Earth & Space Science
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Recent Submissions
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Space Tether Deployment Control for Nanosatellites
(2021-03-24)This thesis investigates the deployment control of space tethers for nanosatellites. More specifically, the problem space is reduced to the deployment of a tether that is housed and autonomously operated on a nanosatellite, ... -
Mission Scheduling and Optimization Algortihm For Small Satellite Constellations
(2021-03-08)CubeSats, a class of small satellite, offer a unique opportunity for training, technology demonstrations, Earth observation, and other space-based research. There has been a recent increase in their design and implementation ... -
The Lunar Polar Regions: Illumination Environment, Seasonal Water Cycle and Exospheric Volatile Delivery
(2021-03-08)Permanently shadowed regions (PSRs) at the lunar poles are of unique interest for science and exploration due to their low surface temperatures and potential for volatile sequestration. Spacecraft have indicated the presence ... -
Further Probing the Mechanisms Driving Regional Projections of Extreme Precipitation Intensity
(2021-03-08)Regional projections of extreme precipitation intensity (EPI) are strongly influenced by regional projections of extreme ascent,. Earlier studies are suggesting that long-term changes in eddy length and vertical stability ... -
Mechanism of Interannual Cross-Equatorial Overturning Anomalies in the Pacific Ocean
(2021-03-08)Recent evidence shows that the variability of meridional overturning circulation (MOC) in the Indian and Pacific Oceans (PMOC) is characterized by a prominent deep cross-equatorial cell (CEC) spanning the tropics between ... -
Observations and Modelling of Thermospheric Dynamics at High Latitudes
(2021-03-08)A strong westward wind pattern in the lower middle thermosphere at high latitudes over both hemispheres, known as a wind wall, is investigated. Since scarce information is available about this region of the atmosphere, ... -
Ozone in a Jack Pine Forest in the Athabasca Oil Sands Region
(2021-03-08)Photochemical reaction is the primary source of ozone in the troposphere, with the ozone formation reaction depending on the concentration of precursors such as volatile organic compounds (VOCs) and nitrogen oxides (NOx). ... -
Improvement of Soil Property Mapping in Northern Ontario's Great Clay Belt Using Multi-Source Remotely Sensed Data
(2021-03-08)The prediction for the soil properties of texture, calcareous substrate reaction to acid, and ELC (Ecological Land Classification) moisture regime from environmental covariates derived from multi-source remotely sensed ... -
Theoretical and Experimental Investigation of Despin Control of Massive Space Debris by Tethered Space Tug
(2021-03-08)This doctoral research investigates the problem of despin control of the massive uncooperative rotating target by the tethered space tug in the post-capture phase. Theoretical and experimental studies are conducted to ... -
GNSS-PPP Navigation in Obstructed Environments Using a Chip-Scale Atomic Clock and Clock Coasting
(2020-11-13)The Precise Point Positioning (PPP) measurement processing technique for Global Navigation Satellite Systems (GNSS) is applied widely for scientific applications that require sub-metre level accuracy with few obstructions. ... -
Analysis and Conditioning of GNSS Measurements from Smartphones for Precise Point Positioning in Realistic Environments
(2020-11-13)With the availability of raw GNSS code and carrier-phase measurements from dual-frequency chips in smartphones, Precise Point Positioning (PPP) can be used to improve the accuracy of the positioning solution offered by ... -
Investigating Triboelectric Discharge at Gale Crater, Mars
(2020-11-13)Saltation-induced triboelectric discharge has been theorized to occur on Mars, how- ever, it has never been observed in-situ. It is hypothesized to play a key role in trace gas variation at Gale Crater, specifically as a ... -
Exploitation of Deep Learning in the Automatic Detection of Cracks on Paved Roads
(2020-11-13)Information on the severity of pavement cracks is critical for pavement repair services. This study aimed to exploit the applications of deep learning networks to improve the detection and classification of pavement cracks. ... -
Indoor Positioning Using WLAN Signal Fingerprint Matching and Path Evaluation with Retroactive Adjustment on Mobile Devices
(2020-11-13)The availability of GNSS has spurred a plethora of location-aware services. However, GNSS are only reliably available outdoors, leaving a large gap for a solution in indoor environments where people spend most of their ... -
Ultra-Wideband Based UAV Positioning in GNSS Denied Environment
(2020-08-11)GNSS-IMU-based navigation has been introduced in the mid-90s and still a key component of UAV navigation. However, it has a critical drawback to operate in downtown core areas where high-rise buildings often interfere with ... -
The New Concept of GRACE Gradiometry and the Unravelling of the Mystery of Stripes
(2020-08-11)For nearly two decades, the Gravity Recovery and Climate Experiment (GRACE) and GRACE-Follow On (GRACE-FO) missions have been widely used to quantify mass transfers within the Earth. We perform analysis on the on-board ... -
Laboratory Electrical DC Resistivity of Serpentinite, Graphite, Oxide and Sulfide Minerals
(2020-08-11)Radar remote sensing and Ground Penetrating Radar (GPR) are effective techniques for geological subsurface investigations. Planetary missions, such as Apollo-17 and Change-3, have used GPR as a tool for investigating the ... -
A Comparison Study on Control Moment Gyroscope Arrays and Steering Laws
(2020-05-11)Current reaction wheels and magnetorquers for microsatellite are limited by low slew rate and heavily depends on orbital parameters for coverage area. Control moment gyroscope (CMG) clusters offer an alternative solution ... -
Evaluation and Application of Max-DOAS Methods for Monitoring Aerosols, NO2, and SO2 in Urban and Industrial Environments
(2020-05-11)The ideal measurement technique to effectively address an air quality problem depends on the chemical and physical properties of the species and its environment. Multi-Axis Differential Optical Absorption Spectroscopy ... -
Precise Point Positioning Augmentation for Various Grades of Global Navigation Satellite System Hardware
(2020-05-11)The next generation of low-cost, dual-frequency, multi-constellation GNSS receivers, boards, chips and antennas are now quickly entering the market, offering to disrupt portions of the precise GNSS positioning industry ...
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