Detalhes bibliográficos
| Ano de defesa: |
2019 |
| Autor(a) principal: |
Rian Koja |
| Orientador(a): |
Waldemar de Castro Leite Filho |
| Banca de defesa: |
Ronan Arraes Jardim Chagas,
Jacques Waldmann |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
eng |
| Instituição de defesa: |
Instituto Nacional de Pesquisas Espaciais (INPE)
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação do INPE em Mecânica Espacial e Controle
|
| Departamento: |
Não Informado pela instituição
|
| País: |
BR
|
| Link de acesso: |
http://urlib.net/sid.inpe.br/mtc-m21c/2019/02.06.02.41
|
Resumo: |
This work reviews and adapts the framework for in-flight attitude initialization of an Inertial Navigation System with Position-Velocity Integration formulas (PIF and VIF), which are based on measurements from a GPS receiver and inertial sensors. It is shown that some shortcomings of such methods are more critical for a simplified comparison algorithm (TRIAD), which in turn helps to create a derived method (FIL), based on some logical conditions checks which allow precluding large alignment errors. The algorithms are then analyzed by developing an original on-line error estimation method, based on an estimation of the covariance of the involved vectors yielding a direction error for the vectors, which allows a decision criterion for online convergence declaration employed for two additional methods (OPT and OPTc). Results are validated with simulated data and Monte-Carlo tests are employed to assess the performance and validate some assumptions associated with those methods. |
