文档介绍：Subject :Research on Daylight in Building Based on 3D GIS
Specialty :Cartography and Geographic Information System
Name :Li Li (signature)
Instructor :Yaomin Zhang (signature)
ABSTRACT
Due to the rise in living standards, "living and environmental conditions" es one
of the most attention hot topics. However, in the process of unban construction and renovation,
increasing height of buildings and continuously shortening the distance between buildings
lead to fewer and fewer residential sunshine, which enhance the conflicts between the quality
of sunlight condition and improving the utilization rate of land. Therefore reasonable to
determine the orientation of buildings and the impact of distance and shadows to meet the
sunlight environment quality requirements of the residents has e an important problem
that must be considered in current planning and design.
With the development of three-dimensional GIS technology and the increasing
deepening of the study on three-dimensional sunlight analysis model, traditional manual
calculations and sunlight analysis system based on two-dimensional CAD platform have been
difficult to meet the urban planning program in the fast and accurate sunlight analysis of the
sunlight requirements. Therefore, this paper proposes to build three-dimensional building
sunlight analysis system by using three-dimensional GIS and three-dimensional sunlight
analysis model.
Firstly, this paper introduces the basic parameters of calculating sunlight times and
shadow. The paper analyzed the calculation method of buildings’ sunlight time and distance
based three-dimensional GIS on the basis of the building sunlight analysis of traditional
manual calculations and two-dimensional CAD.
Secondly, in depth analysis of Google Earth three-dimensional modeling and
development methods, three-dimensional building model are established in this paper, the
overall design and the functional module design of the b