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Master's Projects

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Now showing 1 - 10 of 211
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Space Object Tracking from CubeSats utilizing Low-Cost Software Defined Radios

2023-12 , Mealey, Alex

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America’s Gayborhoods: A Study in the Cultural Preservation of LGBTQ+ Communities

2023-12 , Brennan, Laurence

In recent years, Atlanta, GA has seen a boon in development, catapulting housing demand and prices, particularly in its densest and most desirable neighborhoods. The Midtown neighborhood’s Garden District, commonly referred to as the ‘Gayborhood’ is one such place where long-time residents are being pushed out. The exodus of queer trailblazers combined with an influx of new, heteronormative populations in dense new high rises, dilutes the proportion of LGBTQ+ anchor residents who patronized the shops and cafes that served as the backbone of this community. This exploratory effort reviews literature and research from other studies and governmental entities and conducts a comparative analyses of planning interventions that other U.S. cities have used as tools toward cultural preservation. This analysis, identifies policies, ordinances, or other successful practices of stewarding the heritage of identity-based places, to prevent further erasure of Atlanta’s LGBTQ+ enclaves.

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Development of an Open Source Data Visualization and Automated Testing Platform for CubeSat Subsystems

2023-08 , Bustos, Alexander

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Redefining the Food Desert: A Study of Grocery Store Accessibility Within Metropolitan Atlanta (2023)

2023-07-28 , Moss, David

“Food deserts” are areas of an urban environment that are judged to have no accessibility to a nearby grocery store. Traditionally, this accessibility is based on a simple measure of Euclidean distance, i.e. a circle of a given radius drawn around the nearest grocery store, thus ignoring the actual road network used to travel to said store. This paper proposes a methodology for constructing isochrones, polygons which both incorporate the actual distance travelled to reach a given grocery store, as well as the time it takes to traverse said distance via a variety of different modes. Doing so dramatically reduces the estimated coverage area of a given grocery store, and helps visualize the inequities inherent in using distance-based measures of accessibility without accounting for the mode taken to travel that distance, which particularly harms individuals without access to cars or bikes.

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VISORS Mission Orbit & Dynamics Simulation Using a Realtime Dynamics Processor

2023-12-01 , Kimmel, Elizabeth

VIrtual Super-resolution Optics using Reconfigurable Swarms (VISORS) is a precision formation-flying mission which uses two 6U CubeSats with a Science Mode separation distance of 40 meters to emulate a 40-meter focal length diffractive optic telescope. Due to the novelty of the technology used to achieve the stringent relative positioning requirements, the dynamics of these orbits must be simulated to verify the concept of operations (ConOps), the commercial spacecraft bus flight software (FSW), the guidance, navigation, and control (GNC) formation-keeping algorithm, and the attitude determination and control system (ADCS) performance, among others. Verifying these aspects helps ensure that issues such as reaction wheel saturation, pointing errors, or collision risks, among others, do not arise during the mission. This paper describes the work done in simulating the spacecraft dynamics during the mission’s Science Operations using COSMOS to interface with the Realtime Dynamics Processor (RDP) and spacecraft bus Engineering Design Unit (EDU) provided by Blue Canyon Technologies (BCT).

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Planning for a Climate Driven Implementation of Mobility Hubs on Georgia Tech’s Campus

2023-12 , Murali, Malavika

Mobility hubs are an efficient and effective transportation solution that promotes connectivity and provides last-mile modal options for commuters and residents through integrating multi-modal transportation infrastructure in one convenient transitional space. In addition to encouraging place-making efforts and transforming cities with innovative technologies, mobility hubs are foundationally a strategy for addressing the climate change crisis, which is substantially driven by transportation related carbon and carbon-equivalent emissions. Therefore, a focus on a climate driven implementation of mobility hubs is pertinent to accomplishing the goal of reducing carbon emissions and creating resilient transportation infrastructure. This paper provides a case study analysis of best practice strategies for implementing mobility hubs from three institutions across the United States, which informs a review of Georgia Tech's plans for improving mobility on campus as outlined by the 2023 Comprehensive Campus Plan (CCP). This analysis is used to determine what elements are critical to creating resilient, sustainable, and accessible mobility hubs and to propose a climate driven approach to implementing the mobility plans of the institution. Through this analysis, 14 locations are identified for potential mobility hubs throughout campus that incorporate 11 sustainability and accessibility elements which are detailed in the paper.

