Year: 2025
Type: article
Abstract: Radio occultation observation has garnered significant attention owing to its low‐cost, all‐weather, and global coverage feature. However, traditional occultation inversion methods lead to error accumulation due to assumptions that are not entirely suitable in the real ionospheric environment, resulting in poor performance in the low ionosphere (D, E layers). In this article, we propose a new method for inverting the electron density in low ionosphere using high‐precision 50 Hz occultation data. This method can eliminate the fixed constant term of 50 Hz data and obtain a sharper weighting function through epoch differencing. The inversion results have a good consistency with the results of the ionosonde, with a correlation coefficient of 0.92 and a determination coefficient of 0.85. In addition, the new method can retrieve local details of electron density profiles and capture sporadic E layer (Es), providing support for the study of Es layer morphology and structure.
Source: Radio Science
DOI: 10.1029/2024rs008152
Authors: Jialiang Zhong, Sijia Han, Caiyun Wang, Wei Guo
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4407607755