angle of depression

The analysis results of the produce of shadow and the relation among the height of target, depression angle of radar and shadow show that it is possible to extract 3-D geometric features extraction from SAR target in high-resolution SAR imagery.

分析了目标阴影产生的原因，给出了目标高度与雷达俯仰角和阴影的关系，指出在高分辨SAR图像中可以基于阴影提取目标三维几何特征。

Based on the principles of space analytical geometry, methods for computing the coordinates of the center of cutting disc, its angle of depression and elevation, angle of lateral swing and angle of twist are derived.

根据空间解析几何原理，推导出盾构机刀盘中心三维坐标以及俯仰角、横摆角、扭转角的计算方法。

Based on positive study and theoretical analysis, from the angle of income, this article probes the major cause of long-term depression of residents' consume and considers the increasing-wide income gap between residents in city and in urban is the hardest restriction to consume demand.

本文通过实证研究和理论分析，从收入角度探索了我国居民消费持续走低的根源，认为相对收入因素即城乡居民收入二元性格局的加强是制约消费回升的主要障碍。