最终GPS监测网达到了毫米级的高程精度。
In final, the height accuracy of the GPS monitoring network reached millimeter level.
按多目视觉的理论，利用大重叠影像增大交会角，提高高程精度。
With high overlap images, the intersection angles will augment, and the height precision will be improved.
实验结果显示，本文所提出的方法对于改善空载光达的高程精度是可行的。
The results of our experiments show the feasibility of our algorithm to improve the accuracy of heights by airborne Lidar data.
对单个飞行周期内地面目标的绝对高程精度与系统状态参数之间的关系进行了详细分析。
The calculation and simulation programs were also developed. The relations between the ground targets' absolute altitude and system parameters in a single flight period were analyzed in detail.
用实际观测数据对该模型进行了试验，结果表明，用径向基神经网络转换GPS高程精度高于二次拟合法和BP神经网络法。
The model was tested with observed data. The results showed that RBF Neural Network conversion accuracy than Quadratic fitting and BP Neural Network.
对于采用本方法计算淹没区，准确性受地形图等高距大小、数字化采集精度、数字地面模型（DEM）高程精度以及格网间隔大小、像素探测分辨率等因素的影响。
The accuracy of flood area is mostly dependent on the contour interval of map, accuracy of digitizing map, accuracy of DEM, and interval of GRID, detecting resolution of pixels.
相位解缠是SAR干涉测量数据处理中的一个关键步骤之一，解缠结果的好坏直接影响最终数字高程模型的精度。
Phase unwrapping is one of the key steps for the processing of InSAR data. The quality of the unwrapping results affects the final DEM directly.
目的为了提高GPS水准的拟合模型在逼近高程异常曲面时的逼近精度和可信度。
AimIn order to improve approximating precision and reliability of GPS leveling of imitated model in approximating abnormal height curved surface.
如何将GPS大地高转化咸水准高程，并使其保持一定的精度，一直是人们研究的热点。
So it's always a hot topic how to transform GPS ellipsoidal height into level elevation and to keep certain accuracy.
分析结果表明，利用三天线构成的双基线机载干涉SAR是改进相位展开过程、提高高程测量精度的有效方法。
The results show that dual-baseline airborne interferometric SAR using three antennas is an efficient scheme to improve phase unwrapping processing and improve height measurement accuracy.
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.
本文对电磁波测距边投影归算中的高程异常精度问题进行了讨论。
This paper is concerned with the accuracy of height anomaly in the reduction of length projection for EDM.
摘要 ：使用距离多普勒模型进行SAR影象几何校正时，卫星轨道误差、系统成像参数误差和DEM高程的误差会影响几何校正精度。
Abstract : When using the Range-Doppler model for SAR image geometric correction, the error of satellite orbit, imaging parameter and DEM elevation will affect the geometric correction accuracy.
在胶南市应用GPS建立三等平面控制网及高程拟合作业过程中，所采用的数据处理方法提高了平面精度和高程拟合精度。
During the period of establishing third grade plane controlling net and elevation fitting work by using GPS, plane precision and elevation fitting precision are promoted.
大气垂直折光是影响EDM三角高程测量精度的制约因素之一。
Atmospheric vertical refraction is the main factor which affects the precision of EDM trigonometric levelling.
高程异常模型的建立是否合适，对GPS水准高程测量的精度产生重要影响。
Whether elevation abnormality models are built properly has great effects on the precision of GPS level elevation survey.
针对全站仪三维导线的作业方法，讨论了它的精度匹配问题，得出等级平面导线与对应的等级高程导线相匹配的结论。
Aimed at surveying method of three-dimensional traverse, this paper makes research on accuracy matching of three-dimensional traverse by Electrofiic total station.
高精度数字高程模型(DEM)是水土流失规律研究与流域地形空间分析中重要的空间数据。
High accuracy DEMs is an important data in study of soil erosion and terrain feature space analysis.
在数字高程模型(DEM)允许误差的条件下，一定存在最优基线使得DEM精度最佳。
In the condition of acceptable Digital Elevation Model (DEM) error, there must be an optimal baseline which makes DEM precision highest.
三大同步中，相位同步误差直接影响SAR复影像的相位误差，从而影响系统的高程测量精度。
The error of phase synchronization among the three synchronizations will affect the phase error of SAR SLC image directly, and influence the elevation measurement precision sequentially.
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.
GPS高程转换中，大地高的精度将直接影响转换后正常高的精度，为此大地高的粗差探测是比较重要的一个环节。
The accuracy of Orthometric Height will be directly affected by ellipsoidal height precision during GPS height transformation, therefore, the detection of gross error is very important.
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.
实践证明，EDM三角高程观测方法简单、传递高程迅速、受地形条件限制小、精度较高，有广泛的适应性。
Practice shows that EDM triangle elevation observation method is very simple, highly efficient in transmitting of elevation, less influenced by limitation of terrain, accurate and widely suitable.
为提高丘陵地区GPS水准拟合精度，建立适合当地测区的拟合模型，采用多面函数法对高程异常进行拟合。
To improve the GPS leveling fitting accuracy of hilly terrain and to build the adaptive fitting model of the coverage, this article USES the multidimensional function method to fit the height anomaly.
对提高山区三角高程测量的精度有一定的实用价值。
It has a definite value for raising the accuracy of triangulation in mountain area.
同时探讨了短边GPS高程的测量精度，得出了一些有益的结论。
At the same time this paper discusses the survey precision of a short distance GPS altitude, and draws some beneficial conclusions.
在新型快速建井条件下，在竖井导入高程中采用全站仪是一种简便、快捷、低成本、高精度的方法。
In the case of quick construction, the elevation of shaft is measured by means of total-station instrument, which possesses advantages of simplicity, speediness, low cost, high precision.
在新型快速建井条件下，在竖井导入高程中采用全站仪是一种简便、快捷、低成本、高精度的方法。
In the case of quick construction, the elevation of shaft is measured by means of total-station instrument, which possesses advantages of simplicity, speediness, low cost, high precision.
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