Latest Data
Introduction
An accurate model of the regional ionosphere based on the double thin layer hypothesis is developed. In this method, the traditional hypothesis of ionospheric thin layer is abandoned, and the model parameters are more reasonably distributed on the ionospheric thin sphere with different heights, and the distribution of ionospheric electron density in the vertical direction is properly considered. Meanwhile, by building a mathematical model with Kriging attached, SHAKING and adaptive covariance function describing spatial ionospheric correlation, accurate modeling and broadcasting of regional ionospheric TEC and its corresponding precision identifier (QI) is achieved.
Product Standar
| Specification | Description |
|---|---|
| Provider | Chinese Academy of Sciences(CAS) |
| Data Input | Regional real-time GNSS reference station data |
| Data Processing | Double Thin Layer Assumption +SHAKING method |
| System Frequency | BDS B1/B3, GPS L1/L2, GAL E1/E5 |
| Coverage Area | 5°N – 60°N, 70°E – 140°E |
| Thin Layer Height | 280Km、1250Km |
| Spatial Resolution | 1.0° Lat × 1.0° Lon |
| Data Interval | 1 minute |
| Precision Marking | Provide QI |
| Data Format | IONEX |
| Data Download | ftp://ftp.gipp.org.cn/product/ionex/ |
| Reference | Li et al. 2019; Li et al. 2022 |