Estimation of differential code biases for Beidou navigation system using multi-GNSS observations: How stable are the differential satellite and receiver code biases?
Estimation of differential code biases for Beidou navigation system using multi-GNSS observations: How stable are the differential satellite and receiver code biases?
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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？
DOI：
10.1007/s00190-015-0874-5
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发表时间：
2016-04
影响因子：
4.4
通讯作者：
Song Shuli
中科院分区：
文献类型：
--
作者：
Xue Junchen;Song Shuli
差分码偏（DCB）是高精度GNSS应用中必须准确可靠估计的重要参数。为了实现北斗导航系统（BDS）的最佳运行服务性能，对BDS卫星DCB进行持续监测和持续质量评估至关重要。在这项研究中，一个全球电离层模型的基础上构建的双系统BDS/GPS组合。对每日北斗星数据中心的DCB以及23个月的多重全球导航卫星系统观测的总电子含量进行了估算。详细分析了所得BDS DCB估计值的稳定性。结果发现，在很长一段时间内，所有卫星B1-B2 DCB的标准偏差（STD）均在0.3 ns（平均值：0.19 ns）以内，所有卫星B1-B3 DCB的STD均在0.36 ns（平均值：0.22 ns）以内。对于BDS接收器，STD大于卫星，大多数值为2 ns。不同接收机系列的DCB是不同的。比较不同时间间隔的卫星DCB的短期稳定性的统计数据表明，28天和7天间隔之间的STD差异很小，最大不超过0.06 ns。在几乎所有情况下，BDS卫星DCB在连续两天之间的差异为0.8纳秒。主要结论是，由于BDS DCB的稳定性，它们只需要偶尔的估计或校准。此外，30天平均卫星数据中心业务可以可靠地用于要求最高的工商发展服务应用。
Differential code biases (DCBs) are important parameters that must be estimated accurately and reliably for high-precision GNSS applications. For optimal operational service performance of the Beidou navigation system (BDS), continuous monitoring and constant quality assessment of the BDS satellite DCBs are crucial. In this study, a global ionospheric model was constructed based on a dual system BDS/GPS combination. Daily BDS DCBs were estimated together with the total electron content from 23 months’ multi-GNSS observations. The stability of the resulting BDS DCB estimates was analyzed in detail. It was found that over a long period, the standard deviations (STDs) for all satellite B1–B2 DCBs were within 0.3 ns (average: 0.19 ns) and for all satellite B1–B3 DCBs, the STDs were within 0.36 ns (average: 0.22 ns). For BDS receivers, the STDs were greater than for the satellites, with most values2 ns. The DCBs of different receiver families are different. Comparison of the statistics of the short-term stability of satellite DCBs over different time intervals revealed that the difference in STD between 28- and 7-day intervals was small, with a maximum not exceeding 0.06 ns. In almost all cases, the difference in BDS satellite DCBs between two consecutive days was0.8 ns. The main conclusion is that because of the stability of the BDS DCBs, they only require occasional estimation or calibration. Furthermore, the 30-day averaged satellite DCBs can be used reliably for the most demanding BDS applications.
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影响因子：
2.6
作者：
Byung-Kyu Choi;Jungho Cho;Sang Jeong Lee
通讯作者：
Byung-Kyu Choi;Jungho Cho;Sang Jeong Lee
DOI：
--
发表时间：
1993-09
期刊：
--
影响因子：
--
作者：
B. Wilson;A. Mannucci
通讯作者：
B. Wilson;A. Mannucci
影响因子：
2.6
作者：
S. Kao;Yaogang Chen;F. Ning
通讯作者：
S. Kao;Yaogang Chen;F. Ning
影响因子：
5.2
作者：
J. Juan;A. Rius;M. Hernández‐Pajares;J. Sanz
通讯作者：
J. Juan;A. Rius;M. Hernández‐Pajares;J. Sanz
影响因子：
1.6
作者：
E. Sardón;N. Zarraoa
通讯作者：
E. Sardón;N. Zarraoa