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- W817923865 abstract "The original G-Guidance algorithm provided an autonomous guidance and control policy for small-body proximity operations that took into account uncertainty and dynamics disturbances. However, there was a lack of robustness in regards to object proximity while in autonomous mode. The modified GGuidance algorithm was augmented with a second operational mode that allows switching into a safety hover mode. This will cause a spacecraft to hover in place until a mission-planning algorithm can compute a safe new trajectory. No state or control constraints are violated. When a new, feasible state trajectory is calculated, the spacecraft will return to standard mode and maneuver toward the target. The main goal of this augmentation is to protect the spacecraft in the event that a landing surface or obstacle is closer or further than anticipated. The algorithm can be used for the mitigation of any unexpected trajectory or state changes that occur during standard mode operations" @default.
- W817923865 created "2016-06-24" @default.
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- W817923865 date "2011-01-01" @default.
- W817923865 modified "2023-09-27" @default.
- W817923865 title "An Augmentation of G-Guidance Algorithms" @default.
- W817923865 hasPublicationYear "2011" @default.
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