Assessment of the Contribution of QZSS Combined GPS/BeiDou Positioning in Asia-Pacific Areas
Assessment of the Contribution of QZSS Combined GPS/BeiDou Positioning in Asia-Pacific Areas
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QZSS GPS/北斗组合定位在亚太地区的贡献评估
DOI：
10.1007/978-981-13-0005-9_37
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发表时间：
2018-05
期刊：
影响因子：
--
通讯作者：
Wang Jiexian
中科院分区：
文献类型：
--
作者：
Zhang Yize;Kubo Nobuaki;Chen Junping;Wang Hu;Wang Jiexian
2017年发射了三颗QZSS卫星，这意味着2018年将建立一个四颗卫星的区域系统。毫无疑问，QZSS将在未来全球GNSS星座中发挥更重要的作用。因此，研究当前QZSS星座在定位中的重要性是十分必要的。本文分析了QZSS与现有GPS和北斗系统相结合对亚太地区可见卫星数量和PDOP（位置精度稀释）值的改善。选取9个IGS站点，对GPS、北斗和GPS + QZSS、北斗+ QZSS系统的单点定位和精确点定位性能进行评估。分析结果表明，QZSS在不同程度上提高了GPS和北斗系统的SPP性能。特别是在卫星数量减少的情况下，例如在城市地区或高程截止点较高的情况下，增加QZSS卫星后定位误差会减小，其他GNSS系统的可用性也会提高。对于动态PPP用户，QZSS还可以缩短收敛周期。同时，比较了QZSS卫星加入GPS和北斗系统后的双频和单频RTK （Real Time Kinematic）定位性能。城市环境下的运动学小车试验表明，QZSS卫星与GPS、北斗组合使用时，无论是单频用户还是双频用户，瞬时模糊度解决率都有所提高。
Three QZSS satellites are launched in 2017, which implies that a four satellites regional system is to be established in 2018. There is no doubt that QZSS will play a more important role in the future global GNSS constellations. So it is quite necessary to investigate the importance of current QZSS constellation in positioning. In this paper, the number of visible satellite and PDOP (Position Dilution of Precision) value improvement by combining QZSS with the existing GPS and BeiDou system is analyzed among Asia-Pacific areas. 9 IGS stations are selected to evaluate the performance of SPP (Single Point Positioning) and PPP (Precise Point Positioning) using GPS, BeiDou and GPS + QZSS, BeiDou + QZSS system. Analysis results show that QZSS improves SPP performance for both GPS and BeiDou at different level. Especially when the satellite number is reduced, such as in urban areas or when the elevation cutoff is high, the positioning error will reduce after adding QZSS satellite and the availability of other GNSS systems will also improves. For kinematic PPP users, QZSS could also reduce the convergence period. Meanwhile, the dual frequency and single frequency RTK (Real Time Kinematic) positioning performance is compared after adding QZSS satellite into GPS and BeiDou. Kinematic car test in urban environment shows that when combining QZSS satellite with GPS and BeiDou, the rate of instantaneous ambiguity resolution will increase for both single and dual-frequency users.
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影响因子：
4.9
作者：
Montenbruck, Oliver;Steigenberger, Peter;Hauschild, Andre
通讯作者：
Hauschild, Andre
DOI：
--
发表时间：
2014-09
期刊：
--
影响因子：
--
作者：
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通讯作者：
R. Odolinski;P. Teunissen;D. Odijk
影响因子：
4.9
作者：
Hauschild, Andre;Steigenberger, Peter;Rodriguez-Solano, Carlos
通讯作者：
Rodriguez-Solano, Carlos
影响因子：
4.9
作者：
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通讯作者：
D. Odijk;N. Nadarajah;S. Zaminpardaz;P. Teunissen
影响因子：
2.4
作者：
Yiming Quan;L. Lau;G. Roberts;Xiaolin Meng
通讯作者：
Yiming Quan;L. Lau;G. Roberts;Xiaolin Meng