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LOW-COST, SOFTWARE DEFINED FMCW RADAR FOR OBSERVATIONS OF DRONES
(2017-05-12)
This thesis focuses on implementing a small, low-cost, Frequency-Modulated-Continuous-Wave (FMCW) radar sensor using Software-Defined Radio (SDR) platforms. Extensive investigation and comparisons of existing SDRs are ...
Investigation of Antenna Edge Treatments and Ground Plane Coupling Behavior
(2016-12-16)
Guided wave structures can perform as broadband antenna elements through the use of a gradual impedance transformation. The impedance match is typically created through gradual structural changes to match the impedance of ...
Nonlinear Amplifier Amplitude Modulation Distortion Mitigation Techniques
(2022-05-13)
High peak-to-average power ratio (PAPR) waveforms present a challenge to
radar systems in which high power amplifiers operate in saturation to increase
power efficiency. Previous works have demonstrated a marked reduction ...
Simulation of Polarimetric Phased Array Weather Radars
(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 ...
Investigation of Low-Power Antenna Reconfiguration Through Biasing of Magnetic Loads
(2017-05-12)
In modern RF systems, tunable devices are increasingly necessary to provide agility in crowded spectral environments. The antenna, as an integral part of any wireless system, must be capable of operating well at multiple ...
A New Front-End System For UAV-Based Antenna Measurements For Polarimetric Weather Radars
(2023-08-04)
Radar system calibration is vital for ensuring optimal performance, especially in weather radars that have stringent requirements for co-polarization mismatch. In-field calibration is essential, particularly for mobile ...
Ruggedized Feeding Techniques for Placement Insensitive Antennas
(2018-08-02)
Today's warfighter relies on extensive wireless technology to stay connected to allied forces and the battle theater. Communication equipment, IFF (identification friend-or-foe) identifiers, global positioning systems, ...
DETECTABILITY ASSESSMENT OF THE HIGH-ENERGY X-RAY IN-LINE PHASE CONTRAST PROTOTYPE FOR DENSE BREASTS
(2018-12-14)
The primary objective of the research in this thesis is to evaluate the performance of the high-energy in-line phase contrast prototype with the conventional mammography along with ultrasound systems in the detection of ...
Predictive Tracking Simulation and Techniques for All-digital Radar
(2021-08-05)
All-digital radar architectures allow radar systems to operate with more flexibility. Multiple Input, Multiple Output (MIMO) radars are especially effective at identifying multiple targets. Combined with statistical ...
Simulation and Adaptive Aperture Allocation for All-Digital Phased-Array Radar
(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 ...