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Articles 201991 - 202020 of 2917682

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Software Defined Radio (Sdr) Based Sensing, Ajaya Dahal May 2024

Software Defined Radio (Sdr) Based Sensing, Ajaya Dahal

Theses and Dissertations

The history of Software-Defined Radios (SDRs) epitomizes innovation in wireless communication. Initially serving military needs, SDRs swiftly transitioned to civilian applications, revolutionizing communication. This thesis explores SDR applications such as Spectrum Scanning Systems, Contraband Cellphone Detection, and Human Activity Recognition via Wi-Fi signals. SDRs empower Spectrum Scanning Systems to monitor and analyze radio frequencies, optimizing spectrum allocation for seamless wireless communication. In Contraband Cellphone Detection, SDRs identify unauthorized signals in restricted areas, bolstering security efforts by thwarting illicit cellphone usage. Human Activity Recognition utilizes Raspberry Pi 3B+ to track movement patterns via Wi-Fi signals, offering insights across various sectors. Additionally, …

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Collective Bodies And Individual Experiences: The Case Of Chamber Tomb Four At Nikoleika Aigio, Achaea, Greece​, Daniel David Dillon May 2024

Collective Bodies And Individual Experiences: The Case Of Chamber Tomb Four At Nikoleika Aigio, Achaea, Greece​, Daniel David Dillon

Theses and Dissertations

The end of the Bronze Age was a tumultuous period throughout the Mediterranean, seeing the fall of the major palatial economy in Greece. This project seeks to reconstruct the lived experiences of individuals interred at the Nikoleika cemetery in eastern Achaea, utilizing a variety of methods to analyze biological profiles and pathological conditions. Through the analysis of the 55 burials of Chamber Tomb Four, it was found that low levels of pathology and the presence of locally-produced goods may emphasize the self-sufficient nature of Achaea during the Bronze Age. The osteobiographies of three primary burials also revealed a great deal …

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The Impact Of Academic Advising On Persistence In Nontraditional Students Completing A Baccalaureate Degree Online, Kali M. Dunlap May 2024

The Impact Of Academic Advising On Persistence In Nontraditional Students Completing A Baccalaureate Degree Online, Kali M. Dunlap

Theses and Dissertations

The increasing enrollment of nontraditional students in online degree programs has underscored the importance of effective academic advising practices. These students, often over the age of 25 and juggling full-time employment and family responsibilities, encounter unique challenges in navigating the asynchronous, online learning environment. Academic advisors play a pivotal role in mitigating these obstacles by fostering trust and delivering comprehensive support systems tailored to the needs of online learners. While previous studies have explored various advising models and approaches in connection with student satisfaction, inadequate attention has been given to assessing the quality of advising specifically tailored to nontraditional, online …

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Functional Complementation And Occidiofungin Susceptibility Of Fungal Actin Orthologs In S. Cerevisiae, Moshood Fagbolade May 2024

Functional Complementation And Occidiofungin Susceptibility Of Fungal Actin Orthologs In S. Cerevisiae, Moshood Fagbolade

Theses and Dissertations

Occidiofungin is an antifungal compound that targets the conserved cytoskeletal protein, actin. Despite >90% amino acid conservation between fungal actin proteins, sensitivity to occidiofungin has been shown to vary with C. albicans, F. oxysporum, and P. digitatum exhibiting a resistant profile relative to S. cerevisiae. To determine whether differences in the amino acid sequences of actin contribute to differences in occidiofungin susceptibility, we expressed the actin gene from these fungal organisms in the ACT1 S. cerevisiae shuffle strain. Functionality of actin gene products was determined by measuring growth kinetics, actin protein levels, nuclear position, and actin cable formation. Results demonstrated …

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Evaluation And Enhancement Of The Phosphorus Index For The Mississippi Delta, Felipe Fernandez Martinez May 2024

Evaluation And Enhancement Of The Phosphorus Index For The Mississippi Delta, Felipe Fernandez Martinez

Theses and Dissertations

The Lower Mississippi Alluvial Basin (LMAB) faces significant environmental challenges due to phosphorus (P) runoff from agricultural lands, contributing to eutrophication and aquatic ecosystem degradation. Excess nutrient runoff, particularly P, threatens water quality and contributes to hypoxia in the Gulf of Mexico. The current Mississippi Phosphorus Index (P-Index), a tool for assessing P loss vulnerability from agricultural fields, has shown limitations in its applicability across the diverse conditions of the Mississippi Delta, a sub-region of the LMAB. This research presents a comprehensive revision of the P-Index by employing a suite of analytical techniques and diverse data sources, including geospatial analysis, …

