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Low Cost, Low Complexity Sensor Design For Non-Cooperative Geolocation Via Received Signal Strength, Michael S. Butler
Low Cost, Low Complexity Sensor Design For Non-Cooperative Geolocation Via Received Signal Strength, Michael S. Butler
Theses and Dissertations
Obtaining accurate non-cooperative geolocation is vital for persistent surveillance of a hostile emitter. Current research for developing a small, cheap and energy efficient sensor network for non-cooperative geolocation measurements via received signal strength (RSS) is limited. Most existing work focuses on simulating a non-cooperative network (NN) and in doing so, simulated models often ignore localization errors caused from the hardware processing raw RSS data and often model environment-dependent errors as random. By comparing real-time measured non-cooperative geolocation data to a simulated system a more accurate model can be developed. This thesis discusses the development and performance of a small, low …
Integration Of Cold Atom Interferometry Ins With Other Sensors, Aaron J. Canciani
Integration Of Cold Atom Interferometry Ins With Other Sensors, Aaron J. Canciani
Theses and Dissertations
Inertial navigation systems (INS) using cold-atom interferometry are currently under development, and sensors in these systems are expected to be several orders of magnitude more ccurate than current navigation grade sensors. This signi cant increase in accuracy motivates the need to explore how these high accuracy inertial navigation systems can be integrated with other sensors. This research focuses on methods of integrating cold atom interferometry INS with conventional navigation grade INS, as well as with GPS. Results from a full 6 degree of freedom simulation show that integrating CAI INS with navigation grade INS is a successful way to address …
Field Emission Of Thermally Grown Carbon Nanostructures On Silicon Carbide, Jonathon M. Campbell
Field Emission Of Thermally Grown Carbon Nanostructures On Silicon Carbide, Jonathon M. Campbell
Theses and Dissertations
CNTs are known to be excellent field emitter due to their unique physical and electrical properties. Because of their semi-metallic nature, CNT do not suffer the thermal runaway found in metallic emitters, and their near one-dimension shape make them an ideal emission sources. CNTs growth by thermal decomposition of silicon carbide does not utilize a catalyst, therefore relatively defect free. One drawback to this method, however is that the CNT grow in a very dense carpet. This very dense CNT carpet comes under the affect of field emission screening effects which dampen the field emission. In this thesis, silicon carbide …
Automated Aerial Refueling Position Estimation Using A Scanning Lidar, Joseph A. Curro Ii
Automated Aerial Refueling Position Estimation Using A Scanning Lidar, Joseph A. Curro Ii
Theses and Dissertations
This research examines the application of using a scanning Light Detection and Ranging(LiDAR) to perform Automated Aerial Refueling(AAR). Specifically this thesis presents two algorithms to determine the relative position between the tanker and receiver aircraft. These two algorithms require a model of the tanker aircraft and the relative attitude between the aircraft. The first algorithm fits the measurements to the model of the aircraft using a modified Iterative Closest Point (ICP) algorithm. The second algorithm uses the model to predict LiDAR scans and compare them to actual measurements while perturbing the estimated location of the tanker. Each algorithm was tested …
Value Focused Thinking In Developing Aerobatic Aircraft Selection Model For Turkish Air Force, Emel Bengoz
Value Focused Thinking In Developing Aerobatic Aircraft Selection Model For Turkish Air Force, Emel Bengoz
Theses and Dissertations
The purpose of this research is to lessen the potential human errors by using decision analysis and cost analysis techniques. This research uses Value- Focused Thinking in conjunction with Multi-Objective Decision Analysis and Cost Analysis. It creates a decision-making model that allows decision makers to interact with analysts by specifying his/her objectives, values and preferences. On the other hand, cost analysis process determines cost effective alternatives. Alternatives are scored using 17 evaluation measures that are identified by interviews with the decision maker and stakeholders. Robustness of the model is tested by sensitivity analysis. Results of sensitivity analysis on current weights …
Using Qr Factorization For Real-Time Anomaly Detection Of Hyperspectral Images, Kelly R. Bush
Using Qr Factorization For Real-Time Anomaly Detection Of Hyperspectral Images, Kelly R. Bush
Theses and Dissertations
Anomaly detection has been used successfully on hyperspectral images for over a decade. However, there is an ever increasing need for real-time anomaly detectors. Historically, anomaly detection methods have focused on analysis after the entire image has been collected. As useful as post-collection anomaly detection is, there is a great advantage to detecting an anomaly as it is being collected. This research is focused on speeding up the process of detection for a pre-existing method, Linear RX, which is a variation on the traditional Reed-Xiaoli detector. By speeding up the process of detection, it is possible to create a real-time …
