编制等高初始星表的满星平差法

All-Star-Adjustment Method for Compiling An Almucanter Observational Catalog

为了适应雨季较长地区的观测,提出了编制等高初始星表的满星平差法。首先将年首两边跨度为一年的所有恒星在每个夜晚观测记录的钟面时刻,作岁差、章动、光行差和自行的修正,再通过不同夜晚之间的共同星作连接。消除各个参数在不同夜晚之间变化的影响,把所有的观测都化为年首附近同一夜晚相对于年首平位置的观测,分别取各颗星过东、西等高圈的多次观测的平均,即可直接解算出对年首平位置的改正值。最后给出了采用满星平差法处理Ⅱ型光电等高仪一年观测资料的结果,验证了这种方法原理是正确的,实施是可行的。

The all-star- adjustment method for compiling up an equal altitude initial catalogue is proposed to meet the needs of the observation of stars in the region with a longer rainy season. The results of dealing with the one year's observations, obtained with the Type Ⅱ photoelectric astrolabe of the Yunnan observatory, by means of this method are given and it is proved that the principle of the method is correct and the method is feasible.