摘要
领海是国家主权的重要组成部分,国家空间基准和位置服务应该覆盖陆地和海洋。以2000国家大地坐标系和2000国家重力基准为代表,我国已在陆地建成了较为完善的大地测量基准。然而,现有国家空间基准和重力基准未能有效覆盖海洋,海洋大地测量基准和海洋导航技术已严重滞后于国家社会经济发展新形势和国防战略需求。本文主要论述了我国海洋大地测量基准与海洋导航技术的研究现状,梳理了我国海洋大地测量基准所涉及的关键技术,分析了近期及未来我国自主发展海洋大地测量基准与海洋导航技术的主要方向。
Territorial water is a significant part of national sovereignty of China,thus the infrastructures of national space datum and location services should not only cover the land areas,but also the sea areas.China has established relatively complete geodetic datum in land areas over the past decades,including the new developed China Geodetic Coordinate System 2000(CGCS 2000)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 defense and marine economy development in new era of China.This paper mainly reviews the developing states and progress of Chinese marine geodetic datum and marine navigation,analyses key technologies in establishing the national marine geodetic datum.The develop current trends and future directions for the national marine geodetic datum and marine navigation technologies are listed.
引文
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