Analysis Of Kc-46 Live-Fire Risk Mitigation Program Testing, Chad N. Chamberlain
Analysis Of Kc-46 Live-Fire Risk Mitigation Program Testing, Chad N. Chamberlain
Theses and Dissertations
Increased emphasis from the Director of Operational Test and Evaluation (DOT&E) over the past few years to include statistical rigor in all testing has brought an augmented look at testing across the Department of Defense. This thesis examines the methodology currently used in live fire testing, particularly in the case of risk mitigation of the KC-46 dry-bay fire test program. The thesis addresses gaps within the methodology and analyzes the results of a statistically rigorous test. The research furthers work on modeling the characterization of ballistic impact flash by validating concurrent models and characterizing the errors prone to these models …
A Prototype Overview For Allocating Usaid Foreign Aid, Deane E. Cover
A Prototype Overview For Allocating Usaid Foreign Aid, Deane E. Cover
Theses and Dissertations
The United States Agency for International Development (USAID) is the federal government agency primarily responsible for administering civilian foreign aid. In fiscal year 2011, USAID spent approximately $15 billion in an effort to assist countries recovering from disaster, trying to escape poverty, and engaging in democratic reforms. Using Value-Focused Thinking, regression, and optimization techniques, this thesis utilizes overarching USAID objectives and underlying policy to develop a prototype overview model that is used to provide insight to a Decision Maker regarding how changes in funding allocation can lead to improved impact.
A Decision Analysis Perspective On Multiple Response Robust Optimization, Jonathan S. Findley
A Decision Analysis Perspective On Multiple Response Robust Optimization, Jonathan S. Findley
Theses and Dissertations
Decisions in which multiple objectives must be optimized simultaneously occur frequently in government, military, and industrial settings. One method a decision maker may use to assist in such decisions is the application of a desirability function. An informed specification of the desirability function's parameters is essential to accurately describe the decision maker's value trade-offs and risk preference. This thesis uses utility transversality to analyze the implicit trade-off and risk attitude assumptions attendant to the desirability function. The desirability function does not explicitly account for response variability. A robust solution takes not only the expected response into account, but also its …
A Simulation To Evaluate Joint Military Logistics In A Humanitarian Assistance Environment, Ryan S. Fisher
A Simulation To Evaluate Joint Military Logistics In A Humanitarian Assistance Environment, Ryan S. Fisher
Theses and Dissertations
Currently, no capability exists to cost-effectively simulate and measure a Joint Task Force-Port Opening (JTF-PO) operation to predict cargo throughput based on the availability of resources. The purpose of this research is to create a decision model using Arena® simulation software to provide United States Transportation Command (USTRANSCOM) decision makers the ability to predict cargo throughput in a Humanitarian Assistance/Disaster Response (HA/DR) scenario. The data used in this simulation were taken from the JTF-PO involvement in Operation UNIFIED RESPONSE, Port-au-Prince, Haiti 2010. The research uses a design of experiments approach to statistically plan and measure the throughput of cargo based …
Fdtd Simulation Of Novel Polarimetric And Directional Refelectance And Transmittance Measurements From Optical Nano- And Micro-Structured Materials, Spencer R. Sellers
Fdtd Simulation Of Novel Polarimetric And Directional Refelectance And Transmittance Measurements From Optical Nano- And Micro-Structured Materials, Spencer R. Sellers
Theses and Dissertations
The basic physics of nano-/micro-structured materials must be categorized through measurements and simulation to fully understand their scatter dependence on polarization and angle on incidence before they can be considered for war fighter applications. The off-normal incidence and polarization dependant scatter for a guided-mode resonance filter (GMRF) and a surface plasmonic polariton (SPP) extraordinary transmission filter is measured. The measurements are compared to finite-difference time domain (FDTD) simulations. The GMRF is found to exhibit extraordinary angular scatter at the resonant coupled modes. An approximation is developed to predict the dependence of these modes on wavelength, incident angle and polarization. For …
Analysis Of Social Network Measures With Respect To Structural Properties Of Networks, Joshua D. Guzman
Analysis Of Social Network Measures With Respect To Structural Properties Of Networks, Joshua D. Guzman
Theses and Dissertations
Social Network Analysis (SNA), the study of social interactions within a group, spans many different fields of study, ranging from psychology to biology to information sciences. Over the past half century, many analysts outside of the social science field have taken SNA concepts and theories and have applied them to an array of networks in the hope of formulating mathematical descriptions of the relations within the network of interest. More than 50 measures of networks have been identified across these fields; however, little research has examined the findings of these measures for possible relationships. This thesis tests a set of …
