全球定位系统Issue(5)：1-7,7.DOI:10.13442/j.gnss.1008-9268.2014.05.001
地基GPS与掩星联合的电离层层析成像方法研究
Computerized Ionospheric Tomography Combining with Ground-based GPS and Radio Occul tation
摘要
Abstract
Due to the limited-angle geometry and sparse receiver of the ground-based GPS observations ,computerized ionospheric tomography (CIT) with ground-based GPS will leads to lower vertical resolution of the electron density ,combining radio occultation obser-vations is able to solve this problem .As one side ,ground-based GPS can ensure the tempo-ral continuity and spatial coverage of the CIT ,the other side ,horizontal radio occultation da-ta provide the ray information that is not available from angle-limited ground-based GPS , which will improve the vertical resolution of the CIT .Gound-base GPS stations and radio oc-cultation from COSMIC satellites were selected for CIT simulation .Comparison between on-ly ground-based GPS CIT and combined method show that the combined method not only has higher precision in electron density but also in ionospheric F2 layer peak height (hm F2 ) and total electron content (TEC) .关键词
地基G PS/掩星/电离层层析成像/电离层F2 层峰值高度/电离层总电子含量Key words
computerized ionospheric tomography/ground-based GPS/radio occulta-tion/hm F2/T EC分类
天文与地球科学引用本文复制引用
欧明,甄卫民,徐继生,刘钝,於晓..地基GPS与掩星联合的电离层层析成像方法研究[J].全球定位系统,2014,(5):1-7,7.基金项目
科技部国际科技合作专项（编号2011DFA-22270）；地震预测所基本科研业务专项 （）
