geoid height 中文意思是什麼
geoid height
解釋
大地水準面高-
This paper introduces the signif9cance of geoid refining and three methods for refining geoid, and by using the abnormal height of gps / leveling point, sets up several mathematic models of local geoid and makes the experiments and precision analysis
介紹了大地水準面精化的意義和精化大地水準面的3種方法，用gps /水準重合點的高程異常，建立了區域大地水準面的幾種數學模型並做了實驗和精度分析。 -
Based on systematical study of each constituent of iss, the foundation, computation and precision analysis of the models of geoid, sea surface topography, mean sea surface and ocean tide are mainly discussed ; the conceive of mean sea surface height model and ocean tidal model suitable to chinese near sea and its neighborhood is provided ; two kinds of iss model are derived out
本文在系統研究瞬時海面高各組成要素的基礎上，主要討論了大地水準面模型、海面地形模型、平均海平面模型和海洋潮汐模型的建立、計算以及精度評價等問題；提出了建立適於我國近海及鄰域平均海平面模型和海洋潮汐模型的設想；綜合得出了兩種瞬時海面高模型，並進行了精度估計，編制了相應的軟體。 -
Now the 2d precision of spatial points is very great, but because by usual correlation fitting method we can transfer gps ellipsoidal height into normal height of the local geoid is considered as mathematical curve plane, it is not conform the fact of mountainous districts so the precision of elevation is so small that it is not satisfied with the requirement of leveling
目前，地面點的平面位置確定精度已相當高，但高程精度始終未能達到水準測量的要求，因為將gps大地高轉化為水準正常高的擬合推估方法是將局部大地水準面視為數學曲面，常常與實際情況差異較大（特別在西部山區差異更大） 。 -
The geoid is used to be regarded as the theoretic global vertical reference. the actual national height references are regional mean sea levels determined by tide gauge station. the difference between them is apparent
大地水準面作為全球高程測量的理論基準面，在現實工作中，國家或者地區高程系統的起算面是利用驗潮方法來確定局部平均海平面的，兩者之間的差距是顯而易見的。
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