Electron Density Profiles from FORMOSAT-3/COSMIC
(ED-RO-COSMIC)Last modified on Oct 9th, 2023
Status:
In This Page
Responsible Parties
Abstract
GPS radio occultations allow the sounding of the Earth’s atmosphere (i.e. troposphere and ionosphere). The basic observable of this technique is the additional delay, due tothe refractivity index, of a radiosignal when passing through the atmosphere. This additional delay is proportional to the integrated refractivity, in such a way that we can obtain an estimation of the vertical refractivity profiles using observations at different elevation angles by solving an inverse problem. Traditionally, the solution of this inverse problem is obtained by using the Abel inversion algorithm assuming a refractivity index that only depends on the altitude. In this paper we present a modified Abel inversion algorithm for ionospheric sounding that overcomes the spherical symmetry assumption of the traditional Abel inversion algorithm. Processing a set of simulated data and 1 day of real data with this algorithm, a clear improvement over the traditional one can be obtained when comparing the derived critical frequencies with the ionosonde measurements. It is also shown that this improvement is sufficient to measure critical frequencies associated with the ionospheric E layer.
Website
http://iswi-secretariat.org/Documentation
-
Hernandez-Pajares, M., M. Garcia-Fernandez, A. Rius, R. Notarpietro, A. von Engeln, G. Olivares-Pulido, À. Aragon-Angel, and A. Garcia-Rigo (2017), Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions, J. Geophys. Res. Space Physics, 122, doi:10.1002/2017JA023876.
Published 07/20/2017
DOI
doi:10.1002/2017JA023876
Further Resources and Information
Resources
Go to Metadata FileKeywords
- Electron Density Profile
- Ionospheric observations
- Ionosphere
- Radio occultation
- Ionospheric Specification
- COSMIC
- HF radio wave propagation
- FORMOSAT-3
Metadata Information
| Editor | Polytechnic University of Catalonia |
| Version | 1 |
| Created | Monday 9th Oct. 2023, 11:00 |
| Last Modified | Monday 9th Oct. 2023, 11:00 |