Earth & Space Science
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Motion Synchronization of Multiple Piezoelectric Actuators (PEAS) Using the Linear Active Disturbance Rejection Controller (LADRC)
(2019-07-02)This thesis investigates how the Linear Active Disturbance Rejection Controller (LADRC) can be used with the synchronous strategy for motion synchronization of multiple piezoelectric actuators (PEAs). Both a single PEA ... -
Optimal Image-Aided Inertial Navigation
(2019-07-02)The utilization of cameras in integrated navigation systems is among the most recent scientific research and high-tech industry development. The research is motivated by the requirement of calibrating off-the-shelf cameras ... -
Use of Geospatial Methods to Characterize Dispersion of the Emerald Ash Borer in Southern Ontario, Canada
(2019-07-02)Since the introduction of the Asian Emerald Ash Borer beetle (EAB, Agrilus planipennis) to Southern Ontario in 2002, the condition of all species of Ash trees (Fraxinus) in the province is currently at risk. In this research, ... -
Towards Multi-Channel Inversion of Electromagnetic Sea Ice Surveys
(2019-03-05)Sea ice is a crucial parameter in climate research as it plays an important role in the interaction between oceans and the atmosphere in polar regions. It is considered a climate indicator and it is critical to observe its ... -
Radiative Transfer in the Martian Environment: In-Situ Results from the MSL Curiosity Rover and Laboratory Experimentation on Martian Regolith and Crystalline Rock Analogs
(2019-03-05)Global circulation models predicted a suppressed planetary boundary layer within Gale Crater prior to the landing of the Mars Science Laboratory. Images from Mars allow the amount of suspended dust near the crater floor ... -
Mixing and Deposition in a Jack Pine Forest Canopy
(2019-03-05)To study how aerosols mix and deposit to forests, a tower was erected in a jack pine forest as part of the York Athabasca Jack Pine project. The tower is surrounded by anthropogenic pollution sources from the Alberta Oil ... -
Proportional-Derivative-Acceleration Feedback Controller Design for Single Axis Attitude Control of Rigid Spacecraft with Flexible Appendages
(2019-03-05)This study designs and analyzes a new type of controller that helps improve the performance of single axis attitude control of flexible appendages attached to a rigid spacecraft. Conventionally, PID with position feedback ... -
Dynamics and Control of Spacecraft Rendezvous By Nonlinear Model Predictive Control
(2019-03-05)This doctoral research investigates the fundamental problems in the dynamics and control of spacecraft rendezvous with a non-cooperative tumbling target. New control schemes based on nonlinear model predictive control ... -
Method for Using a Laser and Camera to Determine the Turbidity of a Liquid System
(2019-03-05)The surface of Titan hosts lakes of liquid methane. Evidence suggests the presence of suspended particles in these lakes. A method utilizing a laser and camera to find turbidity is explored. Extinction coefficients were ... -
An Imaging Fourier Transform Spectrometer (IFTS) for Climate Observations
(2019-03-05)Climate change is an ongoing global phenomenon having a greater impact at higher latitudes. The instrument development reported herein is aimed at demonstrating the feasibility of using an Imaging Fourier Transform ... -
Evaluating the 3D EnKF - VAR Hybrid Data Assimilation in GSI for Surface and Upper Level Analyses
(2019-03-05)This study examines the 3 dimensional analysis produced using the Hybrid Ensemble Kalman Filter (EnKF) Variational (VAR) Data Assimilation in the Gridpoint Statistical Interpolation (GSI) System. The data assimilation ... -
The Impact of Saharan Dust on Atlantic Convective Systems: A Case Study
(2019-03-05)Tropical weather systems such as the African Easterly Waves (AEWs), the African Easterly Jet (AEJ), and tropical cyclones usually interact with the Saharan Air Layer (SAL) and mineral dust aerosols embedded in the SAL. ... -
Design and Construction of an Optical Polarimeter for the Study of Ice-like Analogs using Near Zero Phase Angle Measurements
(2019-03-05)Previous studies for analog samples measuring polarized backscatter near zero phase angles have suggested strong presence of multiple scattering effects. Radar data for Mercury, Moon and other Icy Galilean satellites exhibit ... -
Study of Micro-Laser-Induced Breakdown Spectroscopy (uLIBS) for Applications in Planetary Exploration
(2018-11-21)Laser-induced breakdown spectroscopy (LIBS) is a type of atomic emission spectroscopy which uses a laser to create a plasma on the surface of a target material. Light collected from the plasma will show characteristic ... -
Improving Reliability and Assessing Performance of Global Navigation Satellite System Precise Point Positioning Ambiguity Resolution
(2018-11-21)Conventional Precise Point Positioning (PPP) has always required a relatively long initialization period (few tens of minutes at least) for the carrier-phase ambiguities to converge to constant values and for the solution ... -
GNSS Precise Point Positioning Using Low-Cost GNSS Receivers
(2018-11-21)There are positioning techniques available such as Real-Time Kinematic (RTK) which allow user to obtain few cm-level positioning, but require infrastructure cost, i.e., setting up local or regional networks of base stations ... -
Least-Squares Wavelet Analysis and Its Applications in Geodesy and Geophysics
(2018-11-21)The Least-Squares Spectral Analysis (LSSA) is a robust method of analyzing unequally spaced and non-stationary data/time series. Although this method takes into account the correlation among the sinusoidal basis functions ... -
Investigating the Potential Impact of Wind Farms on Lake Erie
(2018-11-21)Our traditional energy sources are mainly non-renewable resources like coal and oil. These fuels, when burned, have a negative impact on our environment due to release of greenhouse gases, and they are not replenishable. ... -
Multi-Scale Hierarchical Conditional Random Field for Railway Electrification Scene Classification Using Mobile Laser Scanning Data
(2018-11-21)With the recent rapid development of high-speed railway in many countries, precise inspection for railway electrification systems has become more significant to ensure safe railway operation. However, this time-consuming ... -
Design and Prototype of a Phased-Array Antenna for Nanosatellite Radar and Communication Applications
(2018-11-21)Reconfigurable software defined radios are capable of altering radio frequency parameters of a transceiver to add functionality and improve performance. Initially static by design, reconfigurable radios have become common ...
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