城市勘测
城市勘測
성시감측
URBAN GEOTECHNICAL INVESTIGATION & SURVEYING
2015年
2期
91-94
,共4页
高程基准%二等水准网%重力异常改正%固体潮改正%海潮改正
高程基準%二等水準網%重力異常改正%固體潮改正%海潮改正
고정기준%이등수준망%중력이상개정%고체조개정%해조개정
height datum%the second order leveling network%gravity anomaly correction%earth tide correction%sea tide correction
区域性现代高程基准建设不仅要与国家现代高程基准的衔接，且应统筹考虑空间坐标基准框架的构建、兼顾与大地控制网之间的结合及国家高程基准的更新。由此形成的区域高程基准框架，才能够满足现代测绘基准体系对高程基准框架的要求。本文通过对广东省二等水准复测所面临的若干理论和实践问题进行了充分和细致的研究，提出了一些不同于以往的设想和改进举措，以期能为本区域提供可靠的地理空间基础框架，从而实现在本省任何地点、任何时间都能高精度地测定坐标和高程。
區域性現代高程基準建設不僅要與國傢現代高程基準的銜接，且應統籌攷慮空間坐標基準框架的構建、兼顧與大地控製網之間的結閤及國傢高程基準的更新。由此形成的區域高程基準框架，纔能夠滿足現代測繪基準體繫對高程基準框架的要求。本文通過對廣東省二等水準複測所麵臨的若榦理論和實踐問題進行瞭充分和細緻的研究，提齣瞭一些不同于以往的設想和改進舉措，以期能為本區域提供可靠的地理空間基礎框架，從而實現在本省任何地點、任何時間都能高精度地測定坐標和高程。
구역성현대고정기준건설불부요여국가현대고정기준적함접，차응통주고필공간좌표기준광가적구건、겸고여대지공제망지간적결합급국가고정기준적경신。유차형성적구역고정기준광가，재능구만족현대측회기준체계대고정기준광가적요구。본문통과대광동성이등수준복측소면림적약간이론화실천문제진행료충분화세치적연구，제출료일사불동우이왕적설상화개진거조，이기능위본구역제공가고적지리공간기출광가，종이실현재본성임하지점、임하시간도능고정도지측정좌표화고정。
Regional modern height datum building not only with the state of modern height datum convergence,and consideration should be given to build the spatial coordinate reference frame,combined and updated national height da-tum balance between the geodetic control network. Regional height datum framework thus formed,to be able to meet the benchmark of modern surveying and mapping system for benchmarking framework elevation requirements. In this paper, a number of theoretical and practical issues on the second level facing Guangdong retest conducted a full and detailed study made a number of assumptions and different from the previous improvement initiatives in the region in order to be able to provide a reliable basis for geospatial framework to achieve in the province any place,any time can be measured with high precision coordinates and elevation.
