Through studying the relationship between space vectors of different coordinate systems, a new model of three-dimensional datum transformation is proposed.
从空间几何角度出发，利用空间向量的关系研究坐标转换，提出一种新的三维基准转换模型。
Three dimensional nonlinear datum transformation is widely used in geodesy and photogrammetry.
三维基准转换广泛应用于大地测量和摄影测量。
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