Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance
Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance
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北斗空间信号用户测距误差特征及其对先进接收机自主完整性监测性能的影响
DOI：
10.3390/s18124475
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发表时间：
2018-12
期刊：
影响因子：
3.9
通讯作者：
Tinglin Li
中科院分区：
文献类型：
--
作者：
Zhipeng Wang;Wei Shao;Rui Li;Dan Song;Tinglin Li
空间信号用户范围误差（SIS URES）被假定为正态分布的上界，标准偏差由用户范围准确度（URA）表示。北斗导航卫星系统（BDS）广播URA与历史SIS URE性能不兼容，影响高级接收机自主完整性监测（ARAIM）虚警概率（Pfa）和可用性评估。这项研究比较了2013年3月1日至2017年3月1日的BDS广播和精确星历，以获得SIS URES。通过分析SIS URES的统计特性，得到了SIS URES的准确性和连续性的标准差σURE和完整性的标准差σURA。结果表明，2 m的广播σURA不能完全覆盖所有BDS卫星的SIS URES，而2.4 m的广播σURA可以覆盖所有BDS卫星的SIS URES。然后，我们使用2.4 m的σURA来评估ARAIM Pfa和可用性。结果表明，Pfa可能增加到2 × 10−5，超过其极限一个数量级。我们还考虑了地球静止轨道（GEO），倾斜地球同步轨道（IGSO）和中地球轨道（MEO）的SIS URES之间的差异。结果表明，对于性能最差的GEO卫星，由计算得到的σURE计算的Pfa值均小于完整性支持报文（ISM）中的Pfa值。由计算的σURE计算的约55% Pfa小于ISM中性能最差的IGSO卫星的Pfa。对于性能最差的MEO卫星，由计算的σURE计算的大多数Pfa值小于ISM中的Pfa。对于BDS卫星，Pfa主要受σURE的影响。当用2.4m的σURA来评估可用性时，计算的可用性低于广播σURA/σURE计算的可用性，最大退化可达25%。
Signal-In-Space User Range Errors (SIS UREs) are assumed to be overbounded by a normal distribution with a standard deviation represented by the User Range Accuracy (URA). The BeiDou Navigation Satellite System (BDS) broadcast URA is not compatible with the historical SIS URE performance that affects the Advanced Receiver Autonomous Integrity Monitoring (ARAIM) False Alert Probability (Pfa) and availability evaluation. This study compares the BDS broadcast and precise ephemeris from 1 March 2013 to 1 March 2017 to obtain SIS UREs. Through analyzing the statistical characteristics of the SIS UREs, we obtain the standard deviation σURE for the accuracy and continuity and σURA used for the integrity of the SIS UREs. The results show that the broadcast σURA of 2 m cannot completely overbound SIS UREs for all BDS satellites, but the σURA of 2.4 m can. Then, we use the σURA of 2.4 m to evaluate the ARAIM Pfa and availability. The results show that the Pfa may increase to 2 × 10−5 and exceed its limit by an order of magnitude. We also consider the differences between the SIS UREs of Geostationary Earth Orbit (GEO), Inclined Geo-Synchronous Orbit (IGSO), and Medium Earth Orbit (MEO). The results indicate that all Pfa values calculated by the computed σURE are less than the Pfa in the Integrity Support Message (ISM) for the worst-performing GEO satellite. The approximately 55% Pfa calculated by the computed σURE is less than the Pfa in ISM for the worst-performing IGSO satellite. Most Pfa values calculated by the computed σURE is less than the Pfa in the ISM for the worst-performing MEO satellite. For BDS satellites, the Pfa is mainly affected by σURE. When the σURA of 2.4 m is used to evaluate the availability, the computed availability is lower than the availability calculated by the broadcast σURA/σURE and the greatest degradation can reach 25%.
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影响因子：
3.9
作者：
Ouyang，Chenhao;Shi，Junbo;Li，Lihong
通讯作者：
Li，Lihong
DOI：
--
发表时间：
2015-10
期刊：
--
影响因子：
--
作者：
S. P. Diaz;M. Meurer;M. Rippl;B. Belabbas;M. Joerger;B. Pervan
通讯作者：
S. P. Diaz;M. Meurer;M. Rippl;B. Belabbas;M. Joerger;B. Pervan
DOI：
--
发表时间：
2016
期刊：
--
影响因子：
--
作者：
Wang Pengxu;Lv Zhiwei
通讯作者：
Wang Pengxu;Lv Zhiwei
影响因子：
--
作者：
Curtis Cohenour;F. Graas
通讯作者：
Curtis Cohenour;F. Graas
DOI：
10.1109/dasc.2015.7311356
发表时间：
2015-09
期刊：
2015 IEEE/AIAA 34th Digital Avionics Systems Conference (DASC)
影响因子：
--
作者：
Artie Dins;Ye Ping;B. Schipper
通讯作者：
Artie Dins;Ye Ping;B. Schipper