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| 引用本文： | 张菊清,杨元喜,张亮.??????????????????????????????????????????е????[J].大地测量与地球动力学,2008,28(5):91-95. |
| 作者姓名： | 张菊清 杨元喜 张亮 |
| 作者单位： | 1. 长安大学地质工程与测绘工程学院,西安,710054 2. 西安测绘研究所,西安,710054 3. 南京大学外语部,南京,210093 |
| 基金项目： | 国家自然科学基金，长安大学校科研和教改项目 |
| 摘 要： | ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????С????????????????????????????????Щ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? |
| 关 键 词： | ?????? ??????? ?????? ??????? Э?????? |
APPLICATION OF COLLOCATION WITH CONSTRAINTS IN GIS ERROR FITTING |
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| Zhang Juqing,Yang Yuanxi,Zhang Liang.APPLICATION OF COLLOCATION WITH CONSTRAINTS IN GIS ERROR FITTING[J].Journal of Geodesy and Geodynamics,2008,28(5):91-95. | |
| Authors: | Zhang Juqing Yang Yuanxi Zhang Liang |
| Institution: | 1)School of Geology Engineering and Geomatics, Chang’an University, Xi’an 7100542)Xi’an Research Institute of Surveying and Mapping, Xi’an 710054 3)Department of Applied Foreign Language Studies,Nanjing University,Nanjing 210093 |
| Abstract: | Collocation is usually applied to deal with the parameter estimation,which contains the trend parameters and stochastic parameters.A more general collocation method is proposed,in which not only the two quadratic forms of residuals and signals are minimized,but also some geometrical or physical constraints must be satisfied.The collocation estimators,with stochastic signal constraints,trend parameter constraints,as well as the synthetic constraints of signals and trend parameters,are derived based on the standard collocation derivation process.An example of error correcting for a scanning map is given.It is shown that the collocation with constraints can not only improve the accuracy of scanning maps,but also satisfy the condition of map joint. |
| Keywords: | collocation constraint map joint stochastic parameter variance component estimation |
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