The invention provides a three-dimensional
terrain and
radar terrain generating method based on S-57 electronic chart data. The three-dimensional
terrain and
radar terrain generating method comprises the steps that firstly, an elevation vector
graph based on an electronic chart is generated based on the S-57 electronic chart data and through the combination of GDEM data, and the elevation vector graph serves as an uniform
data source; secondly, the elevation vector graph undergoes conversion, simplification and
texture mapping to generate a scene three-dimensional terrain model; at last, based on the elevation vector graph and through
cutting of the data,
radar terrain data generation and
water depth data and navigation target
data extraction are respectively completed at different sampling intervals according to needs. The three-dimensional terrain and radar terrain generating method based on the S-57 electronic chart data overcomes the defects that an existing terrain model is not uniform in
data matching, not high in precision and poor in running efficiency; the three-dimensional terrain data generating technology, the
GPS positioning technology and the GIS geological
information technology are integrated, so that the three-dimensional scene running efficiency and the three-dimensional scene vividness are guaranteed, and meanwhile, accurate matching between scene three-dimensional terrain data, radar terrain data,
water depth data and navigation target data and the electronic chart is realized.