TY - CONF T1 - HamSCI Personal Space Weather: Architecture and Applications to Radio Astronomy T2 - Annual (Summer) Eastern Conference Y1 - 2021 A1 - Nathaniel A. Frissell A1 - Scott H. Cowling A1 - Thomas C. McDermott A1 - John Ackermann A1 - David Typinski A1 - William D. Engelke A1 - David R. Larsen A1 - David G. McGaw A1 - Hyomin Kim A1 - David M. Witten, II A1 - Julius M. Madey A1 - Kristina V. Collins A1 - John C. Gibbons A1 - David Kazdan A1 - Aidan Montare A1 - Dev Raj Joshi A1 - Veronica I. Romanek A1 - Cuong D. Nguyen A1 - Stephen A. Cerwin A1 - William Liles A1 - Jonathan D. Rizzo A1 - Ethan S. Miller A1 - Juha Vierinen A1 - Philip J. Erickson A1 - Mary Lou West AB -

The Ham Radio Science Citizen Investigation (HamSCI) Personal Space Weather Station (PSWS) project is a citizen science initiative to develop a new modular set of ground-based instrumentation for the purpose of studying the structure and dynamics of the terrestrial ionosphere, as well as the larger, coupled geospace system. PSWS system instrumentation includes radio receivers sensitive to frequencies ranging from the very low frequency (VLF) through very high frequency (VHF) bands, a Global Navigation Satellite System (GNSS) receiver to provide Total Electron Content (TEC) measurements and serve as a precision time and frequency reference, and a ground magnetometer sensitive to ionospheric and geospace currents. Although the PSWS is designed primarily for space weather and space science, its modular and open design in both hardware and software allows for a variety of use cases. The core radio instrument of the PSWS, the TangerineSDR, is a wideband, direct sampling 100~kHz to 60~MHz field programmable gate array (FPGA)-based software defined radio (SDR) receiver with direct applicability to radio astronomy. In this paper, we describe the PSWS and TangerineSDR architecture, show examples of how the TangerineSDR could be used to observe Jovian decametric emission, and discuss the applicability of the TangerineSDR to radio astronomy in general.

JF - Annual (Summer) Eastern Conference PB - Society of Amateur Radio Astronomers (SARA) CY - Virtual UR - https://rasdr.org/store/books/books/journals/proceedings-of-annual-conference ER - TY - CONF T1 - HamSCI Personal Space Weather Station (PSWS): Architecture and Current Status T2 - NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions) Y1 - 2021 A1 - Nathaniel A. Frissell A1 - Dev Joshi A1 - Veronica I. Romanek A1 - Kristina V. Collins A1 - Aidan Montare A1 - David Kazdan A1 - John Gibbons A1 - William D. Engelke A1 - Travis Atkison A1 - Hyomin Kim A1 - Scott H. Cowling A1 - Thomas C. McDermott A1 - John Ackermann A1 - David Witten A1 - Julius Madey A1 - H. Ward Silver A1 - William Liles A1 - Steven Cerwin A1 - Philip J. Erickson A1 - Ethan S. Miller A1 - Juha Vierinen AB -

Recent advances in geospace remote sensing have shown that large-scale distributed networks of ground-based sensors pay large dividends by providing a big picture view of phenomena that were previously observed only by point-measurements. While existing instrument networks provide excellent insight into ionospheric and space science, the system remains undersampled and more observations are needed to advance understanding. In an effort to generate these additional measurements, the Ham Radio Science Citizen Investigation (HamSCI, hamsci.org) is working with the Tucson Amateur Packet Radio Corporation (TAPR, tapr.org), an engineering organization comprised of volunteer amateur radio operators and engineers, to develop a network of Personal Space Weather Stations (PSWS). These instruments that will provide scientific-grade observations of signals-of-opportunity across the HF bands from volunteer citizen observers as part of the NSF Distributed Array of Small Instruments (DASI) program. A performance-driven PSWS design (~US$500) will be a modular, multi-instrument device that will consist of a dual-channel phase-locked 0.1-60 MHz software defined radio (SDR) receiver, a ground magnetometer with (~10 nT resolution and 1-sec cadence), and GPS/GNSS receiver to provide precision time stamping and serve as a GPS disciplined oscillator (GPSDO) to provide stability to the SDR receiver. A low-cost PSWS (< US$100) that measures Doppler shift of HF signals received from standards stations such as WWV (US) and CHU (Canada) and includes a magnetometer is also being developed. HF sounding algorithms making use of signals of opportunity will be developed for the SDR-based PSWS. All measurements will be collected into a central database for coordinated analysis and made available for public access.

JF - NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions) PB - CEDAR CY - Virtual ER - TY - CONF T1 - HF Spectrum Playback using Gnuradio (Demonstration) T2 - HamSCI Workshop 2019 Y1 - 2019 A1 - John Ackermann JF - HamSCI Workshop 2019 PB - HamSCI CY - Cleveland, OH ER -