CNES实时和存档卫星轨道/钟差产品对北斗PPP的影响分析

从使用CNES产品的北斗实时PPP用户角度出发，对比分析连续10 d的北斗实时和存档产品，并对2种产品的轨道/钟差差异及该差异对北斗PPP的影响进行研究。结果表明，2种产品的轨道差异小于1 mm，但钟差存在±0.1 ns差异；将2种产品分别应用到4个IGS MGEX测站的北斗静态PPP中发现，2种产品的差异对PPP收敛速度存在一定影响，收敛后的定位精度差异可达3 cm。因此在实际使用中，用户不能忽视CNES实时产品和存档产品的差异。

Impact Analysis of CNES Real-Time and Archival Satellite Orbit/Clock Offset Products on BDS PPP

From the perspective of CNES BDS real-time PPP users,this paper studies the orbit/clock difference between the BDS real-time and archival products for 10 consecutive days,and analyzes their impacts on BDS PPP.The results show that the orbit difference between these two products is below 1 mm,but the clock difference reaches±0.1 ns.These two products are applied to BDS static PPP of four IGS MGEX stations.It is found that the difference between the two products can impact the PPP convergence speed,and the positioning accuracy difference after convergence can reach 3 cm.Therefore,we cannot ignore the difference between CNES real-time and archival orbit/clock products.