Theses and Dissertations
Now showing items 1-10 of 12
Improved UUV positioning using acoustic communications and a potential for real-time networking and collaboration
(Monterey, California: Naval Postgraduate School, 2017-06)
Due to the lack of underwater navigation aids, a system capable of helping a submersible vehicle maintain position accuracy, permitting it to stay underwater for longer periods, is extremely desirable. The accuracy and ...
Pose and wind estimation for autonomous parafoils
(Monterey, California: Naval Postgraduate School, 2014-09)
This dissertation presents two contributions to the development of autonomous aerial delivery systems (ADSs), both of which advance the prospect of enabling an ADS to land on a moving platform, such as the deck of a ship ...
Wavefront reconstruction and mirror surface optimization for adaptive optics
(Monterey, California: Naval Postgraduate School, 2014-06)
The problem of wavefront reconstruction is important in high precision optical systems, such as astronomical telescopes, where it is used to estimate the distortion of the collected light caused by the atmosphere and ...
Robust adaptive control using a filtering action
(Monterey, California: Naval Postgraduate School, 2009-09)
This dissertation describes the design of an adaptive controller for single-input single-output (SISO) systems with guaranteed bounds on the transient response, and robustness with external disturbances and unmodeled ...
A computationally efficient algorithm for disturbance cancellation to meet the requirements for optical payloads in satellites
Vibration control is a very important issue in satellites. The new high- resolution digital imaging devices are especially sensitive to vibrations. Antennas used in laser communications also require a very quiet environment ...
Active narrowband disturbance rejection on an ultra quiet platform
(Monterey, California: Naval Postgraduate School, 1999-09)
Vibration isolation on spacecraft is needed for imaging sensors, microgravity experiments, and other sensitive payloads. The preferred method thus far has been passive isolation because of its simplicity and low cost. ...
Seaway learning and motion compensation in shallow waters for small auvs
(Monterey, California. Naval Postgraduate School, 1999-06)
The continual development of computer technology has enabled the expansion of intelligent control into the field of underwater robots, where potential uses include oceanographic research, environmental monitoring and ...
Soft decision diversity coded DS/DPSK systems in pulse-jammed multipath-fading channels
(Monterey, California: Naval Postgraduate School, 1999-03)
The performance of a Direct Sequence Spread Spectrum system utilizing Differential Phase Shift-Keying modulation over a fading channel in the presence of pulse noise interference and additive white Gaussian noise is ...
Analysis of non-Gaussian processes using the Wiener model of discrete nonlinear systems
(Monterey, California. Naval Postgraduate School, 1994-12)
Fundamental results developed by Wiener in the 1950's are combined with new work in the area of higher-order statistics to develop and explore a general model for nonlinear stochastic processes. The Wiener model is developed ...
Parametric uncertainty reduction in robust multivariable control
(Monterey, California. Naval Postgraduate School, 1993-09)
This dissertation presents a method for reducing the number of parametric uncertainties used in the design of a robust H-infinity controller. The resulting controller is shown to meet robust stability and performance ...
Cristi, Roberto (12)
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