BDS-2/BDS-3/QZSS组合短基线相对定位精度分析 |
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引用本文: | 郑磊,刘成.BDS-2/BDS-3/QZSS组合短基线相对定位精度分析[J].全球定位系统,2020,45(5):57-61. |
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作者姓名: | 郑磊 刘成 |
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作者单位: | 西南交通大学希望学院 ,四川成都 610000;西南交通大学希望学院 ,四川成都 610000 |
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基金项目: | 九寨沟地区震后滑坡监测预警研究 |
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摘 要: | 针对日本准天顶卫星系统(QZSS)对北斗二号(BDS-2)和北斗三号(BDS-3)短基线相对定位性能的影响,本文基于国际GNSS服务(IGS)跟踪站组成的5 km和10km两条短基线,分析了QZSS、BDS-2、BDS-3不同组合短基线相对定位精度.经研究发现,QZSS能有效改善BDS-2和BDS-3卫星可见数与卫星空间几何构型,而BDS-2/BDS-3组合下的卫星可见数与卫星空间几何构型优于任一单系统.在定位精度方面,QZSS与数据缺失情况下BDS-3组合定位精度与BDS-2相当,同时QZSS能有效提升BDS-2和BDS-2/BDS-3相对定位精度,而BDS-3对BDS-2定位精度的提升要优于QZSS.
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关 键 词: | BDS-2 BDS-3 QZSS 短基线 相对定位 |
Relative positioning accuracy analysis of BDS-2/BDS-3/QZSS combination short baseline |
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Affiliation: | Hope College of Southwest Jiaotong University,Chengdu 610000,China |
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Abstract: | In view of the impact of QZSS on the relative positioning performance of BDS-2 and BDS-3 short baselines,this paper analyzes the short baselines of different combinations of QZSS,BDS-2 and BDS-3 based on the 5km and 10km short baselines composed of IGS tracking stations relative positioning accuracy.It is found that QZSS can effectively improve the BDS-2 and BDS-3 satellite visibility and satellite space geometry,while the satellite visibility and satellite space geometry of BDS-2/BDS-3 combination is superior to any single system.In terms of positioning accuracy,the combined positioning accuracy of BDS-3 and QDSS is equivalent to BDS-2 in the case of missing data.At the same time.QZSS can effectively improve the relative positioning accuracy of BDS-2 and BDS-2/BDS-3.while BDS-3 shows better performance than QZSS in improvement of positioning accuracy of BDS-2. |
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