Extracting Ionosphere Scintillations Index Based on Single Frequency GPS Software Receiver
Scintillations are caused by ionospheric plasma-density irregularities and can lead to signal power fading, loss of lock of the carrier tracking loop in the GPS receiver.The traditional method of monitoring and mitigating scintillation is to transform commercial GPS receiver with modified hardware and embedded software.To better facilitate advance development GPS receiver under different condition, GPS software scintillation receiver is designed in this paper.The hardware scheme of high-speed GPS signal acquisition system is first discussed and implemented with FPGA and DSP architecture.Then, we describe receiver software processing algorithm, particularly the portion involving the scintillation signal acquisition and tracking, ionospheric scintillation index extracting and scintillation monitoring.The performance of software receiver is demonstrated under scintillation conditions.Relevant results show that software-receiver based approach can avoid weak signal loss and extract effectively ionospheric scintillation parameter compared with the traditional extracting method.Software receiver is suitable and reliable for the ionospheric scintillations monitoring, and can provide theoretical foundations and experimental preparations for future scintillation studies implemented with Chinese indigenous BeiDou-Ⅱ navigation and poisoning system.
ionospheric scintillation soft receiver acquisition tracking monitoring
Huang Zhi Yuan Hong Zuo QiYao
JiangSu normal university,Xuzhou,China,22116 Academy of Opto-electronics,Chinese academy of sciences,Beijing,China,100194
国际会议
the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))
桂林
英文
1136-1143
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）