摘要
基于最优化计算理论中罚函数方法及传统测量平差中零权和无限权的思想,提出一种有效的迭代算法,算法过程与经典平差计算方法相同。数值实验表明,该算法简单、可行,并且具有很快的收敛速度。作者还将该模型用在大坝变形分析中,根据地形对控制点建立不等式约束,能够探测到更真实的点位位移,较之无约束平差更合理可靠。
A new effective iterative algorithm that is similar to classical adjustment is proposed based on penalty functions and zero or infinite weight.Numerical simulation shows that this algorithm is simple and feasible and has good convergence.Then it is applied to a dam deformation monitoring control net,the inequality constraints of control points are established according to the terrain and it can be detected that the real displacement of the control points and it is more reasonable and reliable than that of unconstrained adjustment.
出处
《测绘学报》
EI
CSCD
北大核心
2011年第2期209-212,共4页
Acta Geodaetica et Cartographica Sinica
基金
国家自然科学基金(40974007
40574003)
湖南省博士生科研创新项目(CX2010B048)
关键词
不等式约束平差
有效约束
惩罚函数
虚拟观测
变形监测
linear inequality constrained adjustment（LICA）
active constraint
penalty function
virtual observation
deformation monitoring
