美国国家空间参考系统现代化进展  

Progress of the modernization of the United States National Spatial Reference System

作　　者：熊超 卢传芳 刘宗毅 乌萌[1,2] XIONG Chao;LU Chuanfang;LIU Zongyi;WU Meng(Xi’an Research Institute of Surveying and Mapping,Xi'an 710054,China;State Key Laboratory of Geo-Information Engineering,Xi’an 710054,China;Xi'an Aerospace Remote Sensing Data Technology Co.Ltd.,Xi'an 710063,China)

机构地区：[1]地理信息工程国家重点实验室,陕西西安710054 [2]西安测绘研究所,陕西西安710054 [3]两安航天天绘数据技术有限公司,陕西西安710100

出　　处：《测绘科学与工程》2021年第2期70-78,共9页Geomatics Science and Engineering

摘　　要：美国国家空间参考系统目前使用的是NAD83(2011,MA11,PA11)和NAVD 88,计划2022年~2025年将完成几何基准与物理基准融合的新大地基准NSRS2022,实现美国国家空间参考系统的现代化。为了升级NSRS.NGS将替换3个NAD83框架为4个新的四个地球参考框架和替换所有的垂直基准包括1988北美垂直基准NAVD88为一个新的重力基准。本文重点介绍了美国国家空间参考系统现代化目标及近年来的进展,最后探讨了NSRS现代化给我国空间参考系统建设的启示。The National Spatial Reference System(NSRS)is currently realized by the North American Datum of 1983,which is called NAD 83(2011,MA11,PA11),and the North American Vertical Datum of 1988(NAVD 88).The National Geodetic Survey(NGS)will be providing updated access to the U.S.NSRS for 2022(NSRS2022),which is an integrated system for both geometric datum and geopotential datum between 2022 and 2025,and implementing the modernization of the NSRS.To improve the National Spatial Reference System(NSRS),NGS will replace all three NAD83 frames and all vertical datums,including the NAVD88,with four new terrestrial reference frames and a geopotential datum.In this paper,the goals and progress of the modernization of the United States NSRS are discussed.Finally,the recommendations of development of China's NSRS are discussed.

关 键 词：国家空间参考系统 进展 现代化 连续运行参考站 国际地球参考框架 

分 类 号：P228[天文地球—大地测量学与测量工程]