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Estimating Surface Reflectivity With Smartphone And Semi-Custom Gnss Receivers On Uas-Based Gnss-R Technology And Surface Brightness Temperature Using Uas-Based L-Band Microwave Radiometer, Md Mehedi Farhad May 2024

Estimating Surface Reflectivity With Smartphone And Semi-Custom Gnss Receivers On Uas-Based Gnss-R Technology And Surface Brightness Temperature Using Uas-Based L-Band Microwave Radiometer, Md Mehedi Farhad

Theses and Dissertations

Accurate measurement of soil moisture (SM) has a significant impact on agricultural production, hydrological modeling, forestry, horticulture, waste management, and other environmental fields. Particularly in precision agriculture (PA), high spatiotemporal resolution information about surface SM is crucial. However, the use of invasive SM probes and other sensors is expensive and requires extensive manpower. Moreover, these intrusive techniques provide point measurements and are unsuitable for large agricultural fields. As an alternative, this dissertation explores the remote sensing of surface SM by utilizing the surface reflectivity estimated from global navigation satellite systems reflectometry (GNSS-R) data acquired through smartphones and off-the-shelf, cost-effective U-blox …

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Evaluating The Bull Breeding Soundness Evaluation’S Utility As A Tool For Preventing Reproductive Inefficiency, Todd Galen Gunderson May 2024

Evaluating The Bull Breeding Soundness Evaluation’S Utility As A Tool For Preventing Reproductive Inefficiency, Todd Galen Gunderson

Theses and Dissertations

One of the most impactful challenges beef cow-calf producers face is the need to optimize reproductive efficiency. The ability of a veterinarian to identify potential sources of reproductive inefficiency is a valuable service they can offer. The breeding soundness evaluation (BSE) is one tool veterinarians use to identify subfertile bulls prior to use. This body of research shows that producers who have a defined breeding season have higher odds of hiring a veterinarian to perform BSEs, and that as breeding season length decreases, the probability of a management strategy that uses BSEs being profitable increases. Furthermore, not all veterinarians use …

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Feasibility And Effectiveness Of Physical Activity Program In People With Down Syndrome Using Self Determination Theory, Maria Haider May 2024

Feasibility And Effectiveness Of Physical Activity Program In People With Down Syndrome Using Self Determination Theory, Maria Haider

Theses and Dissertations

Autonomous physical activity (PA) is challenging for adults with Down syndrome (DS) therefore PA programs tailored around facilitators of PA in individuals with Down syndrome (DS) that also align with Self-determination theory (SDT) components could be a feasible and effective way of increasing PA. The purpose was to assess the feasibility and effectiveness of a physical activity program based on self-determination theory in adults with Down syndrome. A dance program was conducted twice a week for 8 weeks. Each session was 60 minutes long. Adults with DS (n = 8) were tested before and after intervention for basic psychological needs …

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Towards Clearer Paths: Addressing Camera Obstructions In Autonomous Vehicles Through Neural Networks, Nicholas J. Harvel May 2024

Towards Clearer Paths: Addressing Camera Obstructions In Autonomous Vehicles Through Neural Networks, Nicholas J. Harvel

Theses and Dissertations

This study addresses the challenge of lens obfuscations in off-road autonomous vehicles, which compromise the essential visual inputs for safe navigation. Using a tiered approach, the research employs neural network architectures for preliminary image classification, semantic segmentation, and image-to-image translation to rectify obscured visual inputs. Initial classification using MobileNetV2 sets the stage for U-Net-driven semantic segmentation to identify obfuscated regions, followed by a modified Pix-to-Pix model for image restoration. The evaluation showcases promising results in improving visual clarity, marking a significant stride towards enhancing autonomous vehicle operational robustness in off-road environments. This work lays a foundation for future explorations into …

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Assessing Northern Bobwhite Habitat Use And Short-Term Response To Prescribed Fire In An Intensively Managed Longleaf Pine Ecosystem, Jeffrey Martin Grayum May 2024

Assessing Northern Bobwhite Habitat Use And Short-Term Response To Prescribed Fire In An Intensively Managed Longleaf Pine Ecosystem, Jeffrey Martin Grayum

