电离层TEC演示系统的研制与实现  

Design and Realization of Ionosphere TEC DEMO

作　　者：黄智[1] 袁洪[2] 

机构地区：[1]徐州师范大学物理与电子工程系,江苏徐州221116 [2]中国科学院光电研究院,北京100190

出　　处：《计算机仿真》2011年第7期79-82,104,共5页Computer Simulation

基　　金：国家自然科学基金(40374054)

摘　　要：研究卫星信号优化电离层测量精度问题,电离层折射误差改正量TEC是卫星导航定位以及遥感、遥测等空间应用工程中备受关注的参量。现有电离层TEC现报系统,针对中国地区的细节特征和区域特性缺乏准确的现报结果,根据我国上空电离层所具有的特殊性和复杂性,提出构建适合中国区域的电离层TEC信息演示系统。利用全国地壳形变监测网的双频GPS数据,以matlabgui语言为工具,对于电离层TEC变化相对简单的中高纬地区,利用多项式拟合的单站计算方法。同时,给出以国际参考电离层IRI为传输模型。进行仿真,结果表明,系统操作方便,软件算法合理,具有较高的修正精度,为中国未来建立实用型系统具有科学的参考价值。Ionosphere delay correction is widelly measured with the total electon content（TEC）.Existing ionosphere TEC nowcasting system is difficult to characterize the TEC over china.While lays emphasis on the large-scale description of global TEC,considering the particularity and complexity of ionosphere over China,the paper constrcucted independent experimental TEC nowcasting system,which provided ionosphere correction for single-frequency users of the navigation positioning and remoted sensing systems based on satellite.Using GPS data from Chinese crust deform monitoring net and the language of matlab GUI,the paper presented the algorithm of polynomial fitting for single station located in the middle-high latitude.The emphasis was on the multi-stations technique of international reference ionosphere as transport model and latitude as weight factor.The relevant results show that the system is characteristic of convenient operation and reasonabel algorithm,which provides instructive information for the furture practical nowcasting system.

关 键 词：电离层 现报 单站 多站 精度 

分 类 号：V417.6[航空宇航科学与技术—航空宇航推进理论与工程]