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本文主要研究对异于ＮＯＡＡＡＶＨＲＲ１Ｂ数据集的ＮＯＡＡＡＶＨＲＲ１Ａ．５数据集的定位，提出了非地标导航的定位处理方法。并在大量实验的基础上指出，从原始数据图像到等经纬度投影图的纠正过程中不宜采用间接的多项式拟合法。
This article focuses on NOAAAVHRR1A that is different from the NOAAAVHRR1B dataset. 5 data set positioning, proposed non-landmark navigation positioning method. And on the basis of a large number of experiments, it is pointed out that indirect polynomial fitting method should not be adopted in the process of correcting projection images from original data to isosceles latitude and longitude.