New techniques development of hydrography and cartography in China

摘要

Hydrography and cartography is an important part of Geoinformatics, and it is the basic technology of ocean resource exploitation and utilization. In this paper some new techniques development situation of hydrography and cartography in China is introduced. The unification of marine and land datum, precision rectification of the marine remote sensing images, satellite altimetry and remote depth, the ocean delimitation, virtual reality and pattern recognition etc. are discussed as principal research contents. The situation and multi-expressing of marine surveying information processing are expounded at last.