The Design And Implementation Of The Geographic Information Public Platform Based On GF-1

Along with the continuous development of national information construction, the industry has accumulated more and more geographic information, spatial data management and GIS application system in different regions and different industries are often independent and heterogeneous, so that a large amount of information island is formed. The construction of geographic information platform will achieve geographic information sharing between different region industry as well as departments, and eliminate the phenomenon of geographic information island. Therefore, it is of great theoretical value and practical significance to further explore how to construct geographic information platform as well as obtain real-time and effective geographic information.This paper studies the construction principle and implementation method of geographic information public service platform based on GF-1. Firstly, the paper introduces the geographic information system and the technology used in it. Secondly, the demand analysis and the overall design scheme of the geographic information platform are discussed. Then, a new method of high resolution remote sensing image processing is given and the method is used to process the image shot by GF-1, the detail is given. Besides, the platform application applies tile map technology and cut out the "Pyramid" structure of the map image on the server in advance, this largely reduce server pressure, improve the request number and access speed. At last, the realization of each function module of the platform are discussed. Geographic information public service platform based on GaoFen-1 is mainly to achieve the following functions: load high resolution remote sensing images shot by GF-1, browse and view remote sensing image map of different resolution levels online; the basic operation of the electronic map; display or hide vector layers, and stack multiple vector layers.