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文文在对NOAA-AVHRR像元畸变特点分析和IB格式中的定位数据质量评价基础上,确定IB格式中的定位数据。尽管绝对精度很差,但相对精度较好,可以用来进行像元的相对定位,确定像元的大小和形状,在此基础上,提出了NOAA-AVHRR像元畸变校正方法。校正后的图像经多项式纠正后,多时相复合和与辅助数据相复合的效果很好,误差为半个像元级。
Based on the feature analysis of NOAA-AVHRR pixel distortions and the quality evaluation of the positioning data in IB format, Wen Wen determines the positioning data in IB format. Although the absolute accuracy is poor, the relative accuracy is good, which can be used to locate the relative positions of the pixels and determine the size and shape of the pixels. On this basis, a NOAA-AVHRR pixel distortion correction method is proposed. After the corrected image is polynomial corrected, the effect of compounding multiple phases and compounding with auxiliary data is very good, the error is half pixel level.