Study on Ionospheric Delay Correction in GPS Signal

摘要：

　　When the GPS CV method is used to compare long distant clocks, the ionospheric delay of the received GPS signal can lead to significant errors, and therefore, which need to be measured or corrected This paper presents three different methods used to calculate the ionospheric delay in GPS signal.By analyzing the precision of three GPS CV corrected results between National Institute of Information and Communications Technology and National Time Service Center, Chinese Academy of Science, three ionospheric delay computing methods are compared And the results show the precision of GPS CV time transfer, in which the ionospheric delay is corrected by using the double-frequency measurement.And the TEC map issued by IGS(International GPS Service) are raised by 30%~40% and 20% ~30%, respectively, compared with the precision of GPS CV time transfer, in which the ionospheric delay is corrected by using the ionospheric correction model.

关键词： GPS signal Common-View ionospheric delay

作者: Li Bian

作者单位: National Time Service Center,Chinese Academy of Sciences Key Laboratory of Time and Frequency Primary Standards,Chinese Academy of Science Xian,China

会议类型: 国际会议

会议名称: 2013 IEEE 11th International Conference on Electronic Measurement & Instruments(第十一届IEEE国际电子测量与仪器学术会议)

会议地点: 哈尔滨

会议语种:英文

页码: 79-83

在线出版日期: 2013-08-16（万方平台首次上网日期，不代表论文的发表时间）