| Texto completo | |
| Autor(es): |
Marini-Pereira, Leonardo
;
Moraes, Alison de Oliveira
;
Pullen, Sam
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION; v. 71, n. 1, p. 25-pg., 2024-01-01. |
| Resumo | |
This paper proposes a strategy for improving ionospheric detection of threatening conditions, motivated by issues with ground-based augmentation systems (GBASs) at low latitudes. A methodology is developed for a real-time alerting system that monitors the ionosphere state using surrounding ground stations and sends alerts to differential global navigation satellite systems services when threatening conditions are detected. The method is based on time-step gradients and data gap analysis to detect ionospheric disturbances and to declare periods for affected satellite signals to be unavailable. Validation was performed with real data using the largest observed gradients from the Brazilian ionospheric threat model. The results demonstrate that the method is effective, detecting the vast majority of previously known threatening gradients. An availability assessment was also performed to assess for a loss of availability resulting from the implementation of this technique. Applications of the developed technique include the improvement of low-latitude nighttime GBAS availability. (AU) | |
| Processo FAPESP: | 17/50115-0 - INCT 2014: tecnologia GNSS no suporte à navegação aérea |
| Beneficiário: | Joao Francisco Galera Monico |
| Modalidade de apoio: | Auxílio à Pesquisa - Pesquisa em Políticas Públicas |