Tanker Fuel Consolidation: Effects Of Higher Fidelity Modeling On A Resilient Plan, Jason A. Larimore
Tanker Fuel Consolidation: Effects Of Higher Fidelity Modeling On A Resilient Plan, Jason A. Larimore
Theses and Dissertations
The U.S. Air Force (USAF) has selected the KC-46 to begin replacing the aged KC-135 fleet. One of the major differences between the KC-46 and the KC-135 is the KC-46's ability to be refueled. This allows for tanker fuel consolidation, or the refueling of one tanker by another. The effects of this capability on the efficiency of tanker operations must be quantified and included in determining an appropriate substitution ratio between the two aircraft. This ratio will be used to plan the retirement of KC-135s as the KC-46 enters operational fielding. This study utilizes simulation to determine the efficiencies gained …
Understanding The Instruments Of National Power Through A System Of Differential Equations In A Counterinsurgency, Cade M. Saie
Understanding The Instruments Of National Power Through A System Of Differential Equations In A Counterinsurgency, Cade M. Saie
Theses and Dissertations
Models that account for the progression of nation-building and the impacts of the instruments of national power -- Diplomacy, Informational, Military, and Economic effects -- are rare. This research proposes the development of such a model. Through the derivation of state indices for the operational variables of Political, Military, Economic, Social, Infrastructure, and Information, a functional form of a system of differential equations is developed to account for the interactions between the state indices and instruments of national power. This methodology is a mean-field inverse problem which solves for the coefficients of the differential equations in a data-driven manner. Publicly …
Impact Of Decision Criteria On Federal Aviation Administration Certification Of Military Commercial Derivative Aircraft, Michael S. Low
Impact Of Decision Criteria On Federal Aviation Administration Certification Of Military Commercial Derivative Aircraft, Michael S. Low
Theses and Dissertations
The decision regarding whether to maintain Federal Aviation Administration certification of military commercial derivative aircraft (MCDA) can be extremely difficult due to the subjective nature of some of the associated costs and benefits. The purpose of this research is to help decision makers understand the level of impact those costs and benefits have on their decision, and how that impact may change over the life cycle of the MCDA fleet. Data regarding the various criteria involved in such decisions were collected from subject matter experts using the Delphi technique. This information was then incorporated into a decision support tool that …
Using Hybrid Simulation/Analytical Queueing Networks To Capacitate Usaf Air Mobility Command Passenger Terminals, Meredithe A. Jessup Ii
Using Hybrid Simulation/Analytical Queueing Networks To Capacitate Usaf Air Mobility Command Passenger Terminals, Meredithe A. Jessup Ii
Theses and Dissertations
The objective of this study is to model operations at an airport passenger terminal to determine the optimal service capacities at each station given estimated passenger flow patterns and service rates. The central formulation is an open Jackson queueing network that can be applied to any USAF Air Mobility Command (AMC) terminal regardless of passenger type mix and flow data. A complete methodology for analyzing passenger flows and queue performance of a single flight is produced and then embedded in a framework to analyze the same for multiple departing flights. Queueing network analysis (QNA) is used because no special software …
Minuteman Iii Cost Per Alert Hour Analysis, Allen R. Miller
Minuteman Iii Cost Per Alert Hour Analysis, Allen R. Miller
Theses and Dissertations
This thesis analyzes the cost associated with the Minuteman III (MM III) weapon system. The research develops three models for determining MM III costs per alert hour (CPAH). The first model is based on the Air Force Cost Analysis Improvement Group cost per flying hour model. The model is modified to include depot level reparables, consumables, and personnel costs. The second model is based on the Office of the Secretary of Defense, Cost Analysis Improvement Group cost per flying hour model and is formulated using service-wide data from the Air Force Total Ownership Cost tool. The third model is a …
Evaluation Of Inventory Reduction Strategies: Balad Air Base Case Study, Aaron V. Glassburner
Evaluation Of Inventory Reduction Strategies: Balad Air Base Case Study, Aaron V. Glassburner
Theses and Dissertations
The end of military operations in Iraq brought a new set of challenges for Air Force supply professionals as they responsibly reduced levels of assets within the country while supporting on-going missions. This research evaluates two separate supply reduction plans that were implemented at Balad Air Base during the Air Force's final months in the area of operations. The logic of Air Force consumable inventory computations are modeled in detail and historical data from supply records are utilized to evaluate each plan's supportability to different notional fleet sizes. Each plan is evaluated under measures of backorders, backorder quantities, and customer …
