This paper briefly introduces the concept of bidirectional reflectance and its relation to 3-d spatial structure of ground objects.
本文简要介绍了地物二向性反射的概念及其与地物三维空间结构之间的关系。
Spectral characteristic is one of the basic characteristics of ground objects, and is the basis of qualitative and quantitative remote sensing.
波谱特性是地物目标的基本特性之一，是定性、定量遥感的基础。
So this paper employs a new calibration method by using vertical ground objects.
因此本文采用一种基于地面垂直目标的标定方法。
The ground resistance of regularly-shaped and irregularly-shaped ground objects are tested with simulation experiments.
利用模拟实验测试了形状规则和不规则接地体的接地电阻。
Numerical simulation results show that this method can produce a microwave image of the ground objects with high spatial resolution.
研究结果表明，使用该方法可以获得被观测地域的高空间分辨率图像；
When the aperture diameter of an optical system is fixed with the same orbit height, the resolution of ground objects can be improved by increasing the focal length.
当光学系统口径一定时，在相同的轨道高度条件下，增大焦距可以提高地面分辨率，增大系统的视场角可以扩大对地面的覆盖宽度。
Non-precipitation echo from radar such as ground objects echo and super refraction and so on are important to explore quantitatively precipitation and the other products.
地物和超折射等非降水回波是影响雷达定量探测降水和其他产品的重要因素，利用降水和非降水回波反射率三维结构特征可以对雷达数据进行质量控制。
It is possible to acquire the height information of three-dimensional ground objects because of the imaging sensitivity of this method to the height difference of ground objects.
合理利用微波散射成像对地物目标高程分布的敏感性，可能获得三维目标的高度信息。
Microwave radiometer is the core equipment of passive microwave remote sensing and a powerful tool for ground objects radiation detection, imaging and characteristics recognition.
微波辐射计是无源微波遥感的核心设备，是进行地物背景微波辐射特性探测、成像和判断的主要工具。
Slope photography usually lead to big geometrical distortion on ground objects, which is difficult to use traditional Mosaic method on digital image with slope photography Mosaic.
倾斜摄影往往导致地物较大的几何变形，难以直接利用传统的数字图像镶嵌方法进行镶嵌。
In vertical ground objects based approach, vertical vanishing point and the plane vanishing line can be obtained by top-points and bottom-points of vertical objects (always, human).
基于地面垂直目标的标定方法，由垂直目标(人体)的头顶点和脚底点得到垂直消失点和水平消失线。
Ground objects can be effectively recognized by gray co-occurrence vector and gray co - dimension feature vector with BP neural network and Bayesian network, recognition rate of 70%.
利用灰度共生纹理特征向量和灰度共生-差分维数联合特征向量结合BP神经网络和朴素贝叶斯网络都能对地物进行有效识别，识别率在70%以上。
Ground objects can be effectively recognized by gray co-occurrence vector and gray co - dimension feature vector with BP neural network and Bayesian network, recognition rate of 70%.
利用灰度共生纹理特征向量和灰度共生-差分维数联合特征向量结合BP神经网络和朴素贝叶斯网络都能对地物进行有效识别，识别率在70%以上。
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