@proceedings {862, title = {Incorporating HamSCI Project into a College Physics Course}, year = {2024}, month = {03/2024}, publisher = {HamSCI}, address = {Cleveland, OH}, abstract = {

We report citizen science activity in a physics course to engage undergraduate students in a HamSCI Personal Space Weather Station (PSWS) project. The New Jersey Institute of Technology (NJIT) Physics Department has been offering a senior-level lab course, "Advanced Physics Lab" in which the students are expected to gain experience with experimental techniques, instrumentation, theoretical and applied electronics, solid state electronic devices, experiments in modern physics by performing quantitative measurements of fundamental physical parameters. Students perform lab experiments in a mostly unstructured setting, in which students are given the equipment and related manuals and perform experiments with very minimal instructor{\textquoteright}s supervision. Historically, the students have been given a pre-set lab equipment by following the manuals accompanied by the equipment. While this may be suitable for providing an opportunity for the students to relate the results in the lab with the known physics theories/principles, the impact to the students is limited as there is still insufficient "hands-on" components and demonstration of real-world applications. The HamSCI PSWS project is a good example in which students build and test science instruments and use them for scientific investigations to address this issue. We present undergraduate class activity and evaluate their impact on future workforce training utilizing the HamSCI resources.\ 

}, author = {Hyomin Kim and Lindsay Goodwin and Gareth Perry and Nathaniel A. Frissell and Gary Mikitin} } @proceedings {479, title = {e-POP RRI observations of the April 24, 2020 ARRL Frequency Measuring Test}, year = {2021}, month = {03/2021}, publisher = {HamSCI}, address = {Scranton, PA (Virtual)}, abstract = {

One of the science objectives of the Radio Receiver Instrument (RRI) on the CAScade, Smallsat, and Ionospheric Polar Explorer/enhanced Polar Outflow Probe (CASSIOPE/e-POP) satellite is to study ionospheric influences on high frequency (HF) radio wave from low Earth orbit. RRI is made-up of 4, 3-m monopoles which can be electronically arranged into a crossed-dipole configuration.\  On April 24, 2020, RRI tuned to measure the ARRL frequency measuring test (FMT) on 40 m, and successfully recorded part of the {\textquotedblleft}call up{\textquotedblright} and all of the {\textquotedblleft}key down{\textquotedblright} segments of the test.\  The FMT provides a unique chance to study the effects of the ionospheric plasma on stable and reliable radio signals at frequencies that are close to the ionosphere{\textquoteright}s critical frequency, a frequency regime in which the influence of the ionospheric plasma on radio wave propagation conditions is most pronounced.\  In this presentation, we give preliminary results of our analysis of RRI{\textquoteright}s FMT measurements which include an examination of the FMT{\textquoteright}s Doppler characteristics, and the identification tell-tale signatures of ionospheric effects on the transmitted signal such as Faraday rotation and propagation mode delay.

}, url = {https://hamsci2021-uscranton.ipostersessions.com/?s=34-2B-1B-32-C8-FC-4A-0B-5B-51-B9-1D-10-4E-F2-7F}, author = {Brian O{\textquoteright}Donnell and Gareth Perry} } @conference {550, title = {HamSCI Campaign Co-Design (Panel Discussion)}, booktitle = {HamSCI Workshop 2021}, year = {2021}, month = {03/2021}, publisher = {HamSCI}, organization = {HamSCI}, address = {Virtual}, author = {Kristina V. Collins and Nathaniel A. Frissell and Philip J. Erickson and Laura Brandt and Elizabeth MacDonald and Michael Black and Gareth Perry} } @conference {539, title = {HF Doppler Observations of Traveling Ionospheric Disturbances in a WWV Signal Received with a Network of Low-Cost HamSCI Personal Space Weather Stations}, booktitle = {NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions)}, year = {2021}, month = {06/2021}, publisher = {CEDAR}, organization = {CEDAR}, address = {Virtual}, abstract = {

Traveling Ionospheric Disturbances (TIDs) are quasi-periodic variations in ionospheric electron density that are often associated with atmospheric gravity waves. TIDs cause amplitude and frequency variations in high frequency (HF, 3-30 MHz) refracted radio waves. We present observations of TIDs made with a network of Ham Radio Science Citizen Investigation (HamSCI) Low-Cost Personal Space Weather Stations (PSWS) with nodes located in Pennsylvania, New Jersey, and Ohio. The TIDs were detected in the Doppler shifted carrier of the received signal from the 10 MHz WWV frequency and time standard station in Fort Collins, CO. Using a lagged cross correlation analysis, we demonstrate a method for determining TID wavelength, direction, and period using the collected WWV HF Doppler shifted data.

}, author = {Veronica I. Romanek and Nathaniel A. Frissell and Dev Joshi and William Liles and Clair Trop and Kristina Collins and Gareth Perry} } @conference {399, title = {Novel methods for characterizing ionospheric irregularities in the high-latitude ionosphere (ePoster)}, booktitle = {HamSCI Workshop 2020}, year = {2020}, month = {03/2020}, publisher = {HamSCI}, organization = {HamSCI}, address = {Scranton, PA}, abstract = {

Plasma structuring in the high-latitude ionosphere impacts over-the-horizon radio communication and global navigation systems, and is an important space weather effect. Therefore, characterizing the formation and evolution of these structures is critically important. It is useful to create {\textquoteleft}{\textquoteleft}irregularity spectra", which quantify the sizes of plasma structures in the high-latitude ionosphere.\ \ The shape of the spectra (and other characteristics) can provide insight into the source of the irregularities. From this information it is then possible to forecast the occurrence of irregularities and predict their impact on radio wave propagation and communications. We are able to compute irregularity spectra by leveraging the phased array design of several incoherent scatter radars (ISRs), and using some unique properties of the F-region plasma at high-latitudes.\ \ In this presentation we will describe how we develop and apply a novel technique for ISR measurements to resolve high-latitude ionospheric irregularity spectra at a finer resolution than has been previously possible with ground-based instruments. We will motivate the newly developed ISR technique, describe its methodology, and provide some first results demonstrating its effectiveness. This technique will enable future studies that will directly link high-latitude ionospheric plasma structure drivers to their impact on radio wave communications.

}, author = {Lindsay V. Goodwin and Gareth Perry} } @conference {51, title = {e-POP Radio Science Using Amateur Radio Transmissions}, booktitle = {Fall AGU - Poster Presentation}, year = {2015}, month = {12/2015}, publisher = {American Geophysical Union}, organization = {American Geophysical Union}, address = {San Francisco, CA}, abstract = {

A major component of the enhanced Polar Outflow Probe (e-POP) Radio Receiver Instrument (RRI) mission is to utilize artificially generated radio emissions to study High Frequency (HF) radio wave propagation in the ionosphere. In the North American and European sectors, communications between amateur radio operators are a persistent and abundant source source of HF transmissions. We present the results of HF radio wave propagation experiments using amateur radio transmissions as an HF source for e-POP RRI. We detail how a distributed and autonomously operated amateur radio network can be leveraged to study HF radio wave propagation as well as the structuring and dynamics of the ionosphere over a large geographic region. In one case, the sudden disappearance of nearly two-dozen amateur radio HF sources located in the midwestern United States was used to detect a enhancement in foF2 in that same region. We compare our results to those from other more conventional radio instruments and models of the ionosphere to demonstrate the scientific merit of incorporating amateur radio networks for radio science at HF.

}, author = {Nathaniel A. Frissell and Gareth Perry and Ethan S. Miller and Alex Shovkoplyas and Magdalina Moses and H. James and Andrew Yau} }