全球定位系统2024，Vol.49Issue(5)：10-18,119,10.DOI:10.12265/j.gnss.2024076
基于SHAKING方法的北斗星基增强系统电离层模型可用性分析
Improvement of ionospheric availability for BeiDou satellite-based augmentation system based on SHAKING method
摘要
Abstract
The BeiDou Satellite-Based Augmentation System(BDSBAS)provides ionospheric correction and integrity monitoring services for users in China and surrounding regions through domestic monitoring stations.Therefore,it demands high availability of ionospheric algorithms.This paper utilizes the adjusted spherical harmonics adding Kriging(SHAKING)method to calculate ionospheric parameter information for BDSBAS.Performance analysis of existing Satellite-Based Augmentation System(SBAS)ionospheric models reveals that some SBAS systems broadcast delay correction information marked as unmonitored points.Demand analysis of regional SBAS grid points in China shows that when the satellite elevation angle is set as 15°,SHAKING provides 189 usable points and 3 unusable points.Combined with clock and orbit correction information provided by BDSBAS,SHAKING improves the availability range of approaches with vertical guidance by approximately 30%compared to the inverse distance weighting(IDW)method.关键词
北斗星基增强系统(BDSBAS)/电离层/附加Kriging估计的调整球谐函数方法(SHAKING)/反距离加权插值(IDW)/格网点电离层垂直延迟/格网点电离层垂直误差Key words
BeiDou satellite-based augmentation systems(BDSBAS)/ionosphere/adjusted spherical harmonics adding Kriging(SHAKING)/inverse distance weighting/grid ionospheric vertical delay(GIVD)/grid ionospheric vertical error(GIVE)分类
天文与地球科学引用本文复制引用
刘昂,李子申,王宁波,张周宇,汪亮,邵搏..基于SHAKING方法的北斗星基增强系统电离层模型可用性分析[J].全球定位系统,2024,49(5):10-18,119,10.基金项目
国家自然科学基金(42122026,42074043,42174038,42404013) （42122026,42074043,42174038,42404013）
北京市科技新星计划(20230484329) （20230484329）
