摘要
论述了TIN模型在表达区域温度分布状况中的应用,并着重介绍了应用中涉及到的各种算法。采用将连续的空间区域离散化,以点温度值代替微小面元温度的方法来表达区域温度状况。将温度特征点通过Delau nay三角剖分方法生成TIN三角网来对区域温度场进行建模,从而通过内插方法来获取区域各位置的温度值,并在生成的三角网基础上生成等温线和区域温度颜色渐变图来形象、直观反映区域温度状况。为了考察应用效果,作者在成都理工大学主校区进行实地检验,采集了 15个温度特征点,通过编程来实现对采样点进行TIN三角网的构建、等温线和区域温度图的生成。实验的结果表明TIN模型在温度场中的应用效果良好。
The paper discusses the application of TIN model in researching regional temperature distribution as well as the algorithms involved. The authors use the values of discrete points as the wee face to express region temperature conditions and select the characteristic temperature points in the region to obtain their geographical coordinates and values of temperature, then the authors construct the triangulated networks by programming in order to model to the regional temperature field to get the value of every position's temperature. In the application, the authors create isotherms and gradual color transformational drawing to express the information deeply. The experiment on the campus indicates that the application of TIN model in temperature field is good.
出处
《测绘与空间地理信息》
2005年第1期56-60,共5页
Geomatics & Spatial Information Technology
关键词
温度场
不规则三角网
等温线
分段三次多项式法
TIN模型
temperature field
triangulated irregular network
isotherm
subsectional cubic polynomial method
