四川大学学报（自然科学版）2011，Vol.48Issue(6)：1359-1364,6.DOI:10.3969/j.issn.0490-6756.2011.06.024
一种简易的多普勒天气雷达速度退模糊方法
A simple method of velocity dealiasing for doppler radar
刘颖佳 1吴晓红 1王正勇 1何小海1
作者信息
- 1. 四川大学电子信息学院图像信息研究所,成都610064
- 折叠
摘要
Abstract
Wind profile from Doppler radar is an important evidence for weather forecast. In the wind in formation detected by Doppler radar, there exist problems such as noise, data missing and velocity alias ing, therefore,velocity dealiasing is paid more and more attentions. In this paper, a simple method for velocity dealiasing is proposed according to the characteristics of wind profile and practical requirements. In the method, the velocities are dealiased in the tangent directions along the equally distant circles and in the radial directions along the radiations of the radar waves. In the tangent direction dealiasing, first, the velocity data are segmented. Next, the velocity aliasing within a segment and between segments are detected. Then, the aliased velocities are corrected by velocity unwrapping. In the radial direction dealiasing, the velocity aliasing is detected forward and backward from the center of a radiation. Then, the aliased velocities are corrected by velocity unwrapping. Practical dealiasing experiments have been done and show that the method is correct and applicable.关键词
多普勒天气雷达/速度退模糊/速度模糊检测/速度扩展Key words
doppler weather radar/velocity dealiasing/velocity aliasing detection/velocity unwrapping分类
信息技术与安全科学引用本文复制引用
刘颖佳,吴晓红,王正勇,何小海..一种简易的多普勒天气雷达速度退模糊方法[J].四川大学学报（自然科学版）,2011,48(6):1359-1364,6.
