|
|||||
|
|
| ��С������������ͨKriging���ıȽ� | |
| 引用本文： | 姚道荣,钟波,汪海洪,王伟.��С������������ͨKriging���ıȽ�[J].大地测量与地球动力学,2008,28(3):77-82. |
| 作者姓名： | 姚道荣 钟波 汪海洪 王伟 |
| 作者单位： | 1. 武汉大学后勤保障部,武汉,430079 2. 武汉大学测绘学院,武汉,430079;地球空间环境与大地测量教育部重实验室,武汉,430079 3. 武汉大学测绘学院,武汉,430079 |
| 基金项目： | 国家自然科学基金 , 国家重点基础研究发展计划(973计划) , 教育部重点实验室基金 , 西部交通建设科技项目 |
| 摘 要： | ?????????????????????????????????С???????ú????Kriging????????????????????????÷??????Kriging??????????????????????????μ??????????????????1??????????????????￡?????????????Kriging???????????????÷??????????????￡?????????????÷??????????????Kriging????????2????:???????????????У????Kriging??????????Ч????????? |
| 关 键 词： | ??С???????? Kriging?? Э?????? ?????? ?????????С???? |
| 文章编号： | 1671-5942(2008)03-0077-06 |
| 修稿时间： | 2007年12月15 |
COMPARISON BETWEEN LEAST SQUARE COLLOCATION AND ORDINARY KRIGING |
|
| Yao Daorong,Zhong Bo,Wang Haihong,Wang Wei.COMPARISON BETWEEN LEAST SQUARE COLLOCATION AND ORDINARY KRIGING[J].Journal of Geodesy and Geodynamics,2008,28(3):77-82. | |
| Authors: | Yao Daorong Zhong Bo Wang Haihong Wang Wei |
| Institution: | 1)Logistic Support Department, Wuhan University, Wuhan 4300722)School of Geodesy and Geomatics, Wuhan University, Wuhan 4300793)Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan 430079 |
| Abstract: | The methods of least square collocation and ordinary Kriging are introduced,and then the similarities and differences between them in the supposing condition,estimate criterion and characters of estimate value are pointed out.The performance and accuracy estimated by collocation and ordinary Kriging are compared through an example of simulated gravity anomaly data with different observation errors and data resolution.The results show that the effect of observation error on the accuracy estimated by Kriging is greater than that by collocation under the same data resolution,and the effect of data resolution on the accuracy estimated by collocation is greater than that by Kriging under the same observation error.Finally,the two prediction techniques are applied to fit the height anomaly in a local area,the result indicates that the Ordinary Kriging is also an effective method for refining the local geoid. |
| Keywords: | least square collocation Kriging method covariance function variogram linear unbiased minimum variance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《大地测量与地球动力学》浏览原始摘要信息 | |
| 点击此处可从《大地测量与地球动力学》下载免费的PDF全文 | |