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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 61 for “"attitude determination"”.
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Attitude Determination Using Imaging Lidar
<p>The purpose of this study is to determine the attitude of an out of control object using a new technology called lidar (Light Ranging and Detection). As the number of spacecraft continues to grow, it is paramount to introduce a new type of autonomous on-orbit satellite inspection and repair …
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Aircraft attitude determination using robust estimation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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Attitude Determination and Control of Nano-Satellites
… that implements three-axis, onboard attitude determination and control. Though this is an ambitious goal, it will allow for a wide range of scientific missions to be accomplished on this bus. To complete the system, an accurate attitude determination system needs to be developed. …
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A compressive sensing algorithm for attitude determination
… study of the application of our algorithm to attitude determination, or finding one's orientation in space. Spacecraft typically use cameras to acquire an image of the sky, and then identify stars in the image to compute their orientation. Taking pictures is very expensive for small …
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Orientation-based representations of shape and attitude determination
… a sensed object and that of a viewer define the attitude of the object. Orientation-based representations record 3-D surface properties as a function of position on the unit sphere. All orientation-based representations considered share a desirable property: the representation of a rotated object …
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Interferometric attitude determination using the global positioning system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1981.
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Vehicle model-based filtering for spacecraft attitude determination
… of vehicle model-based filtering for spacecraft attitude determination. Whereas traditional navigation filters typically rely only on the kinematic relations between body rate and attitude in their filter designs, the state estimator presented here expands the plant model to include rigid body …
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An attitude determination and control system for small satellites
A flexible, robust attitude determination and control (ADC) system is presented for small satellite platforms. Using commercial-off-the-shelf sensors, reaction wheels, and magnetorquers which fit within the 3U CubeSat form factor, the system delivers arc-minute pointing precision. The ADC system …
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Tightly coupled GPS-gyro integration for spacecraft attitude determination
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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Development of Magnetometer-Based Orbit and Attitude Determination for Nanosatellites
Attitude and orbit determination are critical parts of nanosatellite mission operations. The ability to perform attitude and orbit determination autonomously could lead to a wider array of mission possibilities for nanosatellites. This research examines the feasibility of using low-cost …
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Single-Vector Aiding of an IMU for CubeSat Attitude Determination
This thesis examines CubeSat attitude determination using the Earth’s magnetic field (EMF) vector aiding a low-cost IMU. CubeSats provide relatively cost-effective methods of performing scientific research in orbital environments. However, to adequately perform this research, knowledge of the …
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Autonomous Artificial Neural Network Star Tracker for Spacecraft Attitude Determination
… after launch as well as recovery from a loss of attitude knowledge during the mission would occur significantly faster with this prototype system when compared to current commercially available autonomous star trackers."
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Performance analysis of an integrated GPS/inertial attitude determination system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Design, Implementation and Validation of an Attitude Determination Subsystem for Nanosatellites
… is to design and analyze the accuracy of an attitude determination subsystem for a satellite of the CubeSat class by using low cost sensors. CubeSats are nanosatellites that complies a certain amount of layout criterions described by the California Polytechnic State University. A 3-axis …
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Methods for enhancing carrier phase GNSS positioning and attitude determination performance.
… both a high precision relative positioning and attitude determination system. This is because of the drift-free nature of the GNSS measurement errors and the precise nature of the carrier phase measurement. The key to making full use of the precise nature of the carrier phase measurement is to …
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Improved qualification and algorithms for illinisat-2 attitude determination and control
… available off the shelf (COTS) parts. The Attitude Determination and Control System (ADCS) of the bus is purely magnetic, relying on magnetometers for determination and magnetorquers for actuation. The pure magnetic ADCS is favorable because of its low power, volume and mass contributions …
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On-Board Orbit Determination and 3-Axis Attitude Determination for Picosatellite Applications
This thesis outlines an orbit determination and 3-axis attitude determination system for use on orbit as applicable to 1U CubeSats and other picosatellites. The constraints imposed by the CubeSat form factor led to the need for a simple configuration and relaxed accuracy requirements. To design a …
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A novel magnetic field approach to simulate spacecraft attitude determination and control
… which will be capable of achieving 3-axis attitude control via magnetic torque coils and attitude determination via Kalman-filtered magnetometer data with an optional Sun vector measurement. This innovative new attitude determination and control (ADC) method is more sophisticated than those …
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Interpolation of Experimental Error Statistics for Mission Design of GPS Partial Attitude Determination
… method for designing a GNSS pitch and heading determination system. A simulated environment, validated experimentally with 2 GNSS antennas, is used in conjunction with a fixed satellite geometry in order to generate pseudorange and carrier phase measurements from satellites to receiver …
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Development and analysis of a small satellite attitude determination and control system testbed
Attitude Determination and Control Systems (ADCS) are critical to the operation of satellites that require attitude knowledge and/or attitude control to achieve mission success. Furthermore, ADCS systems only operate as designed in the reduced friction, micro-gravity environment of space. …
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