Theses and Dissertations

Effective conservation requires reliable knowledge of habitat selection and data describing the target species’ response to prominent management techniques. Herein, I describe northern bobwhite breeding season resource selection in an intensively managed longleaf pine ecosystem and investigate the influence of post-fire succession and days-since-fire on bobwhite use of recently burned areas. I recorded bobwhite locations three times per week and surveyed recently burned areas twice daily. I found that bobwhite prefer natural pine woodlands burned the current year and pine plantations, hardwood pine forest, and shrub/scrub communities burned 1-2 years ago. Bobwhite avoided natural pine woodlands burned 1-2 years ago, …

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Evaluating The Effects Of Poultry Litter Amendments On Escherichia Coli Populations, Virulence Genes, And Antimicrobial-Resistance Genes In Poultry Litter During A Live Grow-Out., Faith Henson May 2024

Evaluating The Effects Of Poultry Litter Amendments On Escherichia Coli Populations, Virulence Genes, And Antimicrobial-Resistance Genes In Poultry Litter During A Live Grow-Out., Faith Henson

Theses and Dissertations

Poultry litter can harbor pathogenic bacteria, including avian pathogenic Escherichia coli (APEC). Applying litter amendments is one strategy to improve bird health and potentially reduce pathogens. Biochar and PLT were applied as litter amendments in a live bird trial to study their effects on E. coli populations, APEC virulence genes (VAG), and antimicrobial resistance (AMR) genes. Samples were collected at days 0, 17, 29, and 41 to enumerate E. coli and store bacterial isolates for antimicrobial-resistance gene analysis. Data analysis showed litter amendments did not significantly affect overall E. coli populations. Grow-out time impacted E. coli populations, with reductions occurring …

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Insect Management Strategies Using Insect Growth Regulators In Mississippi Soybean, Sawyer Clayton Hopkins May 2024

Insect Management Strategies Using Insect Growth Regulators In Mississippi Soybean, Sawyer Clayton Hopkins

Theses and Dissertations

Soybean looper and corn earworm are economically damaging pests in Mississippi soybeans. Chemical control plays a large role in the control of these pests. Some producers have started applying an automatic co-application of insecticide and fungicide at the R3 growth stage. Insect growth regulators are a commonly used insecticide for this management strategy. The purpose of this research was to evaluate the impact of insect growth regulators on soybean looper and corn earworm mortality when applied with an automatic fungicide application at the R3 growth stage in soybean. Insecticide treatments included methoxyfenozide, diflubenzuron, and novaluron. These insect growth regulators showed …

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Producing College And Career Ready Graduates In Rural High Poverty School Districts, Hilute Hudson Iii May 2024

Producing College And Career Ready Graduates In Rural High Poverty School Districts, Hilute Hudson Iii

Theses and Dissertations

This capstone project addresses the crucial task of equipping students from rural and poverty-stricken school districts for success beyond high school. While conventional markers of academic achievement often center around standardized testing, this study takes a wider perspective, emphasizing comprehensive approaches to education. By conducting a quantitative analysis that includes surveys of staff and faculty, this research explores the effectiveness of different strategies aimed at nurturing college and career readiness among students in these districts. The findings demonstrate a powerful narrative: educators can greatly improve graduation rates and post-graduation success by going beyond traditional test preparation methods. Key strategies include …

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The Influence Of Cotton Technology On Plant Based Scouting Methods And Performance Of Commonly Used Insecticides For Tarnished Plant Bug (Hemiptera: Miridae)Prior To Bloom In Mississippi Cotton, James Michael Huoni Jr. May 2024

The Influence Of Cotton Technology On Plant Based Scouting Methods And Performance Of Commonly Used Insecticides For Tarnished Plant Bug (Hemiptera: Miridae)Prior To Bloom In Mississippi Cotton, James Michael Huoni Jr.

Theses and Dissertations

The focus of this research was to evaluate commonly used insecticides and plant based scouting practices in cotton, Gossypium hirsutum (L.), prior to bloom for tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), management. As well as determine the influence of ThryvOn technology on these research objectives. Data indicate that imidacloprid may have a limited fit in non-ThryvOn cotton, while the additional mode of action afforded by ThryvOn technology could extend imidacloprid and other insecticide’s effective use prior to bloom. Additionally, sulfoxaflor and acephate remain the best products for pre-bloom management. When evaluating differences between plant based scouting methods prior …

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Catalytic Upgrading Of Rice Straw Bio-Oil With Alcohols Using Different Bimetallic Magnetic Nano-Catalysts, Alhassan Ibrahim May 2024

