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昆明冶金高等专科学校学报 ›› 2025, Vol. 41 ›› Issue (3): 35-.DOI: 10.3969/j.issn.1009-0479.2025.03.006

• 资源开发与测绘 • 上一篇    下一篇

IGSO卫星对 BDS3对流层参数估计的影响

  

  1. 广西壮族自治区水文地质工程地质队,广西 柳州 52000
  • 收稿日期:2024-09-23 出版日期:2025-06-07 发布日期:2025-09-23
  • 作者简介:龙凤婕 (1997-),女,广西柳州人,助理工程师,工学学士,主要从事大地测量研究。
  • 基金资助:
    国家自然科学基金 “区域安全公正空间识别、社会生态机制与调控:基于生态系统服务供需关系视角” (42271106);国家自然科学基金 “不同类型区域农村宅基地利用效率:空间分异、驱动机理与优化机制” (42471301)。

Effects of BDS-3 IGSO Satellites on Tropospheric Parameter Estimation

  1. Team of Hydrogeology and Engineer Geology of Guangxi, Liuzhou 520001, Guangxi, China
  • Received:2024-09-23 Online:2025-06-07 Published:2025-09-23

摘要: 倾斜地球同步轨道 (inclinedgeosynchronousorbit,IGSO)卫星是北斗三号卫星导航系统 (BeiDou3nav igationsatellitesystem,BDS3)重要组成部分之一,具有信号抗遮挡能力强的特点,尤其在低纬度地区,其性能 优势明显。为了研究 IGSO卫星在对流层参数估计的影响,首先,选择亚太地区的 6个多模全球卫星导航系统 (globalnavigationsatellitesystem,GNSS) 实 验 跟 踪 网 (multiGNSSexperiment,MGEX) 测 站。其 次,通 过 GAMIT1071分别研究了太阳活动低水平时不同截止高度角 (elevationmaskangle,EMA)以及太阳活动高水平 时 IGSO卫星在对流层参数估计的影响。最后,基于不同太阳活动水平和 EMA进行划分,并探讨其成因。实验 结果表明:太阳活动低水平,EMA的范围在 10°以内时,IGSO卫星在对流层天顶湿延迟 (zenithwetdelay, ZWD),可降水量 (precipitablewater,PW),南北梯度 (northsouthgradient,NSgrad)和东西梯度 (eastwestgra dient,EWgrad)的影响最大分别达到 2070mm、335mm、3012mm和 3189mm;EMA的范围介于 10~20°时, IGSO卫星在对流层估计产生的影响与 EMA呈现正相关。太阳活动高水平,EMA为 10°时,IGSO卫星在对流层 参数估计产生了更大影响,其中,对流层 ZWD、PW、NSgrad和 EWgrad的影响最大分别达到 3860mm、623mm、 5357mm和 5320mm;实验结果进一步表明:IGSO卫星在夜晚对流层参数估计的影响远高于白天,且在低纬 度地区的影响高于高纬度地区。

关键词: IGSO卫星, 太阳活动水平, 截止高度角, 对流层参数估计

Abstract:  Inclined geosynchronous orbit ( IGS0 ) satellite is one of the important components of BeiDou-3 Navigation Satellite System ( BDS-3 ), with strong signal resistance and occlusion ability, especially inlow latitudes , its performance advantages are obvious. To study the influence of IGS0 satellites on tropospheric parameter estimation, firstly, six MGEX (multi-GNSS experiment) tracking stations in the Asia-Pacific region were selected. Secondly, GAMIT10.71 was used to study the effects of different elevationmask angle ( EMA) at low levels of solar activity and the estimation of tropospheric parameters of IGSOsatellites at high levels of solar activity. Finally, it is divided based on different solar activity levels andEMAs, and its causes are discussed. The experimental results show that when the solar activity level islow and the EMA range is within 10°, the IGS0 satellite has the greatest influence of zenith wet delay(ZWD), precipitable water (PW), north-south gradient ( NS) and east-west gradient (Ew ), re-spectively 20. 70 mm, 3. 35 mm, 30. 12 mm and 31.89 mm; When EMAs range from 10 ~20°, the im-pact of lGS0 satellites on tropospheric estimation is positively correlated with EMA. At high levels of so-lar activity and an EMA of 10°, IGS0 satellites have a greater impact on the estimation of troposphericparameters, with the maximum influence of tropospheric ZWD, Pw, NS.. and EW reaching38.60 mm, 6. 23 mm, 53. 57 mm and 53. 20 mm, respectively. The experimental results further showthat the influence of the lGS0 satellite on the estimation of tropospheric parameters at night is much high-er than during the day, and the effect is higher at low latitudes than in high latitudes.

Key words: inclined geosynchronous orbit satellites, solar activity, elevation mask angle, troposphericparameter estimation