空间科学学报2026，Vol.46Issue(3)：692-706,15.DOI:10.11728/cjss2026.03.2025-0213
风云气象卫星与商业卫星的掩星分布与协同观测
Occultation Distribution and Collaborative Observations of Fengyun Meteorological Satellites and Commercial Satellites
摘要
Abstract
GNSS Radio Occultation(RO)serves as a key technique for constructing a global high-pre-cision atmospheric and ionospheric sounding capability.China's operational Fengyun-3(FY-3)RO sys-tem produces data of exceptional quality,characterized by high accuracy,stability,and standardization,making it the current accuracy benchmark in RO sounding.However,due to its orbital configuration,the FY-3 system alone still exhibits coverage gaps in equatorial and polar regions.In recent years,the rapid development of commercial constellations such as Tianmu and Yunyao has enabled multi-source RO cooperative observations,offering a promising approach to enhance the spatiotemporal density of RO data.Based on RO measurements from the FY-3,Tianmu,and Yunyao constellations,this study sys-tematically evaluates the spatial distribution characteristics and joint observation benefits of the three systems.Results demonstrate that integrating commercial constellations significantly increases the num-ber of global RO events and improves coverage at low and high latitudes.Local time coverage is also en-hanced from segmented intervals to nearly continuous throughout the day.Despite the considerable im-provement in observational density,data overconcentration in certain mid-latitude areas and small-scale gaps under high-resolution analysis remain,indicating that orbital configurations and constellation coor-dination require further optimization.This study provides quantitative references for the future collabo-rative development of China's FY-3 and commercial RO constellations.关键词
GNSS无线电掩星/风云气象卫星/商业卫星星座/联合观测/轨道布局Key words
GNSS radio occultation/Fengyun meteorological satellites/Commercial satellite constellation/Joint observation/Orbital configuration分类
信息技术与安全科学引用本文复制引用
鲁文强,胡秀清,赵现纲,孙越强,陈冉,徐娜,孟祥广,廖蜜,刘艳,唐琪,程艳,杨光林..风云气象卫星与商业卫星的掩星分布与协同观测[J].空间科学学报,2026,46(3):692-706,15.基金项目
国家自然科学基金项目资助(U2442216) （U2442216）