Catalytic Upgrading Of Rice Straw Bio-Oil With Alcohols Using Different Bimetallic Magnetic Nano-Catalysts, Alhassan Ibrahim

Theses and Dissertations

This dissertation addresses the surging global demand for sustainable energy alternatives and biobased products, driven by population growth and the imperative to shift away from finite fossil fuels amidst climate change. The research centers on the catalytic upgrading of rice straw bio-oil, employing bimetallic magnetic nano-catalysts on rice straw-derived biochar to align with the imperative for environmentally conscious energy solutions. In the initial phase, the study systematically explores upgrading processes using varied alcohols, specifically ethanol, and butanol, under mild conditions to enhance bio-oil quality. The detailed evaluation of catalyst composition reveals a notable reduction in oxygen content, coupled with a …

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Evaluating The Vertical Transmission Potential Of Salmonella Reading In Broiler Breeders, Abubakar Shitu Isah May 2024

Evaluating The Vertical Transmission Potential Of Salmonella Reading In Broiler Breeders, Abubakar Shitu Isah

Theses and Dissertations

Salmonellosis, a significant foodborne illness in humans, is caused by Salmonella, with poultry and poultry products acting as significant reservoirs and sources of human infection. Salmonella enterica subspecies enterica serotype Reading has recently emerged as a notable foodborne pathogen responsible for extensive multistate human outbreaks in North America. This study focused on evaluating the capacity of the emerged serotype to colonize broiler breeder reproductive tissues and potentially contaminate eggs, indicating the potential for vertical transmission. For this investigation, two Salmonella Reading strains were utilized, one associated with outbreaks and another non-outbreak strain. Both strains were initially modified with bioluminescent marker …

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An Examination Of Middle School And High School Special Education Students In Inclusion Classrooms Employing Co-Teaching Model, Antwaunette Jones-Taylor May 2024

An Examination Of Middle School And High School Special Education Students In Inclusion Classrooms Employing Co-Teaching Model, Antwaunette Jones-Taylor

Theses and Dissertations

The Individuals with Disabilities Education Act mandates that all school districts provide a free appropriate public education to students with Individualized Education Plans in their least restrictive environment. Co-teaching in inclusion classrooms is a collaborative effort, with a general education teacher and a special education teacher, to provide academic and behavioral support to students with disabilities with their non-disabled peers. A review of the literature identified several studies conducted over the years that document the effects of employing co-teaching models in inclusion classrooms for middle school special education students and high school special education students. The purpose of this qualitative …

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Improving Cultural Safety: A Thematic Analysis Of Older Rural African Americans’ Experiences With The U.S. Healthcare System, Sarah Marie Israel May 2024

Improving Cultural Safety: A Thematic Analysis Of Older Rural African Americans’ Experiences With The U.S. Healthcare System, Sarah Marie Israel

Theses and Dissertations

Despite an increase in research regarding the healthcare outcomes and experiences of diverse groups, some significant gaps in the literature remain. Among the most understudied and underserved groups are those with intersectional identities. Although researchers have made significant efforts to increase research regarding health care experiences of people of color, older adults, and rural populations, less is known about the health care experiences of older rural African Americans. Due to the lack of research focusing on the unique experiences of this intersectional group, qualitative research was an important first step towards broadening this research base. This study utilized a cultural …

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Socioeconomic Status And Rural Community College Students’ Academic Outcomes, Robert Jason Kelly May 2024

Socioeconomic Status And Rural Community College Students’ Academic Outcomes, Robert Jason Kelly

Theses and Dissertations

The purpose of this quantitative research study was to determine if differences exist in academic achievement based on student SES as measured by grade point average (GPA), credit hours earned, and completion of the academic year for rural community college students enrolled during the 2018-19 academic year. The study used existing data from a multi-campus rural community college located in the Southeastern region of the United States. To answer the research questions, existing data were collected from this community college. The independent variable collected was SES, as measured by Pell grant eligibility. The dependent variables collected included GPA, credit hours, …

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Multi-Cloud Architecture Attacks Through Application Programming Interfaces, Theodore Edward Lander Jr. May 2024

Multi-Cloud Architecture Attacks Through Application Programming Interfaces, Theodore Edward Lander Jr.

