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四元数微分方程的高分辨率卫星遥感影像外方位元素求解
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四元数微分方程的高分辨率卫星遥感影像外方位元素求解
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Journal Article
四元数微分方程的高分辨率卫星遥感影像外方位元素求解
2012
Overview
通过对高分辨率卫星遥感影像成像机理进行分析，提出一种基于四元数微分方程的外方位元素求解方法。该方法采用四元数描述影像成像姿态，建立基于四元数微分方程的成像几何模型。为求解该模型，引入3个独立的解算参数，计算过程中不直接求解姿态四元数，而是解算参数，使得未知数个数与现有方法相同，并采用Tikhonov正则化理论进一步求解方程。试验结果表明该方法正确可靠，具有很好的稳定性和适应性，解算参数的引入效果显著，对定位精度有一定的提高，并且完全避免了三角函数运算。
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