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Now showing items 31-39 of 39
Exploring Tornado Debris Signature Hypotheses Using Radar Simulations and Large-Eddy Simulations
(2021)
Tornadoes can loft various types and sizes of debris, sometimes resulting in a polarimetric radar signature called the TDS (Tornado Debris Signature). The presence of a TDS in the radar data can help confirm the occurrence ...
DESIGN AND IMPLEMENTATION OF AN ALL-COTS DIGITAL BACK-END FOR A PULSE-DOPPLER SYNTHETIC APERTURE RADAR
(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, ...
Multistatic Passive Weather Radar
(2020-05-08)
Practical and accurate estimation of three-dimensional wind fields is an ongoing challenge in radar meteorology. Multistatic (single transmitter / multiple receivers) radar architectures offer a cost effective solution for ...
The Intersection of Radar and Communications: A Study on Spectrum Management for Addressing RF Interference
(2023-05-12)
The radio frequency (RF) spectrum is a fruitful yet competitive frontier that enables technologies like 5G, Wi-Fi, Bluetooth, GPS, long-range telescopes, microwave ovens, radar, and more. With finite supply and increasing ...
Quantifying and Mitigating Debris-Induced Bias in Radar Measurements of Tornadic Winds
(2021)
The centrifuging of lofted tornadic debris is known to cause bias in Doppler radar measurements of tornado wind speeds. Debris presence in a radar volume is associated with anomalous radial divergence, underestimation of ...
An Investigation Between Tornadic and Non-Tornadic QLCS Mesovortices using Operational and Experimental MRMS Products
(2023-08-04)
Quasi-linear convective system (QLCS) tornadoes have become an active area of research over the last several years. Through numerical simulations, it is theorized that QLCS vortex formation occurs near the surface in a ...
Digital predistortion of wideband radar waveforms
(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 ...
Signal Processing Techniques for Radar Operation in Congested Spectrum
(2024-08-01)
The electromagnetic spectrum is a finite resource that has become increasingly congested as the use of wireless communications and RF applications have expanded. With increased congestion, dynamic spectrum sensing and ...
FIRST PRINCIPLES MACHINE LEARNING IN RADAR: AUGMENTING SIGNAL PROCESSING TECHNIQUES WITH MACHINE LEARNING FOR DETECTION, TRACKING, AND NAVIGATION
(2024-08-01)
Machine learning (ML) provides a set of tools for learning approximate system models from data. It has the potential to improve classic radar signal processing (RSP) algorithms by allowing them to maintain performance when ...