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- Terrain data simulation 地形模拟
- Walkthrough in massive terrain data is a key technology and difficult problem of GIS, VR, game and simulation, etc. 摘要大范围、海量地形数据的快速漫游是GIS、虚拟现实、游戏、仿真等领域的关键技术与难点之一。
- The data simulation and evaluation subsystem;. 数据模拟和评价分系统;
- The storage and management of massive terrain data is the key of large-scale terrain roaming. 海量地形数据的存储与管理是大规模地形实时漫游系统的关键。
- The primary bug of this algorithm is that it discards the relative position information of terrain data and the normalized processing. 因为地形熵算法丢掉了地形的相对位置信息及对地形数据做了归一化处理,使得其在地形跟随/地形回避中的应用存在着匹配误差容易发散的问题。
- Experimental results on real terrain data show that the algorithm based on one DAG improves the computing performance of an extraction of terrain. 实验表明，基于DAG表示的地形抽取算法利用变化数据间的空间关系提高了计算性能。
- The high precision terrain data in the STK/Terrain modul is used as data sources, which is converted to the OpenFlight format model that Creator or Vega can discriminated . 以STK/Terrain 模块中的高精度地形高程数据作为数据源,将其转换成Creator 和Vega 能识别的OpenFlight 格式模型;
- Data simulation indicates that this algorithm features fast, precise and reliable. 数值仿真表明：此算法计算速度快，辨识精度高，数值稳定性好。
- The model is based on a collection of a divisional terrain data defined as simplicial complexes arranged into a partially ordered set by time and space. 模型把子区域地形几何数据定义为单纯复合形集，按地形变化时间顺序和空间关系组织成一个偏序集。
- The effects of process parameters on PP fiber diameter were analyzed by computer data simulation. 通过计算机数值模拟的方法分析了工艺参数对聚丙烯(PP)纤维直径的影响。
- Another new element is the 'threat intervisibility' system.This system allows for terrain data and known enemy field positions to be plotted on a grid map. 另外一个新组件是“威胁可视化“系统，这一系统可以在网格地图上绘出地形数据和已知的敌人野外驻点。
- Divided metadata cluster provides high-effective and high-availablemetadata service, and OSD cluster with parallel terrain data transmission provides high t... 这类系统对地形绘制的效率有很苛刻的要求,需要高效的地形绘制算法和数据调度策略。
- In this paper, the new formula of the azimuth resolution for spaceborne spotlight SAR. is presented, and the data simulation results validate the validity of the new method. 该文给出了适用于星载聚束模式合成孔径雷达的方位向分辨率的计算方法，数据模拟结果验证了方法的难确性。
- The achievements of this thesis can besummarized as fOllows:Present a simple description of DTM(Digital Terrain Model) and the technology ofterrain modeling with reguIar and irregular terrain data. 1）在对数字地面模型建模方法进行简要小结的基础上，对基于规则格网和不规则三角网的地形建模技术进行了研究。
- The statistical fractal features of the original coarse terrain data set were determined through linear regression, based on which a denser terrain can be derived by means of bilinear interpolation. 首先通过线性回归得到原始稀疏三维地表数据的分形统计特性，再以此特性??基础采用双线性插值的思想来构造更??稠密的自然地貌。
- In this dissertation, focused on the aerial image matching based terrain data acquisition and DEMs based digital terrain analysis, some theory, approach and key technical problem of digital terrain modeling are discussed. 本论文围绕着数字地形模拟的相关理论方法和关键技术问题进行了讨论，其中重点研究了基于航空遥感影像的地形数据获取和基于DEM的数字地形分析问题。
- The task selects the up to the minute mesoscale numerical model as our forecasting model and use thrice fixed nesting and terrain datum of down to dale (highest precision data of 30s) as our terrain datum in the endothecium. 本文选择了当今最为先进的中尺度数值模式MM5V3作为数值预报模式，采用三层固定网格嵌套，选用其最新提供的30S高精度资料作为内层重点考察小区的地形资料。
- The realization of location using the difference of doppler frequency is discussed, the formula for the location error is derived and its simplification form with data simulation is presented. 讨论了多普勒频率差定位技术的实现方法，推导了定位误差公式，并给出了实际使用时的简化而直观的形式，同时进行了数值模拟.
- I’ll demonstrate how to use this algorithm to statically tessellate an array of height data that can be used for geometric terrain data, terrain texture maps, and cloud texture maps. 这是一种方式，另一种方式是，自己出牌后，首先更新自己的桌面，显示出牌，同时发送给服务器，服务器只要将出牌数据发送给其余的玩家。
- From the data simulation, the feasibility of the steady work of HVU and the wobbling feature of its output voltage with the change of other parameters can be theoretically obtained. 通过数值模拟，可以从理论上预言高压单元工作点的稳定性以及输出电压随其他参数波动式的变化。
