对流层和电离层是地球近地空间环境中两个重要的组成部分, 是靠近地球表面且与人类生活联系
最密切的大气圈层. 全球导航卫星系统技术的快速发展, 为GNSS 空间环境学的研究提供了良好 …

Ionized by solar radiation, the ionosphere causes a phase rotation or time delay to trans-
ionospheric radio waves. Reconstruction of ionospheric electron density profiles with global …

The total electron content (TEC) is one of the most important parameters for studying the
behavior of the ionosphere. The global ionosphere maps (GIMs) can be used to study the …

The computerized ionospheric tomography usually involves solving an ill-posed inversion
problem. The sparsity of Global Positioning System (GPS) stations and the limitation of …

The ill-posed models are widely encountered in various inversions of geodesy and remote
sensing. The regularization approaches can significantly stabilize the solution to ill-posed …

A new tomographic method was developed with the main goal of mapping the ionosphere in
the region of Brazil. The ionospheric background was estimated based on ionosonde and …

We propose using the generalized regression neural network (GRNN) method for spatio-
temporal modeling of ionosphere total electron content (TEC). The GRNN model uses radial …

GNSS ionospheric tomography technique is capable to reconstruct the high-quality 3D
ionospheric electron density (IED) images with a relatively low cost. We present a new …

Computerized ionospheric tomography is an important technique for ionosphere
investigation. However, it is an ill-posed problem owing to an insufficient amount of available …

Global Navigation Satellite System (GNSS) observation insufficiency limits the development
of the voxel-based computerized ionospheric tomography (CIT) technique. Electron …