Theses and Dissertations

Multi-cloud applications are becoming a universal way for organizations to build and deploy systems. Multi-cloud systems are deployed across several different service providers, whether this is due to company mergers, budget concerns, or services provided with each provider. With the growing concerns of potential cyber attacks, security of multi-cloud is an important subject, especially within the communications between systems through Application Programming Interfaces (APIs). This thesis presents an in depth analysis of multi-cloud, looking at APIs and security, creates a mock architecture for a multi-cloud system, and executes a cyber attack on this architecture to demonstrate the catastrophic effects that …

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Adolescent Black Girls Anger And Aggression: What We Can Learn, Dawn Michelle Latiker May 2024

Adolescent Black Girls Anger And Aggression: What We Can Learn, Dawn Michelle Latiker

Theses and Dissertations

This case study aimed to understand adolescent Black girls’ response when becoming angry as related to verbal and physical aggression. The study focused on the triggers for anger of 7 Black girls, current strategies in place at the school to help manage their anger and aggression, and it sought to determine if the girls were able to recognize when they became angry. This information is of importance because the school suspension rate has increased for Black girls (Morris, 2013), and there are limited studies to help them manage their anger in order to feel accepted in schools, develop relationships in …

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Disruptors And Resilience Capabilities Of Pharmaceutical Supply Chains Exposed To Rare Catastrophic Disasters: Case Studies Of One Localized And One Global Disaster, Jeanne-Marie Elizabeth Lawrence May 2024

Disruptors And Resilience Capabilities Of Pharmaceutical Supply Chains Exposed To Rare Catastrophic Disasters: Case Studies Of One Localized And One Global Disaster, Jeanne-Marie Elizabeth Lawrence

Theses and Dissertations

In recent years, rare catastrophic disasters have triggered pharmaceutical supply chain disruptions, resulting in product shortages and other problems that have negatively impacted healthcare delivery. Since the health sector is part of many nations’ critical infrastructure, ensuring minimal disruption in the supporting supply chains is an essential aspect of national security. While traditional risk management approaches have proven adequate for handling independent routine operational risks, these methods are inadequate for infrequent disruptive risks that propagate further risks, producing a domino effect in complex systems. Since today’s pharmaceutical supply chains have many characteristics of complex systems, elucidating the disruptive risks and …

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Abundance And Control Of Nuisance Watershield (Brasenia Schreberi) Populations In Mississippi, Mackenzie M. Lee May 2024

Abundance And Control Of Nuisance Watershield (Brasenia Schreberi) Populations In Mississippi, Mackenzie M. Lee

Theses and Dissertations

Aquatic nuisance plants (ANS), like watershield (Brasenia schreberi), negatively affect water chemistry, ecosystem ecology, and human uses of waterbodies if not properly managed. Understanding ecological predictors as well as efficient control strategies is needed for successful control of ANS. This research assessed 1) potential environmental and ecological predictors of watershield prevalence along with 2) submersed injections of flumioxazin herbicide for watershield control. Twenty-one lakes in the state of Mississippi were surveyed for watershield presence. Watershield prevalence was not correlated to water clarity or plant diversity suggesting these are not drivers of watershield prevalence. A series of mesocosm and field trials …

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Effectiveness Of Omeka Virtual Collections For Engaging Dunn-Seiler Museum’S Middle School Audiences, Amanda Mayo May 2024

Effectiveness Of Omeka Virtual Collections For Engaging Dunn-Seiler Museum’S Middle School Audiences, Amanda Mayo

Theses and Dissertations

This study assessed effectiveness of the Dunn-Seiler Museum's Omeka Virtual Platform by comparing student learning after virtual and hands-on informal outreach activities. The research, conducted in two Mississippi middle schools, focused on students’ (N=99) content gains and affective responses when engaging with fossil specimens that illustrate shifts in sea levels in Mississippi’s geological past. Data were categorized into three sections: content, affective response, and drawing portion. This mixed-methods research encompassed scoring student tests, coding student drawings, and identifying stable themes through teacher interviews. Analysis of pre-and post-tests for Control (hands-on) and Experimental (virtual specimens) groups revealed no significant differences in …

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The Impact Of Financial Aid Awards On Alabama Community College Student Success, Theresa V. Mays May 2024

The Impact Of Financial Aid Awards On Alabama Community College Student Success, Theresa V. Mays

