光传感器目标识别则是在取得目标的反射特性和辐射特性（光谱）后提取其特征进行识别。
Optical sensor target recognition extracts the characteristic of target to perform target recognition after having acquired its reflection and radiation (spectra) characteristics.
改进基于投影密度的计算，进行地形、地物分离，并提取其特征信息，得到基本的三维激光模型。
Based on the computing of projection density, it separates the terrain and the objects, extracts the feature information, and gains the basic 3d laser model.
如何对这类信号进行有效分析，提取其特征，开发新型的保护装置，一直是电力系统保护技术中的重要研究领域。
How to analyse this kind of signals and draw out their features to develop new protection device is an important research domain in the protection technology of power system all the time.
应用推荐