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Based on electrical Map and measured elevation data, noise mapping of South Second Ring in Xi'an City is attained based on GIS and CadnaA software. In the Noise mapping, sound pressure level isn't consistent with measured data. The main reason is that foreign noise prediction model does not apply in China. According to some kinds of feature, such as concentrated viaduct and intersection, host and...
3d data model of mine underground space is the key and difficulty of research on mine 3D GIS. In view of the existing problems of coal mine underground 3D spatial modeling, the whole mine underground space is described as an abstract models. Firstly, One concepts, dynamic field frame are introduced according to the relation between real mine underground space model and digital model. Secondly, there...
The rapid progress of GIS application has put forward higher demands to GIS software. Although the secondary development capabilities and degree of openness of GIS software have improved greatly now, but there are still many problems, such as the inadequacy of spatial data handling and analysis capacity, poor openness, difficult sharing of data and services. The paper provides a solution of rapid...
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