| 方向后交最佳点位分析 |
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| 引用本文： | 法惟刚,邢文战.方向后交最佳点位分析[J].测绘工程,2004,13(4):12-15,34. |
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| 作者姓名： | 法惟刚 邢文战 |
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| 作者单位： | 辽宁科技学院,辽宁,本溪,117022;辽宁科技学院,辽宁,本溪,117022 |
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| 摘 要： | 推导出方向后交点住精度的显函数公式;用解析法导出对称交会时最佳交会角和最佳点精度;用无约束最优化共轭梯度法,求出一般情况下方向后交最佳交会角和点位精度;求出同一三角形三个内角分别作顶角进行后交定位的最佳点位,得出三角形内只有一个最佳点位的结论,给出一种选择近似最佳点位的方法.
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| 关 键 词： | 方向后方交会 最佳点位 点位方差 图形系数 |
| 文章编号： | 1006-7949(2004)04-0012-04 |
| 修稿时间： | 2004年3月1日 |
Analyse of optimum point position for direction resection |
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| FA Wei-gang,XING Wen-zhan.Analyse of optimum point position for direction resection[J].Engineering of Surveying and Mapping,2004,13(4):12-15,34. |
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| Authors: | FA Wei-gang XING Wen-zhan |
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| Abstract: | In this paper, a explicit function formula of direction resection is derived. The optimum intersection angles and the point position of symmetric resection are deduced by means of analytic method. Using optimized unrestrainted conjugated gradient method, the optimum intersecton angles and the point positional accuracy in general case are obtained. Three inside angles of the same triangle are regarded respectively vertex angles, the optimum point position of resection is solved. Only one optimum point position in a triangle is concluded. A method of selecting approximate optimum point position is advanced. |
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| Keywords: | direction resection) optimum point position) point position variance) graph coefficient |
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