其中与平均海平面重合的面就是大地水准面。
Which coincide with the mean sea level surface is the geoid.
讨论了表面垂直位移和重力变化对大地水准面高变化的影响。
The effects of surface vertical displacements and gravity changes upon the geoidal height variation have been also discussed.
物理大地测量的主要目标是确定地球外部重力场和大地水准面。
The main purpose of physical geodesy is to ascertain the outer Earth gravity field and geoid.
数据分辨率是影响地球重力场建模和大地水准面精度的重要因素。
Data resolution has an important effect on modeling the earth's gravity field and the accuracy of the geoid.
本发明公开了一种基于扰动重力的似大地水准面陆海无缝拼接方法。
The invention discloses a disturbing gravity-based quasi-geoid land-sea seamless splicing method.
该模型与EGM96相比（70阶次），大地水准面起伏差异最大为2。
The maximum difference of geoid undulation between the model and EGM96(to 70 degrees) is 2.
区域精化似大地水准面在全国多个地区已经建立，同时也得到了广泛应用。
The local refined Quasi-Geoid has been constructed in several regions and widely applied.
利用TOPEX资料可以得到新的地球引力场、海洋大地水准面和海潮模型。
Using TOPEX altimeter data, a few new earth gravity models, geoid models and ocean tide models were generated, and these models were better than old models.
动态改变大地水准面差距与地球半径的比值，改善了地球形状的三维表达效果；
Dynamic changing the scale of geoid undulations and the radius of the earth, the video mode of the earth figure is improved.
将地球位模型计算的阜新似大地水准面拟合于GPS水准实测的似大地水准面。
The quasi-geoid computed by geopotential model is fitted with the quasi-geoid measured by GPS leveling.
图上精确的地球大地水准面是根据洋流、海平面的变化和地球冰川等元素的精确数据测量而成。
A precise model of Earth's geoidis crucial for deriving accurate measurements of ocean circulation, sea-level change and terrestrial ice dynamics.
介绍统计学习理论和支持向量机，提出利用支持向量机技术进行似大地水准面拟合。
This paper introduces statistical learning theory and support vector machine, proposes a new method, support vector machine technology, to simulate quasi-geoid.
一般说来，水准测量测出的大地水准面高程的精度，远远超过任何其它方法的精度。
In general the accuracy of geoidal heights, as given by spirit levelling, much exceeds that of any other system.
利用成都市似大地水准面模型探测和分析了两个传统高程控制网中可能存在的系统偏差。
The systematic bias of the two traditional vertical network was detected and analyzed by use of Chengdu quasi-geoid.
这个新的大地水准面地图对于研究海洋环流、海冰动力学，海平面变化和地震会是有用的。
The new geoid map will be useful for studying ocean circulation, ice dynamics, sea-level change and earthquakes.
测高大地水准面反映了研究区板块相互作用的特点，其高频成分可以刻画各海盆的构造特征。
The altimetry geoid undulation is mainly conducted by convergence between two or three plates, and its components at short wavelength characterize tectonics within basins.
图上精确的地球大地水准面是根据洋流、海平面的变化和地球冰川等元素的精确数据测量而成。
A precise model of Earth's geoid is crucial for deriving accurate measurements of ocean circulation, sea-level change and terrestrial ice dynamics.
所采用的正常高残差拟合方法，既顾及了似大地水准面模型的几何特性，又顾及了其物理特性。
Residuals used in normal fitting method, not only takes into account the quasi-geoid model for the geometric properties, but also take into account its physical properties.
依据岩石圈弹性挠曲均衡补偿理论建立地形-均衡补偿重力、大地水准面异常的球谐级数表达式。
Base on theory of lithosphere elastic flexure isostatic compensation, the spheric harmonic series expressions of topography-isostasy compensation gravity and geoid are established.
结果表明，菲律宾海和南海显示了与磁条带、扩张脊对应或斜交的高频成分大地水准面起伏条带。
The results show that within the Philippine Sea and the South China Sea, short - wavelength lineations of the geoid undulation are parallel or cross to magnetic lineations and rifting ridges.
影响高原山区大地水准面起伏变化的主要原因是地形的剧烈变化，地形量和岩石密度分布的不均匀。
The main factors to influence the Geoids rising and falling of the mountainous districts are the acute change of the landform and the asymmetry of the mass of landform and the density of rocks.
基于此，扼要提出应用重力大地水准面法、几何大地水准面法和综合法将GPS椭球高改化为正高的方法。
This paper puts forward, in the point, gravimetric geoid method, geometric geoid method and synthesis method to transform ellipsoid height into orthometric height.
并利用我国河西地区1992 - 2003年的重复重力观测资料对该地区的大地水准面变化进行了计算研究。
He-Xi geoid's changes is calculated and researched with the gravity variation data in the period from 1992 to 2003.
另外，采用阻尼最小二乘方法，利用全球地震层析成像资料和大地水准面异常资料联合反演了三维全球地幔密度异常。
Moreover, The authors inverted three dimensional global mantle density (anomaly) combining geoid data and seismic tomography data by means of damping least square method.
就长距离超高压送电线路工程的GPS测量中如何选择大地水准面模型，如何确定GPS测量的高程等问题进行了讨论。
This paper has discussed how to select geoidal model and how to determine normal height in GPS survey of long distance transmission line project.
利用WDM94模型编制了华北地区不同阶次的大地水准面起伏图，讨论了大地水准面起伏和该地区构造横向不均匀性的关系。
The geoid undulation diagrams in different degrees are mapped by WDM94 model. The relationship between the geoid undulation and the lateral inhomogeneity of regional tectonics is discussed.
利用GPS水准对模拟大地水准面进行约束，采用“移去——恢复”技术和多面函数法进行拟合内插，得到转换后的大地水准面。
The GPS-levelling is used to add constraints on the simulated geoid, and the "remove-restore" method and the multi-quadric function method are used to interpolation, so as to obtain the refined geoid.
利用GPS水准对模拟大地水准面进行约束，采用“移去——恢复”技术和多面函数法进行拟合内插，得到转换后的大地水准面。
The GPS-levelling is used to add constraints on the simulated geoid, and the "remove-restore" method and the multi-quadric function method are used to interpolation, so as to obtain the refined geoid.
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