水资源保护2024，Vol.40Issue(5)：11-17,7.DOI:10.3880/j.issn.1004-6933.2024.05.002
基于指数雨胞雨衰模型的微波链路雨强反演方法
A microwave link rain intensity inversion method based on exponential rain cell rain attenuation model
摘要
Abstract
A new microwave link rain intensity inversion method was proposed based on the exponential rain cell rain attenuation model to improve the accuracy of rain intensity inversion.Using measured data from 21 microwave links and 8 rainfall stations within 2 km from the links in Gothenburg,Sweden,rain intensity inversion results of the exponential rain cell rain attenuation model were compared with those of the traditional power-law model and ITU-R P.530-16 rain attenuation model.The results show that the exponential rain cell rain attenuation model performed excellently in rain intensity inversion,with both the determination coefficient and Nash-Sutcliffe efficiency coefficient being 0.78,the mean absolute error being 0.39mm/h,and the root-mean-square error being 0.68 mm/h.The exponential rain cell rain attenuation model has a significant improvement in accuracy and stability compared to the power-law model,and also has an improvement compared to the ITU-R P.530-16 rain attenuation model,especially in rain intensity inversion of short links and small to medium rainfalls.It is also demonstrated that the exponential rain cell rain attenuation model is valuable for further enhancing the accuracy of microwave link rain intensity inversion and improving the effectiveness of precipitation monitoring.关键词
微波雨衰/指数雨胞雨衰模型/微波链路/雨强反演/哥德堡市Key words
microwave rain attenuation/exponential rain cell rain attenuation model/microwave links/rain intensity inversion/Gothenburg分类
天文与地球科学引用本文复制引用
杨涛,沈玉芳,陈渝青,叶文杰,陈曦,张玉松,涂杰,史晓薇..基于指数雨胞雨衰模型的微波链路雨强反演方法[J].水资源保护,2024,40(5):11-17,7.基金项目
国家自然科学基金项目(51879068) （51879068）
国家重点研发计划项目(2018YFC0407906) （2018YFC0407906）
