Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer
Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer
复制标题
精密单点定位（PPP）国际时间传递中GLONASS异频码偏差的考虑
DOI：
10.3390/app8081254
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发表时间：
2018-07
影响因子：
2.7
通讯作者：
Yang Xuhai
中科院分区：
文献类型：
--
作者：
Ge Yulong;Qin WeiJin;Cao Xinyun;Zhou Feng;Wang Shengli;Yang Xuhai
由于频分多址技术的应用，基于全球导航卫星系统（GLONASS）精密单点定位（PPP）的国际时间传递会受到频间码差（IFCB）的影响。这项工作旨在深入了解GLONASS IFCB对基于仅GLONASS PPP的国际时间传递的影响。通过重新参数化处理，提出了三种IFCB处理方案：忽略IFCB、估计每个GLONASS频率数的IFCB和估计每个GLONASS卫星的IFCB。在71天内（DOY 227-297，2017）从全球39个站点收集的观测数据被专门处理。出于比较的原因，仅使用全球定位系统的公私伙伴关系解决方案被视为参考值。然后分析了从仅使用全球定位系统和全球轨道导航卫星系统的PPP解决方案中得出的时钟差。实验结果表明，考虑GLONASS IFCB可以减少标准偏差（STD）的时钟差相同的接收机类型和混合接收机类型，其中减少从3.3%到62.6%。此外，与忽略IFCB相比，在坐标固定模式下，估计每颗GLONASS卫星IFCB的钟差STD分别在0.30 ~ 0.20 ns和0.40 ~ 0.35 ns范围内降低了30%和10%以上。此外，还评估了三个国际GNSS服务（IGS）分析中心的不同精密产品。即使在GLONASS卫星时钟估计中采用了不同的IFCB处理方案，我们的数值计算结果表明，在估计每颗GLONASS卫星IFCB的基础上进行的国际时间传递优于其他两种处理方案。为了实现仅基于全球轨道导航卫星系统的高精度PPP国际时间传递，强烈建议估算每颗全球轨道导航卫星系统卫星的IFCB。
International time transfer based on Global Navigation Satellite System (GLONASS) precise point positioning (PPP) is influenced by inter-frequency code biases (IFCBs) because of the application of frequency division multiple access technique. This work seeks to gain insight into the influence of GLONASS IFCBs on international time transfer based on GLONASS-only PPP. With a re-parameterization process, three IFCB handling schemes are proposed: neglecting IFCBs, estimating IFCB for each GLONASS frequency number, and estimating IFCB for each GLONASS satellite. Observation data collected from 39 globally distributed stations in a 71-day period (DOY 227–297, 2017) was exclusively processed. For the comparison reason, Global Positioning System (GPS)-only PPP solutions were regarded as reference values. The clock differences derived from GPS- and GLONASS-only PPP solutions were then analyzed. The experimental results demonstrated that considering GLONASS IFCBs could reduce standard deviation (STD) of the clock differences for both identical receiver types and mixed receiver types, of which reduction was from 3.3% to 62.6%. Furthermore, compared with neglecting IFCBs, STD of the clock differences with estimating IFCB for each GLONASS satellite in coordinate-fixed mode was reduced by more than 30% from 0.30 to 0.20 ns, and by 10% from 0.40 to 0.35 ns, for 1-day arc solutions and 10-day arc solutions, respectively. Moreover, different precise products from three International GNSS Service (IGS) analysis centers were also evaluated. Even though different IFCB handling schemes were adopted in GLONASS satellite clock estimation, our numerical results showed that international time transfer on the basis of estimating IFCB for each GLONASS satellite better than the other two processing schemes. To achieve high-precision GLONASS-only PPP-based international time transfer, it is highly recommended to estimate IFCB for each GLONASS satellite.
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影响因子：
1.4
作者：
David W A;Marc A. Weiss
通讯作者：
David W A;Marc A. Weiss
DOI：
--
发表时间：
1992
期刊：
--
影响因子：
--
作者：
Jiun-Tsong Wu;Sien-Chong Wu;G. Hajj;W. Bertiger;S. Lichten
通讯作者：
Jiun-Tsong Wu;Sien-Chong Wu;G. Hajj;W. Bertiger;S. Lichten
影响因子：
2.6
作者：
Defraigne, Pascale;Baire, Quentin
通讯作者：
Baire, Quentin
基于GLONASS的精密单点定位和性能分析
影响因子：
2.6
作者：
Cai, Changsheng;Gao, Yang
通讯作者：
Gao, Yang
DOI：
10.7892/boris.72297
发表时间：
2015-11
期刊：
--
影响因子：
--
作者：
R. Dach;S. Lutz;P. Walser;P. Fridez
通讯作者：
R. Dach;S. Lutz;P. Walser;P. Fridez