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本文通过分析影响长度综合变形因素,理论提出区域新建参考椭球方案和具体建立办法;通过西安至成都客运专线翻越秦岭地段常规方式和新建参考椭球分带实例比较,得出新建参考椭球方法解决长度综合变形、减少分带的效果显著。新建参考椭球减小了各点大地高差和经度差,更好地与测区吻合;平移、旋转参考椭球过程中,未改变各点空间相对关系,精度未损失;新旧参考椭球下坐标可自由转换,因此新建参考椭球很好解决了长度综合变形问题。
In this paper, by analyzing the factors influencing the length of comprehensive deformation, the paper proposes a new reference ellipsoid scheme in the area and a concrete way to establish it. Through the comparison between the conventional method of overtaking the Qinling Mountains from Xi’an to Chengdu and the new reference ellipsoid zoning, the new reference ellipsoid method Solve the length of the integrated deformation, reduce the effect of zoning significantly. The new reference ellipsoid reduces the height difference and longitude difference of each point, which is more consistent with the measuring area. The relative spatial relationship of each point is not changed during the translation and rotation of the reference ellipsoid, and the accuracy is not lost. Under the old and the new reference ellipsoid Coordinates can be freely converted, so the new reference ellipsoid solves the length of the comprehensive deformation problem.