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Satellite Orbit Classification through Machine Learning

2023-08 , Kalidindi, Lakshmi Kundana

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Towards a Safer Atlanta: Identifying High-Priority Intersections for Leading Pedestrian Intervals

2023-12 , Mase, Heather

This study addresses the critical issue of pedestrian safety and the need to prioritize safety interventions in the City of Atlanta. It specifically focuses on leading pedestrian intervals (LPIs), which adjust signal timing to give pedestrians a head start when crossing the street at intersections. While traditional safety analyses rely primarily on historical collision data, this analysis takes a systemic and proactive approach to safety by incorporating risk factors such as roadway characteristics, the surrounding built environment, and socioeconomic characteristics of nearby residents. The primary objective of this research is to determine where LPIs should be implemented in the City of Atlanta by ranking and identifying high-risk intersections. The methods comprise of six major steps: (1) factor selection; (2) data collection; (3) database construction; (4) calculation of factor weights, using the Analytic Hierarchy Process (AHP); (5) factor normalization and aggregation, involving scaled scores and weighting; and (6) determination of the final signalized intersection ranking for LPI implementation, based on a rank-order prioritization process. Results from this analysis reveal that many of the highest risk intersections are primarily concentrated around Downtown Atlanta and West Atlanta. The proposed data-driven framework provides a comprehensive and systematic approach to guide decision-makers and safety advocates in directing resources and support to intersections with the greatest need for pedestrian safety intervention. Overall, this research contributes to the advancement of safety, sustainability, and equity in the City of Atlanta.

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Site Suitability Analysis of Mobility Hubs: Determining Suitable Locations for Transit Center Enhancement in Metro Atlanta

2023-08 , Murali, Malavika

Mobility hubs are an efficient and effective transportation solution that promotes connectivity and last-mile modal options for commuters and residents that integrate multi-modal transportation infrastructure. In addition to encouraging place-making efforts, mobility hubs transform cities with innovative approaches to seamless modal transitions and integrating smart technologies for wayfinding, safety, and accessibility. This study identified three existing transit stations within Fulton, Clayton, and DeKalb counties in Georgia that can be turned into regional shared mobility hubs through analyzing origin-destination data of these stations, the surrounding land uses, and the population demographics of these areas. These three counties were selected as they make up the existing Metropolitan Atlanta Regional Transportation Authority (MARTA) passenger rail network. Based on research on the benefits of mobility hubs, the factors of close distance, added connectivity, and proximity to activity centers are proven to improve the implementation of mobility hubs. Thus, the purpose of this study is to determine the potential for the tri-county area to implement mobility hubs at regional scales to expand the reach of alternative modes of transportation, and to address the issues of inaccessible transportation networks. After analyzing the transit stations using demographic data of the study area and a multi-criteria analysis (MCA), three locations were found to be ideal sites for developing into mobility hubs: the Midtown, Decatur, and Dome/GWCC/Philips/CNN MARTA stations.

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Development of an Autonomous Distributed Fault Management Architecture for the VISORS Mission

2023-08-01 , Paletta, Antoine

CubeSat formations have been identified as a new paradigm for addressing important science questions, but are often early adopters of new technologies which carry additional risks. When these missions involve proximity operations, novel fault management architectures are needed to handle these risks. Building on established methods, this paper presents one such architecture that involves a passively safe relative orbit design, interchangeable chief-deputy roles, a formation level fault diagnosis scheme, and an autonomous multi-agent fault handling approach. This architecture focuses on detecting faults occurring on any member of a spacecraft formation in real time and performing autonomous decision making to resolve them and keep the formation safe from an inter satellite collision. The NSF-sponsored Virtual Super-resolution Optics with Reconfigurable Swarms (VISORS) mission, which consists of two 6U CubeSats flying in formation 40 meters apart as a distributed telescope to study the solar corona, is used as a case study for the application of this architecture. The underlying fault analysis, formulation of key elements of the fault detection and response strategy, and the implementation as flight software for VISORS are discussed in the paper.

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