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Global Positioning System Synchronized Active Light Autonomous Docking SystemA Global Positioning System Synchronized Active Light Autonomous Docking System (GPSSALADS) for automatically docking a chase vehicle with a target vehicle comprises at least one active light emitting target which is operatively attached to the target vehicle. The target includes a three-dimensional array of concomitantly flashing lights which flash at a controlled common frequency. The GPSSALADS further comprises a visual tracking sensor operatively attached to the chase vehicle for detecting and tracking the target vehicle. Its performance is synchronized with the flash frequency of the lights by a synchronization means which is comprised of first and second internal clocks operatively connected to the active light target and visual tracking sensor, respectively, for providing timing control signals thereto, respectively. The synchronization means further includes first and second Global Positioning System receivers operatively connected to the first and second internal clocks, respectively, for repeatedly providing simultaneous synchronization pulses to the internal clocks, respectively. In addition, the GPSSALADS includes a docking process controller means which is operatively attached to the chase vehicle and is responsive to the visual tracking sensor for producing commands for the guidance and propulsion system of the chase vehicle.
Document ID
19940032318
Acquisition Source
Headquarters
Document Type
Other - Patent Application
Authors
Howard, Richard
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1994
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NAS 1.71:MFS-28853-1
Report Number: NAS 1.71:MFS-28853-1
Patent Number: NASA-CASE-MFS-28853-1
Patent Application Number: US-PATENT-APPL-SN-283728
Accession Number
94N36825
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-MFS-28853-1
Patent Application
US-PATENT-APPL-SN-283728
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