NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
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 comprising 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
19960034310
Acquisition Source
Marshall Space Flight Center
Document Type
Other - Patent
Authors
Howard, Richard T.
(NASA Marshall Space Flight Center Huntsville,AL United States)
Book, Michael L.
(NASA Marshall Space Flight Center Huntsville,AL United States)
Bryan, Thomas C.
(NASA Marshall Space Flight Center Huntsville,AL United States)
Bell, Joseph L.
(NASA Marshall Space Flight Center Huntsville,AL United States)
Date Acquired
August 17, 2013
Publication Date
February 6, 1996
Subject Category
Aircraft Communications And Navigation
Report/Patent Number
US-Patent-Class-364-459
Int-Patent-Class-B64G-1/64
US-Patent-Class-364-424.02
Patent Number: NASA-Case-MFS-28853-1
Report Number: US-Patent-Class-364-459
Patent Application Number: US-Patent-Appl-SN-283728
Report Number: Int-Patent-Class-B64G-1/64
Report Number: US-Patent-Class-364-424.02
Patent Number: US-Patent-5,490,075
Accession Number
96N30179
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-MFS-28853-1|US-Patent-5,490,075
Patent Application
US-Patent-Appl-SN-283728
No Preview Available