Method of data preparation for electronic navigation map uses two main levels of resolution with additional level providing further information

摘要

The method of data preparation for an electronic navigation map uses a map (K) with map data for a region stored as first map data (L1) with a first resolution and as second map data (L2) with a second resolution. The map data for the region also employs a third level of data with increased resolution (3), which can carry additional information.