Combined GPS plus BDS for short to long baseline RTK positioning
Combined GPS plus BDS for short to long baseline RTK positioning
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DOI：
10.1088/0957-0233/26/4/045801
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发表时间：
2015-04-01
影响因子：
2.4
通讯作者：
Odijk, D.
中科院分区：
文献类型：
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作者：
Odolinski, R.;Teunissen, P. J. G.;Odijk, D.
北斗卫星导航系统已在亚太地区全面投入使用，评估北斗系统与全球定位系统（GPS）结合带来的价值具有重要意义。在这篇文章中，我们将研究短、中、长单基线实时运动学（RTK）定位性能。短基线是指当两个接收机之间的距离最多为几公里时，可以假设电离层和对流层的相对倾斜延迟不存在，而中等基线是指电离层延迟的不确定性可以可靠地模拟为基线长度的函数。对于长基线，我们认为有必要将电离层延迟和（湿）天顶对流层延迟（ZTD）作为完全未知的参数化。全球导航卫星系统的真实数据是在澳大利亚的珀斯收集的。它将表明，结合这两个系统允许使用高于习惯的高度截止角。在卫星能见度有限的环境中，如露天矿山或城市峡谷，这一点尤其有益。
The BeiDou Navigation Satellite System (BDS) has become fully operational in the Asia-Pacific region and it is of importance to evaluate what BDS brings when combined with the Global Positioning System (GPS). In this contribution we will look at the short, medium and long single-baseline real-time kinematic (RTK) positioning performance. Short baseline refers to when the distance between the two receivers is at most a few kilometers so that the relative slant ionospheric and tropospheric delays can be assumed absent, whereas with medium baseline we refer to when the uncertainty of these ionospheric delays can reliably be modeled as a function of the baseline length. With long baseline we refer to the necessity to parameterize the ionospheric delays and (wet) Zenith Tropospheric Delay (ZTD) as completely unknown. The GNSS real data are collected in Perth, Australia. It will be shown that combining the two systems allows for the use of higher than customary elevation cut-off angles. This can be of particular benefit in environments with restricted satellite visibility such as in open pit mines or urban canyons.