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.
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Showing 1 to 20 of 20 for “"Satellite Tracking"”.
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Evaluation of Probabilistic Methodology for Predicting Satellite Tracking Resources
… methodology for estimating the ability of satellite tracking networks to provide tracking and data acquisition services to large constellations of satellites. This approach, developed by Hagar is evaluated using Monte Carlo simulations of optimal satellite contact scheduling on a tracking …
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Radio and satellite tracking and detecting systems for maritime applications
Submitted in fulfillment of the requirements of the Doctor of Technology Degree in Information Technology, Durban University of Technology, Durban, South Africa, 2014.
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System Design and Implementation of the Virginia Tech Optical Satellite Tracking Telescope
The Virginia Tech Optical Satellite Tracking Telescope (VTOST) aims to test the feasibility of a commercial off-the-shelf (COTS) designed tracking system for Space Situational Awareness (SSA) data contribution. A novel approach is considered, combining two COTS systems, a high-powered telescope, …
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A microprocessor-based experiment controller for the VPI & SU satellite tracking station
In many applications the microprocessor can represent an attractive design alternative to hardwired integrated circuitry. Such designs can offer substantial in teras of flexibility, cost and reliability, generally at the expense of operating speed. This paper contains a detailed description of such …
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A Feasibility Study On The Implementation Of Satellite-To-Satellite Tracking Around A Small Near-Earth Object
… </p> <p>This thesis investigates the use of satellite-to-satellite tracking (SST) to map the gravity field of a small NEO on the order of 500 m or less. An analysis of the mission requirements of two previously flown SST missions, GRACE and GRAIL, is conducted. Additionally, a simulation is …
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Analysis of seabird observation and satellite tracking data in the Falkland Islands to assess suitability for proposing Marine Important Bird Areas
… project collated multiple at-sea observer and satellite tracking dataset sets to examine whether sites of high species numbers or abundance were linked to seabed bathymetry, to assess whether listed threatened species were found in particular locations, and to discover if any areas showed …
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Determining Critical Internesting and Foraging Habitats for the Conservation of Sea Turtles in Gabon, Africa Using Satellite Tracking and Stable Isotope Analysis
… bycatch, the largest threat to this species. Satellite transmitters were used to determine the movement and dive behavior of 21 female olive ridley turtles tagged in Pongara National Park, Gabon during the 2012, 2013, and 2015 nesting seasons. A switching state space model was used to filter …
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Analysis of the internal structure of storm systems using a dual polarized radar
… polarized radar located at the Virginia Tech Satellite Tracking Station scanned two different sites and collected atmospheric backscattering information. This information was processed by computers at the ground station and converted into reflectivity (Z) and differential reflectivity (ZDR) …
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Understanding and mitigating vulnerable bycatch in southern African longline and trawl fisheries
… is presented, which is supported by results from satellite tracking of Leatherback Turtles Dermochelys coriacea indicating a high degree of overlap with fishing effort. Satellite tracking of Black-browed Thalassarche melanophrys and White-capped T. steadi Albatrosses reveal striking differences in …
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Migratory Ecology of Sea Turtles
… method for identifying behavioral changes in satellite telemetry based on Change-Point Analysis (CPA). Subsequently, I applied it to analyze the post-nesting leatherback turtles tracked from the iSimangaliso Wetland Park, South Africa. Half (n = 8) of the turtles tracked migrated to foraging …
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A Comparison of Autonomous Navigation Methods for Earth-Moon Halo Orbits
… it is becoming clear that our current methods of satellite tracking for spacecraft around the Moon are unequipped to handle this increase in demand. Therefore, a reliable method of performing autonomous navigation in lunar space is required to facilitate this new interest. Many methods of …
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Orbit determination using modern filters/smoothers and continuous thrust modeling
… costs and longer lifespans for certain types of satellites. Because these satellites frequently undergo continuous thrust, predicting their motion and performing orbit determination on them has introduced complications for space surveillance networks. One way to improve orbit determination for …
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Biologging for marine megafauna conservation: animal tracking, environmental monitoring, and modelling approaches.
… in tackling diverse conservation questions. Satellite tracking of leatherback turtles (Dermochelys coriacea) in Equatorial Guinea revealed spatial mismatches between existing marine protected areas and critical nesting habitat, supporting recommendations for MPA expansion. Novel …
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The basking shark Cetorhinus maximus: movement, behaviour and connectivity in the Northeast Atlantic
… (coloured and numbered visual tags; n=465) and satellite tracking (Smart Position and Temperature tags, SPOT; n=10) methods to investigate the interconnectivity of basking shark surface hotspots across the North Atlantic. Re-sightings and satellite tracks showed connectivity within given years …
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Habitat, abundance and productivity of the Asian Houbara Chlamydotis macqueenii in Uzbekistan
… taller vegetation experienced greater success. Satellite-tracking revealed high site-fidelity of males to their display sites and intra-seasonal fidelity of females to breeding areas. During post-breeding dispersal adult birds were found to be using completely different, more productive in terms …
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Optical Tracking and Spectral Characterization of Cubesats for Operational Missions
… Earth orbit is of growing concern to operational satellites from the government and commercial sector. With an uptick in worldwide satellite launches and the growing adoption of the CubeSat standard, the number of small objects in orbit are increasing at a faster pace than ever. As a result, a …
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Investigating automated bird detection from webcams using machine learning
… radio trackers, global positioning systems, and satellite tracking systems being used today. It has become expensive, laborious, and time-consuming to analyze the large datasets using manual and traditional statistical techniques. Recent developments in the field of deep learning are showing …
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New Business Initiatives and Financial Performance
… synergy. Partnerships with Suppliers (PWS), EDI, Satellite Tracking Systems (STS) and ABC are significantly associated with ROI improvement in the motor carrier industry. Concurrent use of PWS with STS and of EDI with ABC generate a positive synergy. The third study concludes that positive …
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Pointing system performance analysis for optical inter-satellite communication on CubeSats
… is an attractive option for improving inter-satellite links (ISL) for resource-constrained CubeSats, which have emerged as a standard form of a small satellite since 1999. However, lasercom requires much more accurate pointing because of its narrower beam width. Accurate pointing is not …
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Autonomous Space Surveillance for Arbitrary Domains
… congested every day and the task of accurately tracking satellites is paramount for the continued safe operation of both manned and unmanned space missions. In addition to new spacecraft launches, satellite break-up events and collisions generate large amounts of orbital debris dramatically …