摘要
主要研究电离层延迟对外辐射源无源雷达定位的影响。首先建立了电离层延迟对该系统定位影响的定量分析模型,并利用国际GPS服务中心(international GPS service,IGS)解算的电离层电子含量(total electron contain,TEC)连续15d的观测数据,研究了上海地区电离层延迟对近地轨道卫星和同步轨道卫星为辐射源的无源雷达定位结果的影响。仿真结果表明电离层延迟引起的定位呈现规律性向东偏移,电离层延迟对同步轨道卫星产生的定位误差可达数米,而对近地轨道卫星产生的定位误差可达几十米。
In this paper the effect of the ionospheric delay on passive radar using opportunity transmitters is addressed.We establish analysis models and methods on the effects of the ionosphere on passive radar using opportunity transmitters.Ionospheric data TEC（total electron contain）for 15 days published by IGS（international GPS service）are used to study the influence of ionospheric delay.Both low Earth-orbiting spacecraft and geostationary are considered.Simulation results show that the positioning error caused by ionospheric delay presents the eastward migration,the positioning error of geostationary can up to several meters,and the positioning error of low Earth-orbiting spacecraft can up to several meters.
出处
《电子测量技术》
2017年第7期137-140,145,共5页
Electronic Measurement Technology
