| 北斗二号对北斗三号伪距单点定位精度影响分析 |
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| 引用本文： | 王汉民.北斗二号对北斗三号伪距单点定位精度影响分析[J].全球定位系统,2021,46(2):44-48. |
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| 作者姓名： | 王汉民 |
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| 作者单位： | 中陕核工业集团二一四大队有限公司，西安 710000 |
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| 摘 要： | 针对当前BDS-2/BDS-3组合定位性能，基于国际GNSS服务(IGS)跟踪站对BDS-2/BDS-3的组合定位实测数据，分析了北斗二号(BDS-2)不同类型卫星对北斗三号(BDS-3)卫星B1I、B3I与B1I/B3I双频组合伪距单点定位精度的影响. 经研究发现，BDS-2不同类型星座卫星都能有效改善BDS-3卫星可见数与卫星空间几何构型，地球静止轨道(GEO)卫星、倾斜地球同步轨道(IGSO)卫星、中圆地球轨道(MEO)卫星使BDS-3单频和双频伪距单点定位精度的提升在20%以内，而全部BDS-2卫星使BDS-3单频和双频伪距单点定位精度的提升在30%以内，整体提升关系为:BDS-2全部卫星>IGSO卫星>GEO卫星>MEO卫星.
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| 关 键 词： | 北斗二号(BDS-2) 北斗三号(BDS-3) GEO/IGSO/MEO 伪距单点定位 |
| 收稿时间： | 2020-08-25 |
Analysis of the influence of BDS-2 constellation on BDS-3 pseudo-range single point positioning accuracy |
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| Institution: | China Shaanxi Nuclear Industry Group 214 Brigade Co., Ltd., Xi’an 710000, China |
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| Abstract: | In view of the current BDS-2/BDS-3 integrated positioning performance, this paper analyzes the impact of different types of BDS-2 satellites on the accuracy of B1I, B3I, B1I/B3I pseudo range single point positioning accuracy of BDS-2/BDS-3 tracking station. It is found that different types of BDS-2 constellation satellites can effectively improve the visibility and geometry of BDS-3 satellite. GEO IGSO and MEO can improve BDS-3 single frequency and dual frequency pseudo range single point positioning accuracy within 20%, while all BDS-2 satellites can improve BDS-3 single frequency and dual frequency pseudo range single point positioning accuracy within 30%. The overall improvement relationship is all BDS-2 satellites > IGSO > GEO > MEO. |
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