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。

youdao

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。

youdao

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。

youdao

Lotto's lab in London proves this by having blindfolded test subjects locate objects on the ground by guiding them with sound.

FORBES: Magazine Article

There was the deliberate deposition of unusual objects in the ground.

BBC: Discovering Britain��s prehistoric stone circles

Many residents remained jittery Sunday because of continuing aftershocks, said Mendoza, who added that she scrambled out of her home like other villagers when the ground started to shake and objects fell from shelves.

NPR: Quakes Kill 2 In Taiwan, Injure 33 In Philippines