Forecasting Effects Of Influence Operations: A Generative Social Science Methodology, Christopher W. Weimer
Forecasting Effects Of Influence Operations: A Generative Social Science Methodology, Christopher W. Weimer
Theses and Dissertations
Simulation enables analysis of social systems that would be difficult or unethical to experiment upon directly. Agent-based models have been used successfully in the field of generative social science to discover parsimonious sets of factors that generate social behavior. This methodology provides an avenue to explore the spread of anti-government sentiment in populations and to compare the effects of potential Military Information Support Operations (MISO) actions. This research develops an agent-based model to investigate factors that affect the growth of rebel uprisings in a notional population. It adds to the civil violence model developed by Epstein (2006) by enabling communication …
Using Multiattribute Utility Copulas In Support Of Uav Search And Destroy Operations, Beau A. Nunnally
Using Multiattribute Utility Copulas In Support Of Uav Search And Destroy Operations, Beau A. Nunnally
Theses and Dissertations
The multiattribute utility copula is an emerging form of utility function used by decision analysts to study decisions with dependent attributes. Failure to properly address attribute dependence may cause errors in selecting the optimal policy. This research examines two scenarios of interest to the modern warfighter. The first scenario employs a utility copula to determine the type, quantity, and altitude of UAVs to be sent to strike a stationary target. The second scenario employs a utility copula to examine the impact of attribute dependence on the optimal routing of UAVs in a contested operational environment when performing a search and …
Cng As A Feasible Replacement For The U.S. Transportation Sector, Veysel Uz
Cng As A Feasible Replacement For The U.S. Transportation Sector, Veysel Uz
Theses and Dissertations
For many years there has been much attention on reducing U.S. fuel imports to improve the nation's energy independence. Much of the focus has been on the transportation sector, as it accounts for 28% of total U.S. energy consumption. This thesis examines compressed natural gas (CNG) as a possible alternative fuel for the U.S. transportation sector. To fully explore this possibility, it is essential to understand both the supply and demand sides of the problem. This research examines the availability and adequacy of CNG as a full or partial fuel replacement for U.S. transportation fuels, the factors that prevent CNG …
Examining Express With Simulation, David R. Williams
Examining Express With Simulation, David R. Williams
Theses and Dissertations
The Execution and Prioritization of Repair Support System (EXPRESS) is a database tool used by the Air Force to prioritize depot maintenance of reparable spare parts to maximize responsiveness to warfighter need. Many studies have examined individual portions of EXPRESS, though few have examined it as an entire system. This effort proposes a modeling approach for examining the overall system behavior of EXPRESS using discrete event simulation. The emphasis of the model is to be flexible enough to provide useful insight into system performance, while also remaining open-ended enough to provide a foundation for future expansion and analysis. A case …
The Strategic Level Optimization Of Air To Ground Missiles For Turkish Air Force Decision Support System, Nurdinc Senay
The Strategic Level Optimization Of Air To Ground Missiles For Turkish Air Force Decision Support System, Nurdinc Senay
Theses and Dissertations
Inventory Management is one of the most important elements in military systems, especially if it is an ammunition inventory. To determine the optimum types and levels of ammunition a military needs, the probable needs of each type have to be calculated in peace time. Although the Turkish Air Force has Strategic Plans that show detailed potential war scenarios, there are many different ways to accomplish a war mission depending on the type of ammunition that is used. In this research, the need for air-to-ground missiles is calculated using a Weapon-Target Assignment algorithm with cost minimization, bomb usage minimization, and effect …
Value Focused Thinking For Nation Building In Afghanistan: A Regional Perspective, Muhammad S. Riaz
Value Focused Thinking For Nation Building In Afghanistan: A Regional Perspective, Muhammad S. Riaz
Theses and Dissertations
This thesis is an effort to mathematically model the nation building effort that is underway in Afghanistan. The thesis examines this nation building effort from the perspective of a local person who understands Afghan culture better than a foreigner. The thesis employs value-focused thinking to categorize the factors that we need to focus on for nation building in descending order of priority. This research adds a new dimension to the models already available in the literature and is likely to be more readily embraced by the local people who are sometimes in conflict with American priorities.
