Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 44 for “"proximity operations"”.
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Estimation of noise variances for shuttle proximity operations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1996.
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Computer vision based navigation for spacecraft proximity operations
… vision for spacecraft relative navigation and proximity operations within an unknown environment is an enabling technology for a number of future commercial and scientific space missions. This thesis presents three first steps towards a larger research initiative to develop and mature these …
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Cooperative control of two active spacecraft during proximity operations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Six dimensional trajectory solver for automomous [sic] proximity operations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Planning and scheduling proximity operations for autonomous orbital rendezvous
… integer programming formulation to solve the proximity operations scheduling problem for autonomous orbital rendezvous. The algorithm of this thesis allows the operator to specify planned modes, which encode the chase satellite's operations. The scheduler optimally places these modes in the …
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Proximity operations of an underwater vehicle to a host vessel
Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1996, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Angles-only navigation technique for maneuver-free spacecraft proximity operations
… wide range of missions involving rendezvous and proximity operations, most notably with non-cooperative resident space objects (RSOs). A novel procedure is developed that constrains the admissible region of the target's natural motion to a set of unit-less parameters. These parameters and an …
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Proximity operations of a miniature inspector satellite using emulated computer vision
… and flight-test an inspector-satellite operations design and controller. The design utilizes an autonomous control algorithm that combines Linear Quadratic Regulator (LQR) and Artificial Potential Field (APF) control. This controller is designed to navigate through waypoints, follow the …
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Robust Control and Learning for Autonomous Spacecraft Proximity Operations with Uncertainty
… be highly autonomous and able to perform complex proximity operations maneuvers in a safe manner. This requires that the guidance and control system must reliably address inevitable sources of uncertainty while performing the maneuvers. This thesis seeks to improve the flexibility and performance …
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Analytical and semi-analytical maneuvering strategies for close proximity operations in space
L'abstract è presente nell'allegato / the abstract is in the attachment
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Design and Validation of Hardware-in-the-Loop Testbed for Proximity Operations Payloads
<p>The research presented here is a new testbed design for CubeSat and payload testing and development. This research demonstrates a low-cost, hardware-in-the-loop testing apparatus for use with university CubeSat programs for testing throughout the different levels of the development process. The …
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Fuzzy logic application for modeling man-in-the-loop space shuttle proximity operations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Developments for the Characterization of Spacecraft Proximity Operations for Improved Space Situational Awareness
… A variety of satellites are able to perform operations in close proximity to each other in order to complete a number of different missions. Maintaining awareness of these operations helps to ensure the continued safe operations in space. This work introduces a method for identifying and …
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Attitude Determination & Control System Design and Implementation for a 6U CubeSat Proximity Operations Mission
… of the Application for Resident Space Object Proximity Analysis and IMAging (ARAPAIMA) proximity operations mission. The satellite is equipped with a cold gas propulsion system capable of exerting 2.5 mN m torques in both directions about each body axis. The attitude sensors include an angular …
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Incorporation of GNSS multipath to improve autonomous rendezvous, docking and proximity operations in space
<p>Automated rendezvous and docking (AR&D;) operations are important for many future space missions, such as the resupply of space stations, repair and refueling of large satellites, and active removal of orbital debris. These operations depend critically on accurate, real-time knowledge of the …
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Feasibility of Circular Orbits for Proximity Operations in Strongly Perturbed Environments around Uniformly Rotating Asteroids
<p>Asteroids have been mapped and observed since 1801 when an Italian astronomer Guiseppe Piazzi discovered Ceres (Serio, Manara, & Sicoli, 2002). Since then, asteroids have been growing in popularity throughout the scientific community because they are thought to hold the information we need to …
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Six degree of freedom trajectory planner for spacecraft proximity operations using an A* node search
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
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Long-duration proximity operations flexibly optimized for efficient inspection and servicing using free-orbit dynamics
… the prolonged medium- to close-range spacecraft proximity operations problem from the perspective of continuous optimal trajectory control. A numerical optimization framework is presented for developing and analyzing fuel-, energy-, and time-optimal trajectories with multiple phases using Gauss …
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Guidance and Navigation Algorithms for Spacecraft Low-Thrust Proximity Operations: Formation Flight in Circular Relative Orbit
L'abstract è presente nell'allegato / the abstract is in the attachment
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