Carrier frequency disturbance distributions on GPS during equatorial ionospheric scintillation

作     者：ZHU Xuefen LIN Mengying CHEN Xin CHEN Xiyuan ZHU Xuefen;LIN Mengying;CHEN Xin;CHEN Xiyuan

作者机构：Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology of Ministry of EducationSchool of Instrument Science and EngineeringSoutheast UniversityNanjing 210096China School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术（英文版）)

年 卷 期：2020年第31卷第6期

页      面：1308-1317页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 070802[理学-空间物理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0802[工学-机械工程] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：This work was supported by the National Key Research and Development Plan of China(2018YFB0505103) the National Natural Science Foundation of China(61873064) the Science and Technology Project of State Grid Corporation of China(SGSHJX00KXJS1901531). 

主　　题：ionospheric scintillation carrier frequency disturbance probability distribution bandwidth 

摘      要：In the equatorial region,deep amplitude fading in global positioning system(GPS)signals frequently occurs during the strong ionospheric scintillation,it can lead to the loss of lock in GPS carrier tracking loops,and result in increased positioning error and even navigation interruption.The relationships between amplitude scintillation indices and detrended carrier frequency are investigated,based on GPS L1 C/A signals during the last peak of the solar cycle at the low latitude site of São Josédos Campos,Brazil(23.2S,45.9W)from 2013 to 2015.Corresponding mathematic model of the probability distribution function is built for the first time to provide statistical analysis on the above relationships.The results show that the standard carrier frequencies reveal an almost linear relation with the amplitude scintillation indices.Moreover,the frequency widths of detrended frequency are proportional to levels of amplitude scintillation when the value of the peak probability is lower than the corresponding boundary.A conclusion can be drawn that different levels of amplitude scintillation will influence the fluctuation of the carrier frequency.The analysis will provide useful guidance to set the receiver’s bandwidth with respect to the different scintillation levels and design the advanced tracking algorithms to improve the robustness and precision of the GPS receiver.