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.
Results
Showing 1 to 6 of 6 for “"attitude estimates"”.
-
Estimation of Spacecraft Attitude Motion and Vibrational Modes Using Simultaneous Dual-Latitude Ground-Based Data
… form of speeding up convergence of spacecraft attitude estimates, and of a non-model-based approach to the detection of vibrational modes. Because attitude observability from photometric data is angle-based, dual-site simultaneous photometric observations of a resident space object are …
-
Vision-Assisted Control of a Hovering Air Vehicle in an Indoor Setting
… control method is applied for attitude stabilization and position control. A unique means of using an optic flow sensor for velocity and position estimation in an indoor setting is presented with flight results. Reliable hover flight and hallway following capabilities are …
-
A robust INS/PnP fusion method for GNSS-denied navigation of small UAVs
… and (2) Large errors in the position and attitude solution about which the tight integration measurement equations are linearized. This latter condition can occur when VISNAV updates are infrequent or spaced far apart in time. Maintaining stability of the filter that fuses camera and INS …
-
Lunar Surface Navigation Using Gravity and Star Tracker Measurements
… and starlight vectors to provide position and attitude estimates, given a predefined high-fidelity lunar gravity field. The gravity field uses provided values for the surface gravity magnitude and the East-West (EW) and North-South (NS) deflections of the gravity vector across the lunar …
-
Hydrodynamic added mass determination and attitude estimation of the Seahog - a remotely-operated underwater vehicle
… of linear and angular position sensing. The attitude of an underwater vehicle is its angular position relative to an inertial frame. Using the standard format for underwater vehicles, these angles are typically known as roll (about an axis along the surge direction of the vehicle), pitch …
-
Stratigraphy, Structure, and Fluid Flow at the Soda Lake Geothermal Field, western Nevada, USA
… new stratigraphic framework model, 2) bedding attitude estimates from seismic reflection surveys and borehole logs, and 3) a fault framework derived from both well data and geophysical surveys. The Soda Lake fault framework had been modeled from seismic reflection and borehole data in previous …