A Spreadsheet Model That Estimates The Impact Of Reduced Distribution Time On Inventory Investment Savings: What Is A Day Taken Out Of The Pipeline Worth In Inventory?, Serhat Saylam
Theses and Dissertations
In most of the literature dealing with inventory problems, either with a deterministic or probabilistic model, lead time is viewed as a prescribed constant or a stochastic variable that is not subject to control. But in many practical situations, lead time can be reduced by an extra crashing cost; in other words, it is controllable. This study proposes a repeatable spreadsheet optimization model that estimates the impact of reduced replenishment lead time on inventory investment savings at forward and strategic locations to motivate decision makers to support enterprise-wide distribution process improvement. The study provides users with a means of automatically …
C-5m Super Galaxy Utilization With Joint Precision Airdrop System, Michael T. Weitz
C-5m Super Galaxy Utilization With Joint Precision Airdrop System, Michael T. Weitz
Theses and Dissertations
The purpose of this research was to determine the viability of utilizing the Joint Precision Airdrop System with the C-5M Super Galaxy weapon system. Specifically, this thesis sought research the ability of the C-5M to use the Joint Precision Airdrop System and to answer four main research questions addressing a cost benefit analysis between the C-5M Super Galaxy and the C-17 Globemaster III. The research questions were answered through a comprehensive literature review and the creation of a model that determined the cost associated with specific range versus payload mission types. The payloads used ranged from 25 short tons, to …
Probabilistic Model For Laser Damage To The Human Retina, David A. Wooddell Jr.
Probabilistic Model For Laser Damage To The Human Retina, David A. Wooddell Jr.
Theses and Dissertations
Understanding how lasers interact with media during propagation is a premiere field of physics. The subject area known as laser bioeffects explores laser interactions with biological cells, tissues, organs, and bodies. This research includes laser applications used in medicine, establishes safe exposure limits for industry and academia, and generally studies the many effects of laser light on living creatures. The bioeffects community relies heavily on deterministic modeling and simulation tools to support experimental research into damage thresholds and laser effects. However, recent laser applications require a probabilistic approach to support risk management and analyses methodologies. Some probabilistic models exist, but …
Mitigating Diminishing Manufacturing Sources/Material Shortages (Dms/Ms) And Obsolescence For The T-6 Canopy Fracturing Initiation System (Cfis), Richard P. Carrano
Mitigating Diminishing Manufacturing Sources/Material Shortages (Dms/Ms) And Obsolescence For The T-6 Canopy Fracturing Initiation System (Cfis), Richard P. Carrano
Theses and Dissertations
The Joint Primary Aircraft Training System (JPATS) lost the supplier for its canopy fracturing initiation system (CFIS) with no prospect for a replacement. This forced a complete CFIS redesign to supply both an active production line and sustain fielded aircraft. Compounding the problem, the existing CFIS became obsolete, which forced an interim design to be produced until a final long term solution was fielded. This thesis developed a method to optimize the redesign by determining the lowest cost path for both fielding the interim design and phasing in the final retrofit. Using the Excel Solver® modeling program, an optimal rate …
Incorporating Externalities And Uncertainty Into Life-Cycle Cost Analysis, Alec C. Danaher
Incorporating Externalities And Uncertainty Into Life-Cycle Cost Analysis, Alec C. Danaher
Theses and Dissertations
Executive Order 13514 requires federal agencies to consider economic and social benefits and costs when evaluating projects and activities based on life-cycle return on investment. The generation of energy used by federal facilities imposes social externalities, most notably air pollution, upon society. This research utilized the social costs of carbon dioxide, oxides of nitrogen, and sulfur dioxide to develop a probabilistic life-cycle full-cost analysis tool for the analysis of energy efficiency projects. The tool was then used to investigate the effects of incorporating social externalities and uncertainty into life-cycle cost analyses of energy efficiency projects. Calculation of the social benefits …
Comparative Analysis Of Two Biological Warfare Air Samplers Using Live Surrogate Agents, James C. Enderby
Comparative Analysis Of Two Biological Warfare Air Samplers Using Live Surrogate Agents, James C. Enderby
Theses and Dissertations
The United States Air Force has several high-volume biological air samplers, including the XMX/2L-MIL and the Biocapture 650. Limited information is available on either in terms of its collection of viruses and bacteria. However, previous research on the XMX/2L-MIL has determined that modifications to the secondary flow rate and the use of a virus preserving collection media may provide improved virus collection rates. In this thesis, these modifications were investigated to determine their impact on the collection of viral and bacterial aerosols. Additionally, relative collection rates were compared against those for the Biocapture 650. MS2 bacteriophage was the viral surrogate …