Quality aspects of Fengyun3 D∕E radio occultation bending angle products
Abstract
This study systematically evaluated the quality of ionosphere-corrected bending angles from Fengyun3 (FY3) D/E satellites (equipped with GPS and BDS receivers) using ERA5 data as references and MetOp products as comparisons. The quality of subsequent retrieved optimized bending angles, refractivity, and temperature were also analysed. Ionosphere-corrected bending angle were assessed via two approaches: outlier detection across 10–80 km and bias/noise quantification. Overall quality evaluation showed that FY3 ionosphere-corrected bending angles were consistent with MetOp below 40 km. Above 40 km, FY3 bending angles exhibited larger errors than MetOp. In outlier detection, MetOp had less than 5 % bad profiles, followed by FY3D (
Fields of Study & Subjects
Ionosphere and magnetosphere dynamics
GNSS positioning and interference
Earthquake Detection and Analysis
Publication details
- Journal / source
- Atmospheric measurement techniques
- Publisher
- Copernicus GmbH
- Volume
- 19
- Issue
- 2
- Pages
- 659–678
- Publication date
- 28 January 2026
- Language
- EN