摘要
我国北斗三号卫星导航系统(BDS-3)的建设已基本完成,因而,充分利用当前BDS-3进行精密单点定位(PPP)的时间传递亟需深入研究.本文从两方面来充分研究BDS-3 PPP时间传递:1)北斗二号卫星导航系统(BDS-2)、BDS-3和BDS-2+BDS-3 PPP时间传递;2)钟模型约束的BDS-3 PPP时间传递.试验结果表明:相比BDS-2 PPP,BDS-3和BDS-2+BDS-3 PPP结果平滑残差的均方根(RMS)值可减少约为34.5%和38.23%,960 s的稳定度分别提高35.81%和37.75%;相比传统的白噪声(WN)模型,基于钟模型的BDS-3和BDS-2+BDS-3 PPP时间传递所得平滑残差RMS值分别减少65.17%和74.42%;频率稳定度最大可提高80%.
The construction of China ’s BeiDou-3 Navigation Satellite System(BDS-3) has been basically completed.Therefore,full use of the current BDS-3 satellite for precise point positioning(PPP) time transfer requires urgent research.This article analyzes BDS-3 PPP time transfer in two aspects.1) BeiDou-2 Navigation Satellite System(BDS-2),BDS-3 and BDS-2+BDS-3 PPP time transfer.2) Clock model constrained BDS-3 PPP time transfer.The results show that the root mean squares(RMS) values of smoothed residual value obtained by BDS-3 and BDS-2+BDS-3 PPP can be reduced by 34.5% and 38.23%,the frequency stability of 960 s is increased by 35.81% and 37.75% respectively,compared with BDS-2 PPP;compared with the traditional white noise model,the RMS values of the smoothed residual obtained by BDS-3 and BDS-2+BDS-3 PPP time transfer with the clock model is reduced by 65.17% and 74.42%;in addition,frequency stability can be increased up to 80%.
作者
翟宏亮
王胜利
ZHAI Hongliang;WANG Shengli(China Coal Technology and Engineering Group Nanjing Design and Research Institute Co.,Ltd.,Nanjing 211800,China;College of Ocean Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China)
出处
《全球定位系统》
CSCD
2022年第4期31-38,共8页
Gnss World of China
基金
中煤科工集团南京设计院有限公司自立科研项目(ZL21-KY02)。
