【作者】 何旭蕾； 巴晓辉； 刘学勇； 杨颖； 李健； 陈杰；

【Author】 He Xulei;Ba Xiaohui;Liu Xueyong;Yang Ying;Li Jian;Chen Jie;Institute of Microelectronics of Chinese Academy of Sciences, IMECAS;University of Chinese Academy of Sciences,UCAS;

【机构】 中国科学院微电子研究所； 中国科学院大学；

【摘要】 为了进行高精度的卫星定位,准天顶卫星系统(Quasi-Zenith Satellite System,QZSS)播发增强信号L6,分为L6D和L6E,其中厘米级增强服务(Centimeter Level Augmentation Service,CLAS)由L6D信号提供,它播发状态空间信息(State Space Representation,SSR),包含轨道纠正、时钟纠正、卫星码偏差、相位偏差等纠正信息,可用于RTK-PPP(Real-Time Kinematic-Precise Point Positioning)算法,提高定位精度。日本开发了精准轨道和星钟估计系统,称为MADOCA(Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis)。MADOCA提供的信息通过L6E信号播发,也可以从互联网获取。L6D主要服务于日本本土的用户,L6E可服务于全球用户。本文根据L6信号的接口规范文件(Interface Specification,IS)对天空中QZSS卫星的L6电文进行解析,并对QZSS官方网站和MADOCA网站提供的数据进行解析。结果表明L6D信号提供GPS、Galileo和QZSS系统的修正信息,包含轨道、时钟、码偏差、相位偏差、电离层和对流层修正以及URA等信息。L6E信号提供GPS、GLONASS、QZSS系统的轨道、时钟偏差和包括BDS系统在内的高速钟差纠正等信息。更多还原

【Abstract】 In order to perform high-precision satellite positioning, the Quasi-Zenith Satellite System(QZSS) broadcasts the enhanced signal L6, which is divided into L6D and L6E. The centimeter level augmentation service(CLAS) is provided by the L6D signal, It broadcasts state space representation(SSR), including orbit correction, clock correction, satellite code bias, phase bias and other correction information, which can be used in RTK-PPP(Real-Time Kinematic-Precise Point Positioning) algorithm to improve precision of position. Japan has developed the precision orbit and clock estimation system which called MADOCA(Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis). The information provided by MADOCA is broadcasted through L6E signals or can be obtained from the Internet. L6D mainly serves users in Japan, and L6E can serve global users. This article analyzes the L6 message of the QZSS satellites in the sky according to the Interface Specification(IS) of the L6 signal, and analyzes the data provided by the official website of QZSS and MADOCA. The results show that the L6D signal provides correction information for GPS, Galileo, and QZSS systems, including the correction of orbit and clock, the bias of code and phase and ionospheric correction and so on. The L6E signal provides the correction of orbit and clock of GPS, GLONASS, QZSS system and high rate clock correction including BDS system.更多还原