空间后方交会，是指利用航摄像片上三个以上不在一条直线上的控制点按共线方程计算该像片外方位元素的方法。是单幅影像解析过程中的一个步骤。
在框幅式成像模式下提出了基于共线方程的空间后方交会条件平差模型。
A collinearity equation based space resection adjustment model is presented under frame imaging pattern.
结合四元数在摄影测量中的良好应用，提出一种基于四元数的空间后方交会全局收敛算法。
A globally convergent algorithm of space resection based on quaternion is presented by combining good application of quaternion in photogrammetry.
介绍四元数的概念及运算性质，提出基于单位四元数的空间后方交会解算方法并给出计算公式。
The concept of quaternion and its operation rules were introduced first, then formulae for space resection based on unit quaternion were deduced.
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