大地测量与地球动力学2012，Vol.32Issue(4)：51-56,6.
基于非改正TEC的电离层掩星反演方法
AN IONOSPHERIC OCCULTATION INVERSION TECHNIQUE BASED ON NON-CALIBRATED TEC
摘要
Abstract
In order to eliminate the effect from the topside ionosphere above LEO, it is necessary to retrieve e-lectron density profiles based on the calibrated TEC below LEO, which introduces the approximation that the LEO and GPS orbit are close to being coplanar. In this paper, firstly an improved technique is proposed to eliminate this approximate error based on the non-calibrated TEC, and then the technique is applied in the inversion of simulated data and real observation data respectively. The results show that: 1) whether the simulated data or real observation data are used, the inversion results derived from the non-calibrated TEC are belter than those derived from the calibrated TEC technique, especially it is more obvious for low LEO altitudes;2) based on the above data, some serious errors occur while the electron density profiles are retrieved from the calibrated TEC, on the contrary, the inversion results derived from non-calibrated TEC are reasonable.关键词
GPS无线电掩星/改正TEC反演/非改正TEC反演/电离层/测高仪Key words
GPS radio occultation/calibrated TEC inversion/non-calibrated TEC inversion/ionosphere/ionosonde分类
天文与地球科学引用本文复制引用
林剑,吴云..基于非改正TEC的电离层掩星反演方法[J].大地测量与地球动力学,2012,32(4):51-56,6.基金项目
2011年地震行业科研专项(201108004) （201108004）
