Progresses and Prospects of Marine Geodetic Datum and Marine Navigation in China

作者：Yuanxi YANG,Tianhe XU,Shuqiang XUE

摘要：Territorial water is a significant part of national sovereignty of China,thus the infrastructures of national space datum and location services should cover the sea areas except for the land areas.China has established relatively complete geodetic coordinate frame in land areas over the past decades,including the lastest developed China Geodetic Coordinate System 2000(CGCS 2000)with its reference frame and the national gravity datum 2000.However,the currently used geodetic infrastructures have not well covered the sea areas of China.The marine geodetic datum and marine navigation technologies need to be further developed and extended to satisfy the national demands of marine environment and resources detection,scientific investigation as well as marine economy development in new era of China.This paper mainly reviews the development and the progress of Chinese marine geodetic datum and marine navigation,analyses related key technologies in establishing our national marine geodetic datum.Some current trends and future directions for independently developing our national marine geodetic datum and marine navigation technologies are discussed.

發文機構：State Key Laboratory of Geo-information Engineering Xi’an Research Institute of Surveying and Mapping Institute of Space Science Chinese Academy of Surveying and Mapping

關鍵詞：MARINESURVEYINGGEODESYDATUMpositioningUNDERWATERNAVIGATION

分類號： P[天文地球]