由于地形地貌的复杂性，地形高程点的数据量往往很大。
There always have a large number of terrain points in GIS because of landform's complexity.
通过矢量化提取等高线和高程点作为基础数据，构建三维地形。
Contour lines and elevation points are obtained by vectorization as basic data, which can be used to build three-dimension terrain.
介绍了通过离散高程点，创建DEM，自动生成等高线的程序设计方法。
Establishment of DEM and program design method of isohypse produced automatically by discrete spot height are presented.
为了测图的需要，所有由仪器测定的散列高程点，均可列入高程点这一名称。
For mapping purposes all scattered heights fixed by instrument may be grouped under this heading.
论述了一种基于大规模格网数据或离散高程点动态构建多分辨率地形模型的算法。
This paper presents a dynamic construction algorithm for the multi-resolution terrain model based on the large scale GRID data or discrete elevation data.
在GPS高程转换中，为了减少对已知高程点的需求量，本文引用了地球重力场模型。
This paper deals with the application of earth gravity field model in GPS height transformation in order to decrease the demand in bench marks.
由离散高程点建立的三角网d TM，能够在多方面应用。如生成等高线、建立地面模型、计算土方量等。
Triangle network DTM building with concrete height points can be used for various aspects, e. g. generating contours, building surface model and calculating earthwork, etc.
由离散高程点生成的TIN同样也具有相当大的数据量，这严重制约了TIN的分析、三维可视化等处理速度。
TIN composing discrete terrain points almost has the same amount of spatial data as it is and the response time of analysis and 3d visualization becomes too long to wait for.
针对传统地形图缩编中高程点抽稀存在的问题，提出基于特征点的高程点抽稀的方法，使用此方法一方面可以保留特征点处的高程点，另外可以实现高程点的自动抽稀。
Aiming at the existed problem of sparsing elevation points in traditional topographic map generalization, this paper presented the sparsing method for elevation points based on feature points.
针对传统地形图缩编中高程点抽稀存在的问题，提出基于特征点的高程点抽稀的方法，使用此方法一方面可以保留特征点处的高程点，另外可以实现高程点的自动抽稀。
In view of REM and height for suspending points, this paper points out the methods that solve practical problems, and provides the theory basis for the practical application.
最后还有重要的一点，你在练习上投入的多少决定了你的提高程度。
Last, but not least, it? S the amount of dedicated training you? Ve put in that will decide.
机载激光点云数据滤波是获取高精度数字表面模型和数字高程模型的关键。
Airborne lidar point cloud filtering is the key of acquiring DSM and DEM with high precision.
对于航摄像对，可以直接通过像对解算像点的地面点高程，进而制作影像重叠区的正射影像。
For aerial photograph pair, the Orthophotomap of the image - overlapped region can be made by calculating directly spot height at image point.
一个经公认的已知值，如基点或海平面的高程，其它点的测量值根据该点的值进行校正。
An agreed and known value, such as the elevation of a benchmark or sea level, to which other measurements are corrected.
利用已有的丈量控制点对原地面高程进行放样，确定开挖深度。
By means of the existing measurement control points on the ground elevation for lofting, determine the excavation depth.
水准联测点的分布状况对GPS高程的拟合精度有明显影响。
The distribution of the GPS leveling points obviously affects the accuracy of interpolated GPS height.
本文推导了星载测定外方位元素参与下，无地面控制点卫星摄影测量高程误差估算公式。
This paper deduces elevation error estimating formulae of the satellite photogrammetry, which is concerned with elements of exterior orientation that measured by spaceborne sensors.
采用网格索引来组织地形数据，利用反距离高程加权平均值算法，提取TIN地形的特征点。
Terrain data is organized by grid, the article adopts height weighted average algorithm of elevation based on grid network, to extract feature point of TIN terrain.
采用了地性特征点和地性线参与三维建模的方法，提高了数字高程模型DEM的地形逼真度。
Terrain fidelity of digital elevation model (DEM) can be enhanced by integrating terrain character points and terrain lines in the three dimensional model.
本文提出了用加权平均值法，求定山区GPS点的高程异常，并提出了两种定权方法。
This paper presents the determination of the elevation anomaly of GPS point in mountainous area, using the method of weighted average values. Also, it gives two methods to determine the weights.
分析了单向光电三角高程测量的误差来源，在此基础上推导了最佳测站位置离测点的平距公式。
Based on the error resource analysis in one-way photoelectric triangulated heigh survey, the horizontal distance equation is drawn for optimal station away from survey point.
介绍当今确定天文大地垂线偏差的新仪器———CCD自动天体测量仪和确定两点间高程异常差的新方法。
A new means of determining astro geodetic deflection of the vertical CCD automatic astrometer and the new method to determine the difference of height anomalies between two points are described.
出让宗地空间范围是以上述界址点所构成的垂直面和上、下界限高程平面封闭形成的空间范围。
The spatial extent of the assigned land refers to the closed space formed by the above-said boundary points posed by the vertical plane and the upper and lower elevation level.
本文用两种不同的数学方法解决国家体育场斜(扭)柱在任意高程上柱角点三维坐标计算问题，对斜柱现场放样的方法进行阐述。
The different mathematical methods were used to calculate the three dimensional coordinate of the national stadiums raking columns, and the setting out method of the raking columns was elaborated.
网格图是通过网格点的不同颜色表示不同高程的图形。对于网格点稠密的图形，用网格图可以表达出图形的全部特征。
Signifying different elevation with different color of grid nodes, grid picture can express all characteristic of terrain in density grid.
它先产生一个包含插值点在内的内插三角形，然后利用此三角形来内插插值点高程；
The elevation of the point can be interpolated by means of the triangle first.
利用程序计算出网格中心点对应的地表高程，以及网格中心的高程。
With this program, it can calculate the elevation of grid cell and the elevation of surface.
测点统计模型是一种静态分析方法，用来建立测量点的高程和坡度与岸滩冲淤的关系。
Statistical survey model is a static analysis, which can be used to establish the relationship between the erosion and deposition of the shoal and the altitude and slope of survey spot.
为计算地面上具有高程的两点间的大地距离，构造了一个过两已知点的新椭球，确定出了新椭球的有关参数，在此基础上给出了计算大地距离的非迭代法和大椭圆法，并与传统方法进行了精度比较。
In order to calculate the geodetic distance of two points that are far from the refernced ellipsoid, a new ellipsoid which passes the two points is constructed, then its parameters are determined.
厦门景观格局形成机制与高程、坡度等自然因素，以及距公路远近、居民点面积等社会经济因素有较大关系。
Forming mechanism of landscape pattern in Xiamen city is related to elevation, slope, the nearest distance to the highways, industrial and mining sites, the area of residential sites.
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