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A method of the ground object target simulation of SAR(Synthetic Aperture Radar) raw signal was discussed. 分析讨论了一种合成孔径雷达成像三维地物目标模拟的方法。
Three factors of image information, namely gray, texture and edge, are the basic factors which reflect the reliability of ground objects. 而图像信息理解的三要素，即灰度、纹理和边缘，是卫星图像反映地物的可信度的基本要素。
The imaging fundamental of SAR was expatiated and the raw echo signal model of complex three-dimensional ground object target was established. 阐述了复杂三维地物目标模型的建立方法,分析了回波信号的结构并且讨论了成像仿真参数。
The simulation parameters of SAR system were given and the imaging of the complex three-dimensional ground object target was finished. 最后完成了对三维复杂地物目标的成像仿真实验,得到了较为理想的结果。
The color signal images corrected by Rayleigh Scattering are close to true color photography in ground. , laypeople can judge usual ground objects based on color and shadow of ground objects. 经瑞利散射纠正后的色彩信号图像接近于地面真彩色摄影，非专业人员能根据地物颜色及阴影判读出常见地物。
The color signal images which did not carry on correcting the atmosphere are equal to the space photographs to the ground, the ground objects are covered with blue mist which is formed by Rayleigh Scattering. 未进行大气校正的色彩信号图像等效于太空对地摄影，从图像可看出，地物被笼罩在瑞利散射形成的蓝色“云雾”下。
This paper outlines the imaging principle of HIRS, explains how the temperature marking system works for measuring the temperature data of ground objects, and summarizes main factors influencing the image quality of HIRS. 本文主要介绍热红外遥感的成像原理，它的温度标定系统是如何测得地物的温度信息的，以及热红外遥感成像质量的主要影响因素。
Based on the analysis of NDWI, and according to various spectral characteristics of ground objects in the ASTER image, this thesis puts forward NDWIASTER1、4 on the basis of the ASTER image. 在分析归一化差异水体指数的基础上,根据ASTER数据不同地物的光谱特征,提出了基于ASTER数据的归一化差异化水体指数NDWIASTER1、4。
Shift-D Increase visible range of ground objects 增加地面物体的可视范围
The fox went to ground under a rocky escarpment. 狐狸钻进了石崖下面的洞里。
Ctrl-D Decrease visible range of ground objects 减少地面物体的可视范围
The ground was covered with ferns. 地面上长满了羊齿植物。
He lifted a pail of water from the ground. 他把一桶水从地上提了起来。
Rachel who died last week was still above ground. 雷切尔上星期去世，现在还没安葬。
This car really comes into its own on rough ground. 这辆汽车在颠簸的路上才真正显示出它独特的性能。
They put some wreathes on the ground. 他们把一些花环放在地上。
The ground was ploughed and planted with corn. 地翻耕后种上了玉米。
He takes his ground on intuition. 他的意见是凭直觉。
classification of ground object characteristics 地物特征分类
We need a mechanical digger to level the ground. 我们需要一台挖掘机来平整土地。