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   地形转换 的翻译结果: 查询用时:0.185秒
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自然地理学和测绘学
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地形转换
相关语句
  terrain conversion
     The emphases is discussing Polymesh, Delaunay, CAT and TCT terrain conversion arithmetic which are provided by Creator.
     重点讨论了Creator提供的Polymesh、Delaunay、CAT和TCT四种地形转换算法选择。
  “地形转换”译为未确定词的双语例句
     Firstly, the paper introduces distributed application structure of UAV simulation system, secondly, making using of algorithm of AOI, LOD and TTM, it converts and schedules the terrain, then it controls the flight using the collide detection and external manipulation. At last, we provide the instance and analyse the realtime capability of the system.
     该文首先介绍了UAV低空突防视景仿真的分布式程序结构,然后利用场景调度算法(AOI),动态连续变换算法(LOD)和纹理映射算法(TTM)进行地形转换和实时的地形单元调度,并根据碰撞检测和外部操纵来控制UAV的半自动飞行,最后给出了UAV低空突防视景系统的仿真实例,分析了仿真系统的实时性能。
短句来源
     Finally,a suggestion to plant buffer on the zones between hilI topand hill slope and hill slope to gully slope was put forward so as to control soil erosion andimprove landscape connectivity.
     建议在沟间地生态敏感的地形转换带种植灌木林,建立生态廊道,提高多样住,控制水土流失,增强景观连接性。
短句来源
     Four conversion algorithms for Creator terrain generating are introduced in this paper, and then the terrain generating process on Multigen Creator is discussed.
     重点介绍了Creator软件地形转换的四种算法;
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  相似匹配句对
     TRANSFERENCE OF POTENTIAL FIELD ON UNEVEN SURFACE
     起伏地形上的位场转换
短句来源
     Research on Digital Topography Model Conversion Algorithm
     数字地形模型转换算法研究
短句来源
     Landform Architecure
     地形建筑
短句来源
     (5)Topography;
     (5)地形
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     Transforming Bridge
     转换
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This paper describes a two-dimensional elastic cloud model by using a terrainfollowing coordinate transformation, which can be used to simulate the development of convective cloud over irregular lower surface. The model is tested from two aspects.First, the initialization or start-up procedure is testd. The results indicate: as long as the initialization time scale is larger than 2 * PAI/N (PAI= 3. 14156, N the Brunt Vaisala Frequency), this time scale only affects the strength of the convective cloud, and...

This paper describes a two-dimensional elastic cloud model by using a terrainfollowing coordinate transformation, which can be used to simulate the development of convective cloud over irregular lower surface. The model is tested from two aspects.First, the initialization or start-up procedure is testd. The results indicate: as long as the initialization time scale is larger than 2 * PAI/N (PAI= 3. 14156, N the Brunt Vaisala Frequency), this time scale only affects the strength of the convective cloud, and doesn't affect the developing trend of the convective cloud.Second, the influence of upslope and downslope on the development of convective clound is simulated. It is found that: 1. An upslope can promote the development of cloud validly, and can produce convective cloud as long as the temperature and humity condition is adaptable; 2. A downslope can restrain the development of convective cloud.The results prove: the model is stable and reliable, and is our work base for simulating convective cloud in future.

本文通过应用地形转换坐标,建立了一个能够模拟复杂地形上对流云发展的二维非静力的弹性模式,并对以下几个方面进行了模拟实验:首先对初始环境场的调整适应过程进行了模拟研究,得到:在有对流云发展的情况下,只要调整适应时间大于一个浮力振荡周期(即2π/N),则此时间尺度的大小只对对流云的发展强度产生影响,而对其发展的趋势影响不大。然后我们对下述过程进行了模拟:①地形抬升对积云的触发作用;②上坡环流对已发展对流云的加强;③下坡环流对已发展对流云的减弱。模拟结果表明,模式是稳定的、可靠的。上述模拟研究为我们今后深入开展强对流云数值模拟工作打下了基础。

he agricuitural landscape is a mosaic of natural and human-managed patches that varyin size,shape and arrangement.These spatial patterns in the landscape may influence a vari-ety of ecological phenomena. Therefore,the analysis of landscape spatial patterns is an important component of understanding ecological dynamics. A geographic information system(GIS),fractal analysis,and statistical methods were used to examine the spatial patterns ofagricultural landscape in the loess area of China. 1:10000 land use map...

