基于北斗GEO卫星双频观测值连续监测电离层延迟  

Ionospheric Delay Continuous Monitoring Based on BDS GEO Satellites Dual Frequency Observations

作　　者：赵坤娟 杨旭海[1,2] 杨海彦[1,2] 闫温合[1,2] 李伟超 ZHAO Kun-juan;YANG Xu-hai;YANG Hai-yan;YAN Wen-he;LI Wei-chao(National Time Service Center,Chinese Academy of Sciences,Xi＇ an 710600,China;Key Laboratory of Precise Positioning and Timing Technology,Chinese Academy of Sciences,Xi＇ an 710600,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院精密导航定位与定时技术重点实验室,西安710600 [3]中国科学院大学,北京100039

出　　处：《宇航计测技术》2018年第4期67-72,共6页Journal of Astronautic Metrology and Measurement

基　　金：中国科学院"西部青年学者"--太阳活动的电离层TEC响应特征研究(XAB2017B11)

摘　　要：利用北斗GEO卫星观测数据直接计算电离层延迟。由于GEO卫星具有固定穿刺点和静地的特性,使得观测站监测电离层变化时可不考虑空间变化,并可进行连续不间断监测。通过分析北斗GEO卫星三种频率码伪距和载波相位观测值不同组合,选取B1&B2双频计算电离层延迟为最优组合,采用相位平滑伪距的方法计算电离层延迟TEC,相较其他电离层模型,该方法的优点是不会引入模型误差,可得到连续的高精度的电离层延迟监测结果。A method for using observation data of BDS GEO satellites calculate ionospheric delay is proposed. Because GEO satellites working with fixed Ionospheric Pierce Point and stationary to the ground,it cannot take into account the spatial variation when uninterrupted monitoring the ionosphere change.B1B2 dual-frequency combination is optimal through analysis of different combinations of BDS three frequencies pseudo-range and carrier-phase observation. Compared to other ionospheric model,carrier-phase smoothed pseudo-range calculation TEC can get high precision continuous monitoring results.

关 键 词：北斗系统GEO 电离层延迟 双频观测值 相位平滑伪距 

分 类 号：V557[航空宇航科学与技术—人机与环境工程]