@conference {424,
	title = {HamSCI Distributed Array of Small Instruments Personal Space Weather Station (DASI-PSWS): Architecture and Current Status (Invited)},
	booktitle = {NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions)},
	year = {2020},
	month = {06/2020},
	address = {Santa Fe, NM (Virtual)},
	abstract = {<p>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 (\&lt; 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.</p>
},
	url = {http://cedarweb.vsp.ucar.edu/wiki/index.php/2020_Workshop:MainVG},
	author = {N. A. Frissell and D. Joshi and K. Collins and A. Montare and D. Kazdan and J. Gibbons and S. Mandal and W. Engelke and T. Atkison and H. Kim and A. J. Gerrard and J. S. Vega and S. H. Cowling and T. C. McDermott and J. Ackermann and D. Witten and H. W. Silver and W. Liles and S. Cerwin and P. J. Erickson and E. S. Miller}
}
@conference {213,
	title = {HamSCI and the 2017 Total Solar Eclipse},
	booktitle = {HamSCI-UK},
	year = {2017},
	month = {10/2017},
	publisher = {HamSCI-UK},
	organization = {HamSCI-UK},
	address = {Milton Keynes, UK},
	author = {N. A. Frissell and W. Engelke and J. D. Katz and J. S. Vega}
}
@conference {210,
	title = {HamSCI and the 2017 Total Solar Eclipse (First Results)},
	booktitle = {ARRL and TAPR Digital Communications Conference},
	year = {2017},
	month = {09/2017},
	address = {St. Louis, MO},
	url = {https://www.tapr.org/pub_dcc.html},
	author = {N. A. Frissell and W. Engelke and J. D. Katz and S. W. Gunning and J. S. Vega}
}
@conference {208,
	title = {The H.A.R.C. Database and Visualization Utilities},
	booktitle = {ARRL and TAPR Digital Communications Conference},
	year = {2017},
	month = {09/2017},
	address = {St. Louis, MO},
	abstract = {<p>HamSCI{\textquoteright}s goal is to construct a symbiotic relationship between the formal research community and the Amateur Radio community. To facilitate this transfer of knowledge HamSCI must pioneer technologies that allow scientists to easily obtain and understand Amateur Radio data. This task necessitates the creation of warehousing and visualization facilities that allow scientists to easily understand and make use of our data sets. We are currently testing a database and visualization toolkit designed to handle our existing 2 billion-record long QSO log. This data set represents a compiled version of data gathered by the Reverse Beacon Network, WSPRNet, and PSKReporter. Our goal is to build a robust, fast, and queryable front end to the massive, and currently underuti- lized, data sources created by Amateur Radio operators.</p>
},
	url = {https://www.tapr.org/pub_dcc.html},
	author = {J. D. Katz and W. Engelke and N. A. Frissell}
}
