摘要
从全局最优的角度分析了工业测量空间三维基准转换时经常出现解不稳定现象的原因,利用最优初值和局部最优算法,可以获得唯一确定的全局最优解。结合实际工业测量应用中的公共点移站测量,用此方法可以获得更加稳定的转换参数,对于其他低信噪比平差问题出现解不稳定的现象提供了解决方法。
From the perspective of global optimization, the reason for unstable solutions for industrial 3-D datum transformation are analyzed. A uniquely determined global optimization is obtained by the optimal initial values and local optimal method. In applications for industrial station-moving measurements with common points, transformation parameters can be calculated more stablely by this method. Other low signal-to-noise ratio adjustment problems exhibiting instablity can refer to the method presented in this paper for a solution.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2014年第1期85-89,94,共6页
Geomatics and Information Science of Wuhan University
基金
高等学校博士学科点专项科研基金博导类资助项目(20120072110049)~~
关键词
三维基准转换
全局最优解
迭代初值
工业测量
病态问题
3D datum transformation
global optimization
iterative initial value
industrial measurement
ill-posed problem
