| DOP?????GNSS????λ????????????о? |
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| 引用本文： | 曹新运,王坚,刘超.DOP?????GNSS????λ????????????о?[J].大地测量与地球动力学,2013,33(1):81-85. |
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| 作者姓名： | 曹新运 王坚 刘超 |
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| 作者单位： | 1. 中国矿业大学国土环境与灾害监测国家测绘局重点实验室,徐州,221116
2. 安徽理工大学测绘学院,淮南,232001 |
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| 基金项目： | 国家自然科学基金青年基金(40904004);国家自然科学基金(41074010);江苏省自然科学基金(BK2009099);江苏省“青蓝工程”;江苏省高校优势学科建设工程项目 |
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| 摘 要： | ????GNSSα????λ??????λ?????????????????λ????????DOP???????λ????????RDOP??????????????????????????????????仯?????????????DOP????GNSS????λ????????÷?Χ??????????????DOP??RDOP?????????仯??????????????￡????????????????????????????????????????????????DOP?????????λ????????????????????RDOP?????????λ?????????
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| 关 键 词： | GNSS DOP RDOP ????λ ?????λ |
ANALYSIS OF AVAILABILITY OF DOP TO FORECAST GNSS RELATIVE POSITIONING |
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| Cao Xinyun,Wang Jian,and Liu Chao.ANALYSIS OF AVAILABILITY OF DOP TO FORECAST GNSS RELATIVE POSITIONING[J].Journal of Geodesy and Geodynamics,2013,33(1):81-85. |
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| Authors: | Cao Xinyun Wang Jian and Liu Chao |
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| Institution: | 1)Key Laboratory for Land Environment and Disaster Monitoring of SBSM,CUMT,Xuzhou 2211162)School of Geodesy and Geomatics,Anhui University of Science and Technology,Huainan 232001 |
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| Abstract: | On the basis of principles of GNSS pseudorange single point positioning and relative positioning,the formulas of absolute positioning factor of precision DOP and relative positioning factor of precision RDOP were deduced. This paper also analyzes the relation between two factor of positioning and their variation law and give the applicability scope for using DOP to forecast the GNSS relative positioning. The result indicates that DOP and RDOP have similar variation trend, but not agreed in some part. With the increasing of the number of the observed non common view satellites and the asymmetry of geometric strength of satellite， the deviation of using DOP to forecast relative positioning would increase correspondingly. In this case, we had better choose PDOP to conduct relative positioning prediction. |
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| Keywords: | Global Navigation Satellite System（GNSS） Dilution of Precision(DOP) Relative Dilution of Precision（RDOP） relative positioning point positioning |
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