复杂电磁环境下的电离层总电子含量反演方法  

Inversion method of total ionospheric electron content in complex electromagnetic environment

作　　者：石善斌[1] 董翔[2] 黄胜 朱鹏飞 朱庆林[2] SHI Shanbin;DONG Xiang;HUANG Sheng;ZHU Pengfei;ZHU Qinglin(Beijing Institute of Tracking and Communications Technology,Beijing 100094,China;China Research Institute of Radiowave Propagation,Qingdao 266107,China;Shanghai Huace Navigation Technology Co.,Shanghai 201799,China)

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]中国电波传播研究所,青岛266107 [3]上海华测导航技术股份有限公司,上海201799

出　　处：《电波科学学报》2025年第1期113-123,共11页Chinese Journal of Radio Science

摘　　要：利用全球导航卫星系统(Global Navigation Satellite System,GNSS)双频差分信号进行电离层电子含量反演是一种常用的电离层探测手段,但GNSS信号在强电磁干扰环境下,被淹没于电磁噪声中而无法被提取,影响电离层总电子含量(total electron content,TEC)反演系统的可靠性。采用传统调零抗干扰阵列天线方案能解决干扰源剥离的问题,但调零信号的天线相位中心不稳定导致高精度的相位平滑伪距和精密单点定位(precise point positioning,PPP)算法无法收敛。针对强干扰环境下的电离层监测需求,本文提出一种抗干扰TEC数据反演手段,通过对阵列天线通道幅相一致性进行校正,保证相位中心的稳定性,从而推算出准确的电离层TEC信息,提高了系统的可靠性和抗干扰能力。Ionospheric electron content inversion using Global Navigation Satellite System(GNSS)dualfrequency differential signals is a commonly used means of ionospheric detection.However,the GNSS signal is submerged in electromagnetic noise and cannot be extracted under strong electromagnetic interference,which affects the reliability of the total electron content(TEC)inversion system.The traditional zeroing anti-jamming array antenna scheme can solve the problem of interference source stripping,but due to the unstable antenna phase center of the zeroing signal,resulting in high-precision phase smoothing pseudorange and precise point positioning(PPP)algorithms can not be converged.For the ionospheric monitoring needs strong interference environment,this paper proposes an anti-interference TEC data inversion means through the array antenna channel amplitude-phase consistency correction,to ensure the stability of the phase center,so as to deduce the accurate ionospheric TEC information,which can improve the system reliability and anti-interference ability.

关 键 词：总电子含量(TEC) 倾斜总电子含量(STEC) 垂直总电子含量(VTEC) 全球导航卫星系统(GNSS) 双频差分 抗干扰 

分 类 号：P352[天文地球—空间物理学]