion of SMAP satellite L-band cross-polarized brightness temperature,a multiiteration clustering Radio Frequency Interference(RFI)detection and recognition algorithm based on its spatial distribution of density and intensity is established,and the spatial and temporal distribution and variation characteristics of the density and cumulative intensity of typical Japanese RFI sources(broadcast satellite TV receivers)are analyzed and extracted.As a typical RFI source,TV receivers are mainly distributed in areas with relatively large urbanization level and range(stripes or planes),with dotted RFI sources(possibly microwave radiation base stations)distributed in local areas,resulting in local areas with high RFI levels.In other areas where the urbanization level and scope are relatively small,the dot-round RFI sources are also detected,but the interference intensity and range are relatively limited.Beginning in 2018,the overall RFI distribution range and intensity level showed a downward trend.This work is of great significance to the establishment of RFI detection,identification and suppression models in China.

关 键 词：SMAP卫星 L波段射频干扰 广播卫星电视接收机 时空特征分析 

分 类 号：TP722.6[自动化与计算机技术—检测技术与自动化装置]