| 后方交会的精度估计和设计 |
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| 引用本文： | 覃辉. 后方交会的精度估计和设计[J]. 四川测绘, 1997, 0(2) |
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| 作者姓名： | 覃辉 |
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| 作者单位： | 五邑大学!江门，529020 |
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| 摘 要： | 本文从角度观测方程出发，推导了一个简单、实用的后方交会占位精度计算公式，通过分析交会点的误差椭圆提出，适当加测后方交会方向中的某些光电测距边，可以明显地改善位于危险圆附近的后方交会点观测方程系数矩阵的条件数，提高交会点的点位精度．
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| 关 键 词： | 后方交会 系数矩阵 条件数 危险圆 光电测距边 |
PRECISION ESTIMATION AND OBSERVATION DESIGN FOR RESECTION |
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| Abstract: | Based on the angle observation of resection,this paper derives asimple and practical precision estimation formula for the resection point.By analysingthe error ellipse of a resection which is adjacent to a circumscribed circcle of thetbree points, it is proposed, if measuring some electro-optical ranging sides among thethree directions of the resection, that the condition number of its coefficient matrix andposition error will be decreased. |
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| Keywords: | resection coefficient matrix condition number circumscribed circle electrooptical ranging side |
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