BDSBAS和WAAS增强定位性能评估  

Evaluation of enhanced positioning performance of BDSBAS and WAAS

作　　者：刘京慧 王献中 李丽媛 王亮亮 温丽芳 LIU Jinghui;WANG Xianzhong;LI Liyuan;WANG Liangliang;WEN Lifang(Unicore Communications,Inc.,Beijing 100094,China)

机构地区：[1]和芯星通科技(北京)有限公司,北京100094

出　　处：《导航定位学报》2024年第3期130-136,共7页Journal of Navigation and Positioning

摘　　要：针对星基增强系统(SBAS)播发的单频增强服务电文一般仅用于增强单频定位的问题,提出一种使用单频增强电文增强双频定位的方法,推导利用单频增强信息增强单频和双频标准单点定位(SPP)的数学模型,并进一步分析北斗星基增强系统(BDSBAS)和广域增强系统(WAAS)增强性能,结果表明,使用BDSBAS和WAAS单频增强信息增强全球定位系统(GPS)L1C/A单频SPP时三维定位精度分别提升25%~50%、45%~70%,增强L1C/A+L2P双频SPP时三维定位精度分别提升10%~40%、10%~50%。Aiming at the problem that the single-frequency augmentation message broadcasted by the satellite-based augmentation system(SBAS)is generally used to enhance the single-frequency positioning,the paper proposed a method of using single-frequency augmentation message to enhance dual-frequency positioning,and derived the mathematical models of using the single-frequency augmentation information to enhance the single-frequency and dual-frequency standard point positioning(SPP),and furtherly analyzed the enhanced performances of the BeiDou satellite based augmentation system(BDSBAS)and the wide area augmentation system(WAAS).Results showed that when using BDSBAS and WAAS single-frequency augmentation information to enhance SPP,the three-dimensional accuracy of global positioning system(GPS)L1C/A single-frequency positioning would be improved by 25%~50%and 45%~70%respectively,and the three-dimensional accuracy of GPS L1C/A+L2P dual-frequency positioning would be improved by 10%~40%and 10%~50%respectively.

关 键 词：北斗星基增强系统(BDSBAS) 广域增强系统(WAAS) 单频增强信息 单频定位 双频定位 

分 类 号：P228[天文地球—大地测量学与测量工程]