【作者】 张全德；

【Author】 ZHANG Quande National Geomatics Center of China, Beijing 100044

【机构】 国家基础地理信息中心；

【摘要】 本文对GPS A、B级网、一、二级网和地壳运动观测网络的有关资料进行分析,提出了上述三网经联合平差后的GPS2000网,由于布网的缺陷,还未构成我国地心坐标系统的大地控制网而取代天文大地网。为此,应对GPS2000网进行加密和改造,才能作为国家现代大地控制网。并提出了如何加密和改造的方案。更多还原

【Abstract】 The thesis analyses the information on GPS A-order & B-order network, the first-order & second-order network and the crustal movement observation network. Furthermore, it brings about the GPS2000 network which is gained by survey adjustment of three network above associated. But the GPS2000 network can not replace the astro-geodetic network because of the limitation of itself and because it still does not structure the geodetic network of geocentric coordinate system. As a result, the GPS2000 network must be encrypted and reformed in order to be used as National modern geodetic network. The thesis puts forward a proposal how to encrypt and reformed.更多还原