| Full text | |
| Author(s): |
Jonas Sousasantos
[1]
;
Leonardo Marini-Pereira
[2]
;
Alison de Oliveira Moraes
[3]
;
Sam Pullen
[4]
Total Authors: 4
|
| Affiliation: | [1] Instituto Tecnológico de Aeronáutica. Departamento de Ciência e Tecnologia Aeroespacial. Divisão de Ciência da Computação - Brasil
[2] Instituto de Controle do Espaço Aéreo. Departamento de Controle do Espaço Aéreo. Divisão de Pesquisa - Brasil
[3] Instituto de Aeronáutica e Espaço. Departamento de Ciência e Tecnologia Aeroespacial. Divisão de Eletrônica - Brasil
[4] Stanford University. Department of Aeronautics and Astronautics
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | J. Aerosp. Technol. Manag.; v. 13, 2021-12-08. |
| Abstract | |
ABSTRACT Ionospheric dynamics over low latitudes, especially in Brazil, are highly active, with several phenomena resulting from the complex interaction between space weather and atmospheric elements. These phenomena may cause disruptions to aviation communications, navigation and surveillance systems. Motivated by the issues posed by the ionosphere to the operation of ground-based augmentation of global navigation satellite systems (GNSS) in Brazil, this review paper presents fundamental physical aspects of space weather and low-latitude ionospheric dynamics to show how and why the ionosphere over Brazil is much more challenging for satellite-based positioning technologies. Solar influence, geomagnetic field configurations under quiet and storm periods, and the ensuing ionospheric dynamics over low latitudes occasionally lead to the development of structures known as equatorial plasma bubbles. These structures can produce strong plasma gradients within the ionosphere and cause scintillation on transionospheric signals. The consequences of these structures for GNSS users are specifically addressed. (AU) | |
| FAPESP's process: | 16/24970-7 - The Scintillation Prediction Observation Research Task (SPORT) |
| Grantee: | Mangalathayil Ali Abdu |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 18/06158-9 - Statistical Studies of the Variation of Ionospheric Parameters and Their Relationship with Space Weather Events |
| Grantee: | Jonas de Sousa dos Santos |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |