Dr. Michael J. Ruth Profile

Dr. Michael J. Ruth

Senior Scientist at Northrop Grumman Corp

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Proceedings Article | 30 August 2004 Paper

Video-guidance design for the DART rendezvous mission

Michael Ruth, Chisholm Tracy

Proceedings Volume 5419, (2004) https://doi.org/10.1117/12.562182

KEYWORDS: Global Positioning System, Sensors, Video, Polonium, Reflectors, Satellites, Control systems, Space operations, Data backup

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NASA’s Demonstration of Autonomous Rendezvous Technology (DART) mission will validate a number of different guidance technologies, including state-differenced GPS transfers and close-approach video guidance. The video guidance for DART will employ NASA/Marshall’s Advanced Video Guidance Sensor (AVGS). This paper focuses on the terminal phase of the DART mission that includes close-approach maneuvers under AVGS guidance. The closed-loop video guidance design for DART is driven by a number of competing requirements, including a need for maximizing tracking bandwidths while coping with measurement noise and the need to minimize RCS firings. A range of different strategies for attitude control and docking guidance have been considered for the DART mission, and design decisions are driven by a goal of minimizing both the design complexity and the effects of video guidance lags. The DART design employs an indirect docking approach, in which the guidance position targets are defined using relative attitude information. Flight simulation results have proven the effectiveness of the video guidance design.

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