| GPS /VRS???????????????????о? |
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| 引用本文： | 李成钢,黄丁发,周东卫,周乐韬,熊永良,徐锐.GPS /VRS???????????????????о?[J].大地测量与地球动力学,2007,27(1):96-99. |
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| 作者姓名： | 李成钢 黄丁发 周东卫 周乐韬 熊永良 徐锐 |
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| 作者单位： | 西南交通大学地理空间信息工程中心,成都,610031 |
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| 基金项目： | 国家自然科学基金(40271091)，教育部博士点基金(20040613025)，教育部优秀教师资助计划(2003109) |
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| 摘 要： | ??????????????????GPS/VRS????????,??????IGS?????????????GPS?????????????????????????GPS/VRS????ο???????VRS?????????????????????????GPS???????вο?????磨SGRSN????????????GPS??????磨SCIGN????????????????????????г?????????????????????????·??????и??????????????????????????????????0.004??10 -6??????????100 km?????RTK??λ??????????????????GPS/VRS????????????RTK??λ???????????????
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| 关 键 词： | GPS???? ????ο?? ????????? ????RTK???? GPS/VRS???? |
| 文章编号： | 1671-5942(2007)01-0096-04 |
| 修稿时间： | 2006年8月23日 |
ON REAL-TIME PRECISE ORBIT BIASES CORRECTION TECHNIQUE FOR GPS/VRS NETWORK |
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| Li Chenggang,Huang Dingfa,Zhou Dongwei,Zhou Letao,Xiong Yongliang,Xu Rui.ON REAL-TIME PRECISE ORBIT BIASES CORRECTION TECHNIQUE FOR GPS/VRS NETWORK[J].Journal of Geodesy and Geodynamics,2007,27(1):96-99. |
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| Authors: | Li Chenggang Huang Dingfa Zhou Dongwei Zhou Letao Xiong Yongliang Xu Rui |
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| Institution: | The Center of Geomatic Engineering, Southwest Jiaotong University，Chengdu 610031 |
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| Abstract: | An analysis of influence from the uncorrected satellite orbit errors on the GPS/VRS network based positioning is carried out. A precise real time method for using the IGS ultra rapid products (IGU) and the GPS broadcast ephemeris to calculate the VRS orbit corrections is presented which is suited for the real time correction of precise orbit of VRS in GPS/VRS reference station network based positioning. Test data acquired from both the SGRSN (Sichuan GPS Reference Station Network) and SCIGN (Southern California integrated GPS network) are used to evaluate the performance of the modeling techniques. The new method is proved to be more precise and reliable as compared with the existing conventional network based orbit error interpolation method. It is shown that 0.004×10 -6
relative accuracy is reached, i.e. the influence from the orbit bias for the RTK positioning within 100km area can be of sub millimeter level. |
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| Keywords: | GPS ephemeris VRS (Virtual Reference Station) orbit correction Network RTK GPS/VRS network |
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