Theses and Dissertations

Financial pressures, encompassing factors such as tuition, fees, books, and work-life balance, consistently substantially influence student success in higher education. Existing research highlights finances' significant role in a student's withdrawal decision. This study aimed to assess the impact of financial aid awards on the retention, persistence, and completion of students enrolled in two community colleges in Alabama, primarily those residing in rural or urban areas. The research focused on the retention and completion outcomes of first-time, full-time students who began their enrollment at two community colleges, UCC and RCC, in the fall of 2017 and received financial aid. Utilizing a …

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Exploring Homeschool Parents’ Willingness To Incorporate Agriculture Into Curriculum: Parental Perceptions Of Teaching Agricultural Education., Allyson Moore May 2024

Exploring Homeschool Parents’ Willingness To Incorporate Agriculture Into Curriculum: Parental Perceptions Of Teaching Agricultural Education., Allyson Moore

Theses and Dissertations

Students in public and private schools have a greater opportunity to receive access to agriculture education, yet there is a group of students who are being left behind in the opportunity to receive agriculture literacy. Many students do not have access to agriculture education, yet there is a strong urge for graduates with agricultural degrees. There is a lack of research in homeschooled students receiving agriculture curriculum in their studies. As the population continues to steadily grow, the need for agriculturally literate consumers has increased. Promoting students' ability to receive agriculture curriculum will build agriculture literacy within the education system. …

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Uncertainty-Aware Path Planning On Aerial Imagery And Unknown Environments, Charles Alan Moore May 2024

Uncertainty-Aware Path Planning On Aerial Imagery And Unknown Environments, Charles Alan Moore

Theses and Dissertations

Off-road autonomous navigation faces a significant challenge due to the lack of maps or road markings for planning paths. Classical path planning methods assume a perfectly known envi- ronment, neglecting the inherent perception and sensing uncertainty from detecting terrain and obstacles in off-road environments. This research proposes an uncertainty-aware path planning method, URA*, using aerial images for autonomous navigation in off-road environments. An ensemble convolutional neural network model is used to perform pixel-level traversability estima- tion from aerial images of the region of interest. Traversability predictions are represented as a grid of traversal probability values. An uncertainty-aware planner is applied …

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Submissive Natures, Subversive Acts: Power, Prescriptive Literature, And The Female Voice In Shakespeare’S Comedies, Joseph N. Newell May 2024

Submissive Natures, Subversive Acts: Power, Prescriptive Literature, And The Female Voice In Shakespeare’S Comedies, Joseph N. Newell

Theses and Dissertations

This thesis explores prescriptive literature and conduct books, specifically The Book of Homilies, and how these prescriptions manifest in Shakespeare’s work. This text examines the depictions of marital relationships and argues that the actions of husbands in two of Shakespeare’s comedies, The Taming of the Shrew and The Merchant of Venice, deviate from prescriptive ideals that homilies deem proper for the husband-and-wife relationship. Through the combination of new historicism and gender criticism, this thesis suggests that Katherine and Portia use submission to gain agency in moments when they seem to have none while showing that the men do not fulfill …

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Waste Separation And Perceptions Of Environmental Health In A College Student Population, Anna Foster Nickels May 2024

Waste Separation And Perceptions Of Environmental Health In A College Student Population, Anna Foster Nickels

Theses and Dissertations

Florists must analyze business practices to become environmentally savvy. This study investigated whether the introduction of sustainable waste practices into a college floral design course influenced the student’s perception of environmental health. Two groups of students enrolled in the basic floral design course at Mississippi State University completed a survey on environmental health at the start and end of the semester. One group sorted their lab wastes into compostable and landfill material. Results indicated students who separated their floral waste maintained the same level of environmental concern throughout the testing period while the environmental health scores of those who did …

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Deep Learning Based Soil Moisture Retrieval Using Gnss-R Observations From Cygnss, M M Nabi May 2024

Deep Learning Based Soil Moisture Retrieval Using Gnss-R Observations From Cygnss, M M Nabi

Theses and Dissertations

The National Aeronautics and Space Administration’s (NASA) Cyclone Global Navigation Satellite System (CYGNSS) mission has grown substantial attention within the land remote sensing community for estimating soil moisture (SM), wind speed, flood extent, and precipitation by using the Global Navigation Satellite System-Reflectometry (GNSS-R) technique. CYGNSS constellation generates important earth surface information called Delay-Doppler Maps (DDMs) from GNSS reflection measurements. Many previous findings considered only designed features from CYGNSS DDMs, such as the peak value of DDMs, whereas the whole DDMs are affected by SM, topography, inundation, and overlying vegetation. This dissertation explores a deep learning approach for estimating SM by …

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