论文标题
beidou-3轨道和时钟质量
BeiDou-3 orbit and clock quality of the IGS Multi-GNSS Pilot Project
论文作者
论文摘要
在国际GNSS服务（IGS）的多GNSS试点项目（MGEX）中，Beidou-3全球导航卫星系统（BDS-3）的精确轨道和时钟产品通常由总共五个分析中心生成。审查了单个产品的处理标准和特定特性，并通过直接比较，卫星激光范围（SLR）残差，时钟稳定性分析和精确的点定位解决方案来评估BDS-3轨道和时钟产品性能。通过空间空间范围误差评估的轨道一致性在中等地球轨道卫星的4-8 cm水平上，而SLR残差的RMS值在3至9 cm之间。时钟分析揭示了与太阳辐射压力建模缺陷的所有AC相关的太阳在轨道平面以上的升高有关的疗效效应。然而，使用BDS-3 MGEX轨道和时钟产品的精确点定位导致3D RMS值在7至8 mm之间。
Within the Multi-GNSS Pilot Project (MGEX) of the International GNSS Service (IGS), precise orbit and clock products for the BeiDou-3 global navigation satellite system (BDS-3) are routinely generated by a total of five analysis centers. The processing standards and specific properties of the individual products are reviewed and the BDS-3 orbit and clock product performance is assessed through direct inter-comparison, satellite laser ranging (SLR) residuals, clock stability analysis, and precise point positioning solutions. The orbit consistency evaluated by the signal-in-space range error is on the level of 4-8 cm for the medium Earth orbit satellites whereas SLR residuals have RMS values between 3 and 9 cm. The clock analysis reveals sytematic effects related to the elevation of the Sun above the orbital plane for all ACs pointing to deficiencies in solar radiation pressure modeling. Nevertheless, precise point positioning with the BDS-3 MGEX orbit and clock products results in 3D RMS values between 7 and 8 mm.
