1.一种BDS星基B2b‑PPP与RTK定位的融合与切换方法,其特征在于,包括如下步骤: 实时获取PPP‑B2b原始电文数据、卫星广播星历数据和观测数据;建立GPS/BDS‑3双系 统双频非差非组合PPP模型,基于PPP‑B2b原始电文数据、卫星广播星历数据和观测数据,通
如精密轨道为相位中心产品、BDS-3基准频率为B3I及PPP-B2b服务范围等;还系统全面地评估了PPP-B2b精密产品精度与用户定位性能,如空间信号测距误差(SISRE)的均方根误差(RMS)为分米级与标准差(STD)为厘米级、定位精度为静态厘米级与动...
基于精密单点定位(PPP)原理及BDS-3 PPP-B2b电文改正模型,分析在使用电文改正信息进行PPP过程中需要注意的2个改正参数间匹配性问题,以及静态、仿动态条件下经过PPP-B2b电文信息改正后B1C+B2a、B1I+B3I模式定位服务性能。结果表明,在静态条件下,2种定位模式水平、高程方向定位精度均优于11 cm;仿动态条件下,水平、...
BDS-3 PPP/INS紧组合周跳探测及修复方法 针对载波相位观测值在实际测量中存在整周数跳变的问题,提出一种BDS-3PPP/INS紧组合周跳探测及修复方法:在北斗三号卫星导航系统(BDS-3)精密单点定位(PPP)/惯性导航系统... 宋德彪,孙付平,肖凯,... - 《导航定位学报》 被引量: 0发表: 2023年 北斗/INS紧组合的...
(GNSS)监测站对B2b的URA参数进行重估计.实验结果表明:精化后的URA能显著提升B2b-PPP的服务性能.相比于仅考虑观测噪声和高度角的随机模型,使用精化后的URA作为随机模型,动态和静态定位模式下的收敛时间提升分别达到18.9%,14.5%;收敛后定位精度提升分别达到11.2%,8.9%.在此基础上,进一步结合北斗卫星导航系统(BDS)短...
一种BDS-3 PPP-B2b/INS紧组合导航方法.pdf,本发明涉及一种BDS‑3PPP‑B2b/INS紧组合导航方法,属于GNSS/INS组合导航技术领域。本发明首先利用BDS‑3的实时改正数和广播星历,恢复出实时精密卫星轨道、钟差,对BDS‑3和GPS观测数据进行改正;然后对INS输出的数据进行
The average RMS was found to be 1.0m for GPS in PPP-B2b and 0.62m for GPS in Galileo HAS. For BDS in PPP-B2b, the average RMS was 0.67m, while for Galileo in HAS, it was 0.18m. Then, the accuracy of PPP-B2b and Galileo HAS products were validated using both static and ...
The time-varying attributes of these corrections of BDS and GPS are evaluated, and the integrity and stability of the PPP service were analyzed. The results show the PPP-B2b signal can stably provide PPP services for satellites in the Asia-Pacific region, including centimeter to decimeter-level ...
PPP-B2b service of China’s BDS is a satellite-based service. The observations from the densified ground tracking network are collected and sent to the ground operation control center, where the precise satellite orbits and clock offsets of BDS and GPS constellations are calculated, and then up...
A new Precise Point Positioning (PPP) service, called the PPP-B2b service, has been implemented in the BeiDou-3 Navigation Satellite System (BDS-3), which brings new opportunities for time transfer. However, the solution using the traditional PPP method with the PPP-B2b correction still absorbs...