A modified carrier-to-code leveling method for retrieving ionospheric observables and detecting short-term temporal variability of receiver differential code biases

A modified carrier-to-code leveling method for retrieving ionospheric observables and detecting short-term temporal variability of receiver differential code biases
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一种改进的载波到码调平方法,用于检索电离层可观测值并检测接收机差分码偏差的短期时间变化

DOI:
10.1007/s00190-018-1135-1
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发表时间:
2018
期刊:
影响因子:
4.4
通讯作者:
Li Min
Li Min
中科院分区:
地球科学1区
文献类型:
--
作者:
Zhang Baocheng;Teunissen Peter J. G.;Yuan Yunbin;Zhang Xiao;Li Min

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利用全球定位系统对电离层进行遥感包括两个连续的任务,即电离层观测数据的检索和电离层参数的估计。长期以来,一个突出的误差来源被认为是接收器差分码偏差(rDCB)的短期变异性。通过假设rdbb在时间上不链接,我们修改了通常用于完成第一项任务的载波到代码均衡(CCL)方法。除了电离层观测值受参考历元的rDCB影响外,修正CCL (MCCL)还可以作为副产物提供相对于参考历元的rDCB偏移量。由此产生了两个后果。首先,MCCL能够从电离层观测中排除时变rDCB的影响,这反过来又提高了感兴趣的电离层参数的质量。其次,MCCL作为一种检测单个接收机的rDCB经历历元间波动的手段具有很大的潜力。
Sensing the ionosphere with the global positioning system involves two sequential tasks, namely the ionospheric observable retrieval and the ionospheric parameter estimation. A prominent source of error has long been identified as short-term variability in receiver differential code bias (rDCB). We modify the carrier-to-code leveling (CCL), a method commonly used to accomplish the first task, through assuming rDCB to be unlinked in time. Aside from the ionospheric observables, which are affected by, among others, the rDCB at one reference epoch, the Modified CCL (MCCL) can also provide the rDCB offsets with respect to the reference epoch as by-products. Two consequences arise. First, MCCL is capable of excluding the effects of time-varying rDCB from the ionospheric observables, which, in turn, improves the quality of ionospheric parameters of interest. Second, MCCL has significant potential as a means to detect between-epoch fluctuations experienced by rDCB of a single receiver.
使用多 GNSS 观测估计北斗导航系统差分码偏差:卫星和接收机差分码偏差的稳定性如何?
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