| 虚拟权平差的方差估计 |
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| 引用本文： | 覃辉.虚拟权平差的方差估计[J].勘察科学技术,1995(2):48-51,41. |
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| 作者姓名： | 覃辉 |
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| 作者单位： | 中南工业大学!长沙市410083 |
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| 基金项目： | 中国有色金属工业总公司“八五”重点资助项目 |
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| 摘 要： | 本文基于虚拟权平差函数模型,首先推导了单位权方差σ_0~2的边缘极大似然估计(?)_0~(n~2),证明了(?)_0~(n~2)是σ_0~(n~2)的无偏、有效估计量,然后构造了σ_0~2的另一无偏估计(?)_0~2,通过平差实例验证了(?)_0~2的基本有效性.
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| 关 键 词： | 虚拟权平差 单位权方差 边缘极大似然估计 统计性质 |
VARIANCE ESTIMATION OF QUASI-WEIGHT ADJUSTMENT |
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| Qin,Hui.VARIANCE ESTIMATION OF QUASI-WEIGHT ADJUSTMENT[J].Site Investigation Science and Technology,1995(2):48-51,41. |
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| Authors: | Qin Hui |
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| Affiliation: | Central South Univetsity of Technology |
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| Abstract: | Based on the functional model of guasi-weight adjustment, this paper first derives the marginal maximum likelihood estimation of unit-weight variance. It proves that is the unbiased effective esti-mation. Then,it constructs another unbiased estimation of By a case history of adjustment ,it verifies the fundamental effectiveness of (?) |
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| Keywords: | guasi-weight adjustment variance of unit weight marginal maximum likelihood estimation sta-tistical properties |
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