plus/minus specification

The plus and negative induced polarization method used in ground water surveying and its effectiveniss are introduced with typical examples exemplified.

本文通过实例介绍了正负极极化法配合其他物探方法在找水工作中的应用及效果。

Polar-exponential grid technique maps the image in Cartesian coordinate into polar-log coordinate.

该方法采用极指数栅格技术和傅立叶变换相结合得到目标的轮廓不变量 ;用神经网络结合方面图技术 ,通过识别运动目标图象序列来识别三维运动目标 ,实现了一个目标识别系统 。