title: Satellite vibration measurements with an autodyne CO(2) laser radar.
abstract: Vibration signatures of the Low Power Atmospheric Compensation Experiment satellite were obtained with a ground-based CO(2) laser radar. The laser radar operated in a cw mode and used autodyne receivers to extract relative target velocity information between a germanium retroreflector located at the base of the satellite and a retroreflector array located at the tip of an extended forward boom. Time-frequency analysis algorithms were applied to the vibration data to investigate the correlation between excitations and modal structure. The resultant analysis suggests that vibration modes of an on-orbit spacecraft can be suppressed with simple open-loop techniques.
authors.forename: K I
authors.initials: KI
authors.lastname: Schultz
authors.forename: D G
authors.initials: DG
authors.lastname: Kocher
authors.forename: J A
authors.initials: JA
authors.lastname: Daley
authors.forename: J R
authors.initials: JR
authors.lastname: Theriault
authors.forename: J
authors.initials: J
authors.lastname: Spinks
authors.forename: S
authors.initials: S
authors.lastname: Fisher