Digital Map Production And Comprehensive Utilization Of Multiple Information Technology Research And Practice

When produced maps under the entire digital condition, we wi 11 face a new problem: the synthesized use of multi-source data. The quality of maping products is decided by the efficiency of use the material of maping and cartography.In the article, first deeply analyze the background of how cause the problem of synthesized use of multi-source data, put forward the particular problems and practical condition in the process of synthesized use of multi-source data. Then, deeply research about the practical use in map product ion of three particular original data. (TM image data, digital chart data, GPS data carried on vehicle), introduce acknowledge related with each data, analyze each or iginal data' s composing character, put forward the approach for the use of each original data.In the end, give an example of the production in joint operations map of scale 1:250000, to prove the correctness and validity of this method about the synthesized use of multi-source data.