On constructing multi-scale city navigable electronic map

摘要

City multi-scale navigation electronic map integrates digital mapping technology, GIS technology, multimedia technology and other high - tech means, and builds a convenient and visual spatial information services platform for route design, route guide and route display. Taken the multi-scale characteristics into consideration, the design and development method of civil multi-scale navigation electronic map system was proposed. The total structure, key technique and solution strategies are explained in details. The key techniques based on interpolation method are provided for intelligent zoom of multi-scale road map. The test result shows the system function is valid and stable.