| 空间技术实现地心坐标的精度检测与分析 |
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| 引用本文： | 陈坡,孙付平,陈雷,刘雪瑞.空间技术实现地心坐标的精度检测与分析[J].海洋测绘,2009,29(2):31-34. |
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| 作者姓名： | 陈坡 孙付平 陈雷 刘雪瑞 |
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| 作者单位： | 1. 解放军信息工程大学,测绘学院,河南,郑州,450052
2. 61365部队,天津,300142 |
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| 摘 要： | 为评价GPS、VLBI、SLR三种空间技术确定地心坐标的实现精度，选择使用三种技术并置站上的坐标数据，在经历元统一、偏心改正和七参数转换之后，计算了这三种技术实现的参考架的转换参数，得到了任意两种技术地心坐标不符值的加权中误差，以此作为外符精度。经分析可知VLBI与GPS实现的地心坐标比SLR高一些，可达到毫米级。
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| 关 键 词： | 空间技术 地心坐标 标称精度 外符精度 |
Accuracy Determination and Analysis of Geocentric Coordinates Determined bySpace Geodetic Technologies |
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| CHEN Po,SUN Fu-ping,CHEN Lei,LIU Xue-rui.Accuracy Determination and Analysis of Geocentric Coordinates Determined bySpace Geodetic Technologies[J].Hydrographic Surveying and Charting,2009,29(2):31-34. |
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| Authors: | CHEN Po SUN Fu-ping CHEN Lei LIU Xue-rui |
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| Institution: | 1.Institute of Surveying and Mapping;Information Engineering University;Zhengzhou;Henan;450052;2.61365 Troops;Tianjin;300142 |
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| Abstract: | In order to evaluate the real accuracy of the geocentric coordinates determined by GPS, VLBI and SLR , we used their located on the same site. After calendar correction and eccentricity correction , we get the transformation parameters . The mean square error of difference between any two kinds of geocentric coordinates is analyzed, which can reflect the real accuracy . The results show that the accuracy of the coordinates determined by GPS and VLBI is higher than SLR , better than 1 mm. |
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| Keywords: | space geodetic technologies geocentric coordinate marker precision real accuracy |
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