IRNSS/NavIC and GPS: a single- and dual-system L5 analysis
IRNSS/NavIC and GPS: a single- and dual-system L5 analysis
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DOI：
10.1007/s00190-016-0996-4
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发表时间：
2017-02
影响因子：
4.4
通讯作者：
S. Zaminpardaz;P. Teunissen;N. Nadarajah
中科院分区：
文献类型：
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作者：
S. Zaminpardaz;P. Teunissen;N. Nadarajah
印度区域导航卫星系统（IRNSS）最近（2016年5月）开始全面运行。在这方面的贡献，作为一个独立的系统，并与GPS相结合，全面运作的IRNSS，我们提供了第一次评估的L5整周模糊度的解决方案和定位性能。虽然我们的实证分析是基于两个JAVAD接收器在科廷大学，珀斯，澳大利亚收集的数据，我们的正式分析进行了各种陆上位置的IRNSS服务区。我们研究的噪声特性（载噪密度，测量精度，时间相关性），整周模糊度的解决方案的性能（成功率和模糊度精度稀释），和定位性能（模糊度浮动和模糊度固定）。结果表明，我们的经验结果是一致的，他们的正式同行和GPS的L5数据有一个较低的噪声水平比IRNSS的L5数据，特别是在代码数据的情况下。我们评估的基础模型从独立的IRNSS（L5）到IRNSSGPS（L5），从无约束到高度约束，从运动学到静态。将IRNSS的L5数据与GPS相结合，可以显著提高模糊度解算和定位性能。
The Indian Regional Navigation Satellite System (IRNSS) has recently (May 2016) become fully operational. In this contribution, for the fully operational IRNSS as a stand-alone system and also in combination with GPS, we provide a first assessment of L5 integer ambiguity resolution and positioning performance. While our empirical analyses are based on the data collected by two JAVAD receivers at Curtin University, Perth, Australia, our formal analyses are carried out for various onshore locations within the IRNSS service area. We study the noise characteristics (carrier-to-noise density, measurement precision, time correlation), the integer ambiguity resolution performance (success rates and ambiguity dilution of precision), and the positioning performance (ambiguity float and ambiguity fixed). The results show that our empirical outcomes are consistent with their formal counterparts and that the GPS L5-data have a lower noise level than that of IRNSS L5-data, particularly in case of the code data. The underlying model in our assessments varies from stand-alone IRNSS (L5) to IRNSSGPS (L5), from unconstrained to height-constrained and from kinematic to static. Significant improvements in ambiguity resolution and positioning performance are achievable upon integrating L5-data of IRNSS with GPS.