全球定位系统2024，Vol.49Issue(2)：106-110,5.DOI:10.12265/j.gnss.2023160
基于二分法的极化相移反演降雨强度算法
Dichotomy method for inversion of rainfall intensity by polarimetric phase shift of GNSS signal
摘要
Abstract
The function expression of the rain intensity-polarimetric phase shift model is complex,making it difficult to derive an analytical expression for inverting the rainfall intensity.Simulated annealing is an effective method for inverting rain intensity,but it is computationally time-consuming.In response to this problem,a rain intensity inversion algorithm based on the bisection method is proposed.Firstly,the rain intensity inversion problem is transformed into a function zero-point solving problem.Then,the bisection method is employed for model calculation,and a rain intensity inversion algorithm based on the bisection method is presented.Finally,the efficiency of the new algorithm is verified through simulation experiments.The results show that compared with the simulated annealing algorithm,the bisection method can significantly improve the inversion efficiency while ensuring the inversion accuracy,reducing the average required time for each inversion by about 75%.关键词
GNSS/极化相移化/降雨强度/模拟退火算法/二分法Key words
GNSS/polarimetric phase shift/rainfall intensity/simulated annealing algorithm/bisection method分类
天文与地球科学引用本文复制引用
陈铮,唐菲菲,胡川..基于二分法的极化相移反演降雨强度算法[J].全球定位系统,2024,49(2):106-110,5.基金项目
国家重点研发计划课题(2021YFB2600603) （2021YFB2600603）
国家重点研发计划课题(2021YFB2600603) （2021YFB2600603）
重庆交通大学研究生科研创新项目(2022S0086) （2022S0086）
