数字地面模型 digital terrain model
- 文摘:利用图象软件对高线图填色,生成数字地面模型后,再对调绘片进行分带纠正。
Abstract: Using image software to fill the colors in contour map,the DTM is established,then the zonal rectification of the photographic map can be made. - 本文通过一个模型讨论了平均断面法、平均高程法及数字地面模型法三种测量及计算河塘清淤量和回填量的方法,通过比较三者计算的结果,得到一些有用的可供参考的结论。
This paper discusses three methods of surveying and calculating of the amount of digging and backfilling pool's sludge with a model, that is average section method, average height method and digital terrain model method, the useful result is concluded by comparison of their computing result. - 摘要这里利用电磁场理论和计算机辅助分析的方法导出电视工程常用的全向多层振元电视系列天线的数学模型,并应用于地面数字电视的单频网组网实践。
The mathematic model of antenna is used in digital TV system network layout and simulation. The disquisition educes the mathematic model of Omnidirectional Multilayer TV Antenna.
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