Browsing OU - Theses by Author "Zhang, Yan"
Now showing items 1-9 of 9
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All-Weather Sense and Avoid (SAA) Radar Clutter Modeling and Control
Gilliam, Matthew (2020-12-18)The background of this thesis is related to the enhancement and optimization of the Pulsed-Doppler Radar sensor for the need of Detect and Avoid (DAA), or Sense and Avoid (SAA), for both weather and air-traffic (collision ... -
The Development of a Smart and Low Power Consumption Variable Speed Limit Sign for the Oklahoma Department of Transportation
Moreno Marin, Marcelo Franz (2024-05-10)Variable Speed Limit Signs (VSLSs) play a crucial role in traffic management. Various studies have demonstrated that they can significantly reduce accidents and improve traffic flow, particularly on congested highways, ... -
Effectiveness of Electronic Counter Measures (ECM) on Small Unmanned Aerial Systems (SUAS): Analysis and Preliminary Tests
Thumann, Charles (2018-05)Small unmanned aerial systems (sUAS) have become more common and affordable for government, commercial, and private use. There are several counter sUAS products that employ electromagnetic counter measures to disrupt the ... -
LOW-COST, SOFTWARE DEFINED FMCW RADAR FOR OBSERVATIONS OF DRONES
ZHU, JIAXI (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 ... -
A New Front-End System For UAV-Based Antenna Measurements For Polarimetric Weather Radars
Burdi, Khuda (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 ... -
A Real Time Ground Based Augmentation System Implemented with LabVIEW Software
Milligan, David (2022-12-16)This thesis develops and implements a real time Ground Based Augmentation System (GBAS) in the LabVIEW environment incorporating the Local Monitor (LM) from the Closed-Loop GBAS (CL-GBAS) concept. GBAS, also referred to ... -
A SIMPLE EM DIPOLE RADIATING ELEMENT FOR DUAL-POLARIZED PHASED ARRAY WEATHER RADARS
Mirza, Ridhwan Khalid (2016-05-13)The Dual Polarized radiating element is a critical component in the Multi-function Phased Array Radar (MPAR) System. This thesis studies a new type of dual polarized radiating element based on the Electro-Magnetic (EM) ... -
Three-Dimensional Anti-Jamming Array Processing for GNSS-Based Navigational Aid Inspection
Wolfley, Olivia (2023-05-12)Global Navigational Satellite System (GNSS) Radio Frequency (RF) links are susceptible to interference. In signal compromised environments, the capability to combat RF interference (such as jamming) is necessary. Techniques ... -
Using Inexpensive Software-Defined Radios as GPS Receivers in a Ground-Based Augmentation System
Taylor, Jaxon (2022-12-16)Ground Based Augmentation Systems (GBAS) are used to augment Global Positioning Systems (GPS) signals to make the position solutions significantly more accurate and precise. The systems have been studied and demonstrated ...