Artículos relacionados a Periodic Methods for Controlling a Satellite in Formation

Periodic Methods for Controlling a Satellite in Formation - Tapa blanda

Carraher, Erin Y.

 
9781249599777: Periodic Methods for Controlling a Satellite in Formation
Tapa blanda
ISBN 10: 1249599776 ISBN 13: 9781249599777
Editorial: BiblioScholar, 2012

Sinopsis

Precise position determination and control is necessary to accomplish proposed satellite formation flying missions of ground movement target indication and synthetic aperture radar. This thesis combines the estimation and control techniques of past AFIT theses with various time-varying and time-invariant LQG control methods. Linear time-invariant control is ideal for on-board satellite estimation and control applications, freeing-up the satellite's limited computational capacity. Using a dynamics frame transformation from the nodal frame to an orbital frame, a higher fidelity, time-periodic model produced nearly identical results for either time-varying or time-invariant control for many scenarios. Scenarios included initial perturbations in the radial, in-track, and cross-track directions as well as increased magnitude perturbations; step size increase from 0.2 seconds to 2 seconds; and increased and reduced measurement noise level scenarios versus the standard absolute GPS receiver noise level. Results obtained indicate the ability to control within the error range of the measurements (centimeter-level and better) using realistic noise and dynamics perturbations.

"Sinopsis" puede pertenecer a otra edición de este libro.

Reseña del editor

Precise position determination and control is necessary to accomplish proposed satellite formation flying missions of ground movement target indication and synthetic aperture radar. This thesis combines the estimation and control techniques of past AFIT theses with various time-varying and time-invariant LQG control methods. Linear time-invariant control is ideal for on-board satellite estimation and control applications, freeing-up the satellite's limited computational capacity. Using a dynamics frame transformation from the nodal frame to an orbital frame, a higher fidelity, time-periodic model produced nearly identical results for either time-varying or time-invariant control for many scenarios. Scenarios included initial perturbations in the radial, in-track, and cross-track directions as well as increased magnitude perturbations; step size increase from 0.2 seconds to 2 seconds; and increased and reduced measurement noise level scenarios versus the standard absolute GPS receiver noise level. Results obtained indicate the ability to control within the error range of the measurements (centimeter-level and better) using realistic noise and dynamics perturbations.

"Sobre este título" puede pertenecer a otra edición de este libro.

Editorial
BiblioScholar
Año de publicación
2012
Idioma
Inglés
ISBN 10 
1249599776
ISBN 13 
9781249599777
Encuadernación
Tapa blanda
Número de páginas
136
Contacto del fabricante
no disponible
Persona responsable
no disponible