Single-frequency Ionosphere-free Precise Point Positioning Using Combined GPS and GLONASS Observations
Single-frequency Ionosphere-free Precise Point Positioning Using Combined GPS and GLONASS Observations
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使用 GPS 和 GLONASS 观测相结合的单频无电离层精确单点定位
DOI：
10.1017/s0373463313000039
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发表时间：
2013-05
影响因子：
2.4
通讯作者：
Luo, Xiaomin
中科院分区：
文献类型：
--
作者：
Cai, Changsheng;Liu, Zhizhao;Luo, Xiaomin
近年来，使用全球导航卫星系统（GNSS）的单频精密单点定位（PPP）由于其低成本和大量用户而吸引了越来越多的兴趣。目前，单频PPP技术主要使用GPS观测来实现。为了提高定位精度和减少收敛时间，我们提出了组合GPS/GLONASS单频（GGSF）PPP方法。该方法是基于群和相位电离层校正（GRAPHIC），以消除电离层的影响。使用静态和动态数据集以及不同类型的精确卫星轨道和时钟校正数据测试了GGSF PPP的性能，并与仅使用GPS和仅使用GLONASS的PPP解决方案进行了比较。结果表明，与最终产品相比，使用快速/超快速产品时，GGSF PPP的准确度降低了几厘米。对于静态GGSF PPP，位置滤波器通常分别在东、北和上方向上收敛于71分、33分和59分。在东、北、上三个方向上，相应的定位精度分别为0.057、0.028和0.121m。与仅使用全球定位系统或仅使用全球轨道导航卫星系统的单频PPP相比，定位精度和收敛时间都提高了约30%。进行了GGSF PPP运动学测试，结果表明，通过整合GPS和GLONASS信号，PPP解决方案的准确性和可靠性得到了更大的提高。
Single-frequency Precise Point Positioning (PPP) using a Global Navigation Satellite System (GNSS) has been attracting increasing interest in recent years due to its low cost and large number of users. Currently, the single-frequency PPP technique is mainly implemented using GPS observations. In order to improve the positioning accuracy and reduce the convergence time, we propose the combined GPS/GLONASS Single-Frequency (GGSF) PPP approach. The approach is based on the GRoup And PHase Ionospheric Correction (GRAPHIC) to remove the ionospheric effect. The performance of the GGSF PPP was tested using both static and kinematic datasets as well as different types of precise satellite orbit and clock correction data, and compared with GPS-only and GLONASS-only PPP solutions. The results show that the GGSF PPP accuracy degrades by a few centimetres using rapid/ultra-rapid products compared with final products. For the static GGSF PPP, the position filter typically converges at 71, 33 and 59 minutes in the East, North and Up directions, respectively. The corresponding positioning accuracies are 0·057, 0·028 and 0·121 m in the East, North and Up directions. Both positioning accuracy and convergence time have been improved by approximately 30% in comparison to the results from GPS-only or GLONASS-only single-frequency PPP. A kinematic GGSF PPP test was conducted and the results illustrate even more significant benefits of increased accuracy and reliability of PPP solutions by integrating GPS and GLONASS signals.
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影响因子：
2.6
作者：
H. Bock;A. Jäggi;R. Dach;S. Schaer;G. Beutler
通讯作者：
H. Bock;A. Jäggi;R. Dach;S. Schaer;G. Beutler
影响因子：
4.9
作者：
R. Bree;C. Tiberius
通讯作者：
R. Bree;C. Tiberius
DOI：
--
发表时间：
2007-09
期刊：
--
影响因子：
--
作者：
Changsheng Cai;Yang Gao
通讯作者：
Changsheng Cai;Yang Gao
DOI：
--
发表时间：
2009-09
期刊：
--
影响因子：
--
作者：
R. Piriz;D. Calle;A. Mozo;P. Navarro;D. Rodríguez;G. Tobías
通讯作者：
R. Piriz;D. Calle;A. Mozo;P. Navarro;D. Rodríguez;G. Tobías
DOI：
--
发表时间：
2008-09
期刊：
--
影响因子：
--
作者：
A. Hesselbarth;L. Wanninger
通讯作者：
A. Hesselbarth;L. Wanninger