电网卫星授时系统中基于定向天线的北斗干扰源定位  

Beidou Jamming Source Location Based on Directional Antenna in Power Grid Satellite Timing System

作　　者：陈斌 陈真通 章坚武[3] 王旭旭 章坚民[4] CHEN Bin;CHEN Zhentong;ZHANG Jianwu;WANG Xuxu;ZHANG Jianmin(Zhejiang Shuangcheng Electric Co.,Ltd.,Shaoxing 312000,China;Hangzhou Chenxiao Technologies Co.,Ltd.,Hangzhou 310018,China;School of Communication Engineering,Hangzhou Dianzi University,Hangzhou Dianzi University,Hangzhou 310018,China;School of Automation,Hangzhou Dianzi University,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]浙江双成电气有限公司,浙江绍兴312000 [2]杭州晨晓科技股份有限公司,杭州310018 [3]杭州电子科技大学通信工程学院,杭州310018 [4]杭州电子科技大学自动化学院,杭州310018

出　　处：《浙江电力》2021年第2期50-55,共6页Zhejiang Electric Power

基　　金：国家自然科学智能电网联合基金项目(NSFU1866209)。

摘　　要：目前,电网多开始采用北斗卫星信号进行授时,以保证全网时间基准统一。但卫星信号容易受到欺骗干扰,针对这一问题,提出了一种定位欺骗干扰源的办法。在电网的北斗接收机受到欺骗干扰后,首先通过定向天线测量干扰源的方向。在不同地点对欺骗干扰源多次测向后,利用最小二乘法处理测向数据,迭代逼近干扰源位置。构建仿真模型,假设欺骗干扰源在1 km范围内,分析最小二乘法对欺骗干扰源位置的估算效果。仿直结果表明,定向天线测向精度在±5°、测量点位置精度在±50 m时,依然可以定位出欺骗干扰源的大致位置。Beidou satellite signals are now used for timing in power grid to ensure the unity of time reference in the whole network.However,satellite signals are apt to deception jamming.Therefore,a method of locating deception jamming sources is proposed.After the Beidou receiver of power grid is deceived and interfered,the direction of interference source is measured by directional antenna.After multiple measurements of deception jamming sources at different locations,the least square method is used to process direction finding data and iteratively approach the position of jamming sources.A simulation model is constructed and the estimation effect of the least square method on the position of deception jamming source is analyzed,assuming that the deception jamming source is within 1 kilometer.The simulation results show that the approximate position of deception jamming source can still be located when the directional antenna direction finding accuracy is about5°,and the measuring point position accuracy is about 50 meters.

关 键 词：卫星授时系统 北斗卫星系统 欺骗干扰 干扰源定位 最小二乘法 

分 类 号：TM76[电气工程—电力系统及自动化]