The theory of north finding is first introduced, and the measuring method of north azimuth is brought forward according to a fast north finding theory based on analysis method;

文中首先介绍了寻北系统的工作原理，根据基于解析方法的快速寻北原理，提出了北向方位角的测量方法；

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Method: First, device parameters and azimuth parameters of analytic geometry model and projective geometry model of coded structured light system were analyzed and unified.

方法：首先，比较分析编码结构光系统的解析几何模型和射影几何模型，统一了二者的设备参数、姿态和位置参数。

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