交互投影迭代算法的原理与实践:用线性化分离方法求解Non-LTE恒星大气模型  

PRINCIPLES AND PRACTICE OF THE ITERATIVE ALTER-NATING PROJECTION ALGORITHM:THE SOLUTION FOR NON-LTE STELLAR ATMOSPHERE MODEL WITH LINEAR SEPARATE METHOD

作　　者：赵定烽[1,2] 

机构地区：[1]中国科学院紫金山天文台 [2]中国人民解放军南京陆军指挥学院南京210045

出　　处：《天文学报》2001年第1期29-37,共9页Acta Astronomica Sinica

基　　金：国家自然科学基金资助项目

摘　　要：讨论交互投影的迭代算法在线性化分离求解Non LTE恒星大气模型中的运用和实践 ,交互投影的迭代算法可以实现降维和病态分离 ,它的解可以收敛至原来解的最小二乘解 ,实践证实了这一点 。In this paper, a new method, i.e. the linearization separation method, is used to calculate Non LTE stellar atmosphere models. The principles of the new method are based on the iterative of alternating projections of two convex sets used for calculation of linearized models. With the linearization of iteration method the separation of descent of dimension and ill condition may be realized. It can substitute the complete linearization method in the calculation of stellar atmosphere models.

关 键 词：恒星大气模型 交互投影迭代算法 线性化分离求解方法 

分 类 号：P15[天文地球—天文学]