| 用MLS多面函数拟合法求解高程异常 |
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| 引用本文： | 李国鹏,刘站科,柏华岗.用MLS多面函数拟合法求解高程异常[J].测绘工程,2011,20(5):33-35. |
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| 作者姓名： | 李国鹏 刘站科 柏华岗 |
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| 作者单位： | 国家测绘局第一大地测量队,陕西西安,710054 |
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| 摘 要： | 在求解高精度的高程异常时,多面函数在理论上可以以任意精度逼近任意复杂曲面,但其核函数与平滑因子的选取,以及定权的方式都会对拟合效果产生很大影响,而移动最小二乘(MLS)多面函数法通过对权函数合理的调整,使不同的待定点建立不同的多面函数模型,有效提高高程异常的拟合逼近精度.
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| 关 键 词： | 高程异常 移动最小二乘多面函数 拟合 权 核函数 |
Obtaining height anomaly by using multi-quadric function interpolation of moving least square |
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| LI Guo-peng,LIU Zhan-ke,BAI Hua-gang.Obtaining height anomaly by using multi-quadric function interpolation of moving least square[J].Engineering of Surveying and Mapping,2011,20(5):33-35. |
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| Authors: | LI Guo-peng LIU Zhan-ke BAI Hua-gang |
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| Institution: | LI Guo-peng,LIU Zhan-ke,BAI Hua-gang(The First Geodetic Surveying Brigade of SBSM,Xian 710054,China) |
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| Abstract: | While obtaining the high-accuracy height-anomaly,multi-quadric function interpolation in terms of theory is not bad accuracy to approach the arbitrarily complicated curved surface arbitrarily,but the core-function and smoothing factor,the choice of weight will exceedingly affect the fitting impression.By adjusting rationally the weight function with the multi-quadric function interpolation of MLS,established on the different model of multi-quadric function interpolation to the different point of certainty,e... |
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| Keywords: | height-anomaly multi-quadric function interpolation of moving least-square fitting weight core-function |
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