电波科学学报2018，Vol.33Issue(2)：170-177,8.DOI:10.13443/j.cjors.2017101301
山基GPS掩星观测数据在电波到达角计算中的应用
Application of mountain-based GPS occultation observation data in calculating radio arrival angle
摘要
Abstract
We obtained the data of mountain-based GPS radio occultation and statistically analyzed the occultation events based on the GPS occultation observation experiment on Mt.Tailao of Fujian Province and Mt.Heding of Zhejiang Province.This paper describes an algorithm and principle of calculating atmospheric refractivity and arrival angle.The directly refraction model and the reflection model of radio wave propagation are used to calculate the arrival angle between any two points by using the mountain based inversion data and European Centre for Medium range Weather Forecasts(ECMWF) data to construct the refractivity model.The results show that the inversion accuracy of the atmospheric refractivity profiles is above 95％,and the direct refraction model based on the mountain-based inversion data is better than the reflection model in the short distance calculation at 1 km.The arrival angle model of the mountain-based inversion data is superior to the ECMWF data model.The two types of angle of-arrival calcula tion models has important guiding significance on simulating the propagation path between two points and the reception and adjustment of the real radio signal.关键词
山基GPS/掩星观测/大气折射率/电波到达角Key words
mountain-based GPS/occulation observation/atmospheric refractivity/arrival angle分类
天文与地球科学引用本文复制引用
柳丹,胡雄,吴小成,宫晓艳..山基GPS掩星观测数据在电波到达角计算中的应用[J].电波科学学报,2018,33(2):170-177,8.基金项目
公开研究合作项目(2015001) （2015001）
