太阳圆面活动体光谱分析方法的比较

在研究暗条、耀斑等日面活动体的光谱时，观测谱线上都叠加上一定强度的背景光影响。如何消去这种影响对分析结果影响较大。目前，经典的方法有两大类：第一类是减法消去法，这种方法广泛为国内学者采用；第二类方法是除法消去法，即国外学者提出的（微）方模型方法。本文通过误差传递方法，比较了上述二大类方法，结果发现，所有方法的误差传递形式都是一样的，但（微）方模型的背景光误差可能要小些，至少从理论上讲要处理得合理些，因此（微）方模型要优越些。然而，从根本上讲，可以说，到目前为止，太阳圆面背景光处理问题还没有彻底解决。这方面的工作有待进一步探索。

Comparison of Some Methods for the Spectral Analyses of the Active Objects at the Solar Disk

Determination of the background light radiation under an active object on the solar disk is a problem to be solved when the solar spectral lines are analysed. In this paper,some methods which are now usually used to deal with the spectral background light have been compared through the error analyses. It is found that the differential cloud model is the best in all current methods, to deal with the however the model is not confirmed yet to be a very efficacious way to deal with the background light radiation, and it can be said that the determination of the background light radiation under an active object on the solar disk has not been completely or very well solved up to dote.