1:250,000 Scale Standard Image Map Cartography

Map is one of the uppermost form of production and geo-information in the research of geology. Its variety and real time had been needed by many specialty of geology more and more along with the development of country resource survey. Remote sensing (RS) graphics, work up by link from computer cartography technology and modern digital image dispose technology, is the important embranchment of cartology and main part of digital earth.In decades, digital image cartography technology had already reached utility overseas, and the paper map had been replaced by image map in a lot of fields in USA, Europe, and Canada. Since last 90s, our country began to research and develop the digital image map cartography technology, which is applied in mapping, land, agriculture, ocean, etc more or less.The development of RS technology provides abundant information for cartology, assure the variety and real time of data. Using RS information to do the RS digit image map have many advantages: macroscopical, real time, no limited of frontier and political position when catch information, short cycle, high quality. Moreover, obtainment and disposal of renewed ceaseless RS information is precondition and condition of modern RS cartography development.The 1:250,000 scale map is the basic of the country resource survey application. So, the China Geological Survey (CGS) makes the item,"research of 1:250,000 scale standard image map cartology", in order to accomplish the 1:250,000 scale standard image maps of China continent, and reach the RS image map requirement of country resource survey, by RS Satellite data application.Based on the requirement of country resource survey, the paper researches the method and technique flow of 1:250,000 scale standard image map cartography, establishes the work rules, develop the quality control method.Accomplished more than 300 pieces of 1:250,000 scale standard image maps, provide exact and real time information service and map products for country resource survey, country construction, special department.