The Application Research Of Google Earth In Constructing Virtual Environment

With the development of virtual reality technology and computer network technology, application of virtual environment in education is developing rapidly. It can provide students a immersive and ineractive environment which could improve students' learning interest.However,since the hardware and software is limited in the field of teaching and education,it is very difficult to construct a high-immersion and three-dimensional virtual environment. Therefore,it is very meaningful to import a powerful and convenient virtual reality software and construct a three-dimensional virtual environment in the field of teaching and education. Google Earth is a kind of free and popular Virutal Globe soft in current and it applies widely in developing virtual environment. Therefore,it is a diffculty and hotshot how to develop a virtual environment with Google Earth.From the actuality of Google Earth applications and the actuality of researching virtual environments, the article introduces and analyzes the thearies of virtual environments, Google Earth platform,KML language, three-dimensional modelling technology, and then put forward a design that constructs a three-dimensional Virtual Learning Environments with integrating learning resources and virtual nature environment based on Google Earth and KML. At last, the articl implements a part of Virtual Learning Environments based on Google Earth,namely constructing three-dimensional virtual environments and integrating learning resouces. According to the methods above ,the article designs two cases and validates the outcome respectively.The main work and innovation as follows:(1) The article discusses and researches the application of Google Earth,and put forward to Google Earth teaching platform.(2) The article researches the methods of making learning resources placemark, and put forward to a flow of making learning resources placemark.(3) The article researches the methods of creating three-dimensional models of Google Earth, and design a set of plan to contructing a high-immersion three-dimensional virtual environment through converting OBJ models to Collada models.