| 国家数字地形库基础网格高程值的改算 |
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| 引用本文： | 丘其宪.国家数字地形库基础网格高程值的改算[J].测绘科学,1987(1). |
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| 作者姓名： | 丘其宪 |
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| 摘 要： | <正> 一、问题的提出经过近两年来的努力,我们正在建立国家数字地形模型(以后简称NDTM),其基础网格是将1:10万图幅(经差×纬差为30′×20′)等分成64×64个网格,每个基础网格的经差×
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MODIFICATION FOR THE BASIC GRID VALUES OF THE NATIONAL DIGITAL TERRAIN MODEL |
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| Abstract: | A weighted average method(taking area as weight)for modifying thenon-integral differences of longitude and latitude in the basic grid ofNDTM is addressed.The method has resolved the problem about the ND-TM application for the calculation in gravity measurement,and provids aconvenient and economic way for the further modification of the NDTM. |
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