Route Height Connection Across the Sea by Using the Vertical Deflections and Ell

排行榜 收藏 打印 发给朋友 举报 来源: 《China Ocean Engineering》 发布者:cjk3d
热度6票 浏览9次 【共1条评论】【我要评论 时间:2013年12月09日 13:05
水利论文`}!R q6Rds[dZ

Route Height Connection Across the Sea by Using the Vertical Deflections and Ellipsoidal Height Data

|,z |r%w$[d0

Ga ?w"X:|0郭金运 陈永宁 刘新 钟世霞 麦照秋

)`k[IH]9fo0 水利论文_mL@6[v?

【摘要】:Distance between the main land and island is so long that it is very difficult to precisely connect the height datum across the sea with the traditional method like the trigonometric leveling,or it is very expensive and takes long time to implement the height transfer with the geopotential technique.We combine the data of GPS surveying,astro-geodesy and EGM2008 to precisely connect the orthometric height across the sea with the improved astronomical leveling method in the paper.The Qiongzhou Strait is selected as the test area for the height connection over the sea.We precisely determine the geodetic latitudes,longitudes,heights and deflections of the vertical for four points on both sides across the strait.Modeled deflections of the vertical along the height connecting routes over the sea are determined with EGM2008 model based on the geodetic positions and heights of the sea segmentation points from DNSC08MSS model.Differences of the measured and modeled deflections of the vertical are calculated at four points on both sides and linearly change along the route.So the deflections of the vertical along the route over the sea can be improved by the linear interpolation model.The results are also in accord with those of trigonometirc levelings.The practical case shows that we can precisely connect the orthometric height across the Qiongzhou Strait to satisfy the requirement of order 3 leveling network of China.The method is very efficient to precisely connect the height datum across the sea along the route up to 80 km.水利论文| q&i u;P7{&c3vsJz

水利论文ji;e6{%Y"e

【作者单位】:

'R_F E&\U6{?0 水利论文K,`&y2x y b

College

k3Q i+s:v]&T;]0

QKQ L R,wS'e0【关键词】:

EnC9yz SA0 水利论文Ha l/Z0p

height connection across sea;deflection of the vertical;astro-geodesy;orthometric height;ellipsoidal height

?&D/C%P l;n0

`*_1P'M)WN0【基金】:supported by the National Natural Science Foundation of China (Grant No. 40974004)水利论文b uxZd

水利论文LbF8UK:ZE

the National High-Technology Research and Development Program of China (863 Program,Grant No. 2009AA121405)

.KJ)_ OS{-^2A0 水利论文gU0it3v

the Key Laboratory of Surveying and Mapping Technology on Island and Reef of NASMG,China (Grant No. 2011A01)水利论文&rj ]%v!l/r%l

水利论文$\w k:[0X

the Key Laboratory of Advanced Engineering Surveying of NASMG,China (Grant No. TJES1101)水利论文*I j1r:P |,A\f

2sJ R {*v@ ^Q-K0【分类号】:P229

b O!~+@ M`M Y `0 水利论文&J?*?z:u2o%QX

【正文快照】:水利论文PN h Hc+MD7W

水利论文8NH+I z'`}5cD

1. IntroductionHeights as the basic geographical information reflect the earth surface undulations and thegeopotential differences. There are two main height systems in geodesy, that is, the ellipsoidal heightreferenced to one reference ellipsoid and the

7nJ1za I_#U})jJ,^0
下一篇:Fully Nonlinear Simulations of Wave Resonance by An Array of Cylinders in Vertic
上一篇:Study on the Uncertainty of the Available Time Under Ship Fire Based on Monte Ca
水利论文安徽省电信网友 [osdj44l3] ip: 117.68.*.*
2017-05-11 05:24:32
Make yourself a leader <a href="http://www.cheapnfljerseys-online.com/">Cheap Jerseys</a>  when it comes to home mlm. <a href="http://www.cheapnfljerseys-online.com/">Cheap NFL Jerseys</a>  Cheap Jerseys Are you carrying Cheap NFL Jerseys out initial analysis to find out if this is a credible group; and to discover for yourself if you can really c <a href="http://www.cheapnfljerseys-online.com/">Wholesale NFL Jerseys</a> onserve cash along with earn money at the same time? Wake Up Now appears like a concept who
查看全部回复【已有1位网友发表了看法】

广告投放

广告投放