坐标相似变换模型的探讨--《北京测绘》2008年04期

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坐标相似变换模型的探讨

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【摘要】:常用的坐标转换模型,讨论了大地高的不确定性对应用Bursa模型进行坐标转换的影响。结合工程应用的实际情况,选择平面坐标转换模型对北京地方坐标与西安80坐标进行转换,转换精度满足实际需求。水利论文%T8H;x` Q2u(g

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【作者单位】:水利论文[a{2e7fg#Q

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【关键词】:水利论文KW.o]^$h

]:V4W-S k0I0坐标转换 大地高误差 转换精度

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【正文快照】:

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\rk(a:sDBp0坐标系统间的差异主要来自于坐标系统的定义差,即原点位置、坐标轴向的定向和尺度的定义差。我国目前测图及工程规划、设计等通常采用的是北京54坐标系统、西安80坐标系统或地方坐标系统等参心坐标系。为了将不同坐标系统统一到同一坐标基准,可以采用相似变换模型、多项式拟水利论文&YLL7E7[N

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