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Coupling-based wideband digital phased array calibration techniques
Recently, interest in phased array radars for diverse applications has been rising because of their versatility and recent efforts to reduce their cost. All phased array radars require some form of calibration to periodically ...
Creeping Wave Propagation On Cylindrical Radiating Structures
(2019-08-01)
Weather radar is a powerful tool for detecting hazardous weather that may impact
the lives of many. Most weather radars used by meteorologists today rely on a
mechanical sweep to obtain volumetric data. This mechanical ...
Improving Drop Size Distribution Retrieval and Rain Estimation from Polarimetric Radar Data using the Deep Neural Network
(2022-08)
Drop size distribution (DSD) and rain rate (R) have been estimated from polarimetric radar data are now available nationwide. DSD and R are essential in understanding rain microphysics. Past studies utilized parametrized ...
A fuzzy logic algorithm for classifying bird and insect radar echoes at S-band
(2018-08-02)
A fuzzy logic algorithm for the separation of bird echoes from insect echoes using Next Generation Radar (NEXRAD) and considering range effects has been developed. The radar used in this study is the S-band (10 cm wavelength) ...
A Study Of The Electrical, Microphysical, And Kinematic Properties Of The 29 May 2012 Kingfisher Supercell
(2014)
A supercell thunderstorm formed as part of a cluster of severe storms near Kingfisher, OK on 29 May 2012 during the Deep Convective Clouds & Chemistry (DC3) experiment. This storm produced 5” hail, an EF-1 tornado, and ...
Multi-Radar Analysis of the 20 May 2013 Moore, Oklahoma Supercell through Tornadogenesis and Intensification
(2019-12-13)
On 20 May 2013, a violent, long-track EF-5 tornado impacted Moore, Oklahoma and surrounding areas, occurring within a network of radars operating in close proximity to the supercell. This network of radars consisted of ...
Doppler Radar Analyses of Tornadic Supercells on 19 May 2013
(2016-05-13)
On 19 May 2013, two supercells moved through central Oklahoma and produced seven tornadoes, including one of EF-3 and one of EF-4 intensity. High temporal and spatial resolution observations were collected in both strong ...
UAV-Based In Situ Antenna Characterization: Analysis and Design Requirements
(2018-05-11)
This thesis proposes to characterize antennas in situ with Unmanned Aerial Vehicles (UAVs), especially within the framework of weather radar and 5th generation wireless systems (5G) antennas. Specifically, it is concerned ...
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 ...
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 ...