Browsing OU - Theses by Author "Yeary, Mark"
Now showing items 1-14 of 14
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Analysis of the Nyquist Folding Receiver (NYFR)
Martin, James Camden (2018)Increased utilization of the radio frequency spectrum motivates receivers with wide instantaneous bandwidth for applications such as signals intelligence, cognitive radio, and compliance testing. Traditional wideband ... -
Automation of Advanced Scanners for RF Metrology
Brachtenbach, Tom (2020-05-08)The characterization of the constitutive properties of materials is an important step in the development of modern RF devices, especially at mm-wave frequencies or in systems that incorporate materials whose performance ... -
DESIGN AND IMPLEMENTATION OF AN ALL-COTS DIGITAL BACK-END FOR A PULSE-DOPPLER SYNTHETIC APERTURE RADAR
Kenney, Russell (2020-05-08)Radar imaging techniques employing synthetic aperture radar (SAR) are ubiquitous in applications such as defense, remote sensing, space exploration, terrain mapping, and many others. However, to obtain fine image resolution, ... -
Digital predistortion of wideband radar waveforms
Summers, Randall (2021-12-17)As demands for increased radio frequency system performance have grown over time, sufficiently mitigating the distortion introduced by high power amplifiers has proven to be a major challenge to overcome. Digital predistortion ... -
Digital Radar Implementation With System Response Compensation Through Amplitude Predistortion
Sun, Brian (2016-12-16)Radars traditionally synthesize waveforms by using a variety of analog electronics. These analog components are collectively referred to as the analog chain. A typical electronic analog chain contains multiple components, ... -
Digital radar receiver design based on highly efficient bandpass sampling FPGA architecture
Meier, John (2009)As digital electronics become faster and more efficient, it becomes possible to move the analog/digital interface in a radar downconversion system further towards the antenna. Instead of digitizing radar echoes at the end ... -
Examining Meteorological Benefits of Rapid-Scan, Dual-Polarization, All-Digital Phased Array Radar Observations for Detecting Tornado Formation and Intensification
Cohen, Brandon (2022-08-04)Phased array radar (PAR) is widely considered the future for a replacement to the current operational radar network, NEXRAD. In particular, an all-digital operational PAR network offers a range of benefits including adaptive ... -
Interference Mitigation using Reconfigurable RF Components
Brown, Ryan (2017)The need for efficient spectrum management continues to grow as the number of users of wireless technologies continues to increase. Solutions to this problem include cognitive radio systems, which aim to adaptively ... -
A Least Mean-Square Approach to Nonlinear Equalization of Digital Receivers
Peccarelli, Nicholas (2018-05-11)With an increased demand for fully-digital arrays for radar and communications systems by making use of low-cost components with relaxed linearity requirements, nonlinear equalization (NLEQ) is needed to increase ... -
Methods for Control, Calibration, and Performance Optimization of Phased Array Systems
Herndon, Matthew (2022-05-13)Phased array radar systems have proven advantageous in a variety of research applications, offering faster volume scans and unparalleled time-resolution as compared to traditional parabolic dish antenna systems that rely ... -
MULTIPLE HYPOTHESIS TRACKING AND STRONG POINT ANALYSIS FOR STORM TRACKING WITH WEATHER RADAR
Judy, Matthew (2020-05-08)Storm tracking using radar observations of weather is a valuable tool both for the study of weather conditions and for the issuance of advance warning when such conditions are severe. Centroid-based storm tracking algorithms ... -
A Novel Method for the Characterization of Anisotropic Materials
Stringer, Alexander (2018-12-14)This thesis details the successful conceptualization, development, and proof of concept testing of a novel system for the characterization of a material's electromagnetic properties. In particular, the proposed system was ... -
Simulation and Adaptive Aperture Allocation for All-Digital Phased-Array Radar
Recknagel, Corban (2019-08-01)Increased flexibility afforded by all-digital radar architectures and operational concepts such as MIMO radar can be leveraged with new waveforms and aperture allocation methods to improve radar performance in diverse ... -
Simulation of Polarimetric Phased Array Weather Radars
Byrd, Andrew (2016-05)Polarimetric phased array radars (PPARs) are a rapidly developing area of research interest in weather radar. However, they present intrinsic challenges for calibration and operation. Foremost among these are the adverse ...