雷达图像运动矢量场计算

多普勒天气雷达是强对流天气监测和预警的主要工具。基于能够达到准确预报天气的目的,需要计算雷达图像的运动矢量场,因此在全局约束光流算法和L-K算法的基础上,本文提出了一种计算雷达图像运动矢量场的详细算法,这种算法能有效加快运算时间,同时又能保证运算结果的有效性。其中包括图像预处理方面的内容,并给出了处理过程中所需的较好的参数。并通过天津地区雷达图像数据的大量实验,确定此算法能够较为准确的计算出雷达图像的矢量场,从而可用于天气预报的过程之中。

The calculation of radar image motion vector field

Doppler weather radar is the main tool of strong convective weather monitoring and warning. In order to achieve the purpose of accurately forecast the weather,we need to calculate the radar image motion vector fields, in this paper,a new detailed algorithm of calculating the radar image motion vectors was put forward based on global constraints optical flow algorithm and L-K （Lucas and Kanade） algorithm which included the aspect of the image preprocessing, and gave good parameters in the process of the algorithm.This algorithm. This algorithm coulde effectively speed up the calculation time, and at the same time, could guarantee the effectiveness of the operation result.And through a lot of experiments for TianJing radar image datas, we could confirm that the algorithm could more accurately calculate radar image motion vector field, which could be used in the process of the weather forecast.