he agricuitural landscape is a mosaic of natural and human-managed patches that varyin size,shape and arrangement.These spatial patterns in the landscape may influence a vari-ety of ecological phenomena. Therefore,the analysis of landscape spatial patterns is an important component of understanding ecological dynamics. A geographic information system(GIS),fractal analysis,and statistical methods were used to examine the spatial patterns ofagricultural landscape in the loess area of China. 1:10000 land use map of study area was dig-itized for analysis,ten land use categories were included:irrigated farmland,check-dam farm-land,terrace farmland,slope farmland,orchard,grassland,bush,forest,reservoir and residen-tial land.The size of patches,fractal dimension of patches,patch elongation index,diversity,dominance,relative richness and fragmentation index of landscapes of gully and between gul-ly were calculated by models and GIS.Along with the increase of patch area,the shapes offarmland and forest patches have a change tendency from simple to complex,the shapes ofgrassland vary at random. Finally,a suggestion to plant buffer on the zones between hilI topand hill slope and hill slope to gully slope was put forward so as to control soil erosion andimprove landscape connectivity.

景观空间格局分析是景观生态学研究的核心问题之一。本文用地理信息系统、分维分析和统计分析相结合,以1:1万土地利用现状图为基础,选取斑块大小、分维数、斑块伸长指数、多样性、优势度、相对丰富度、破碎度等指标,研究了陕北米脂县泉家沟流域农业景观的空间格局。结果显示,乔木林地、坡耕地、果园、草地和梯田农地的分维数较低,坝地、水库、灌溉农田、居住用地和灌木林地的分维数较高,斑块形状较为复杂。随着斑块面积的增加.农地(包括坝地、灌溉农田、梯田农地和坡耕地)的分维数呈波浪式微弱增加.草地的分维数呈波浪式摆动,林地(乔木林和灌木林)的分维数呈上升趋势。通过对沟间地和沟谷地样地景观空间格局的比较研究,得出沟间地景观多样性、相对丰富度、破碎度低,优势度高,沟谷地多样性、相对丰富度、破碎度高,优势度低。建议在沟间地生态敏感的地形转换带种植灌木林,建立生态廊道,提高多样住,控制水土流失,增强景观连接性。

This paper discribes InSAR image processing methods and presents a new approach for phase unwrapping of InSAR.The method has advantages of stability and less error.By using the method there is not error propagation and there will be no global errors.In addition,the method to estimate terrain height for InSAR is also put forwards.The method improves the accuracy of relation between phase difference and terrain height.At last,by using the L band data of SIR\|C of Three\|Gorge area of China,the relative digital...

This paper discribes InSAR image processing methods and presents a new approach for phase unwrapping of InSAR.The method has advantages of stability and less error.By using the method there is not error propagation and there will be no global errors.In addition,the method to estimate terrain height for InSAR is also put forwards.The method improves the accuracy of relation between phase difference and terrain height.At last,by using the L band data of SIR\|C of Three\|Gorge area of China,the relative digital elevation model of local area is obtained.

通过对干涉合成孔径雷达( Interferom etic S A R)成像处理中解相位模糊和地形转换问题的研究,给出了一种有效的相位解模糊的方法,该方法具有良好的稳定性和较小的误差,且无误差传递。另外,提出了一种如何将干涉相位转换成地形高度的方法,该方法提高了干涉相位与地形高度之间的转换精度。利用美国 N A S A 提供的三峡地区的 L 波段的 S I R C的并行轨道数据,结合所提的方法,得到了局部区域的相对高度图。

 
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