@proceedings {1036,
	title = {Radio Propagation Time Of Flight Measurements:},
	year = {2026},
	month = {03/2026},
	publisher = {HamSCI},
	address = {Newington, CT},
	abstract = {<p>Time Of Flight measurements over multiple paths can be a valuable tool when validating and refining radio propagation models. This presentation will discuss current methods in use and several new projects and designs that are being developed for the HamSCI PSWS program. These will include the {\textquotedblleft}Time-Sync Injector{\textquotedblright} and associated software, which is used with an Software Defined Radio such as the RX-888 to allow accurate Time Of Arrival measurement of received signals. Also described will be the {\textquotedblleft}Time-Stamp Transmitter{\textquotedblright}, which generates flexible-format time-stamped signals, and a new receiver design, based on the RX-888, but intended to serve as a platform for future time and frequency measurement projects.</p>
},
	author = {Nathaniel Frissell and Scott Newell and Rob Robinett and Clinton Turner and Gwyn Griffiths and Paul Elliott}
}
@proceedings {641,
	title = {Ray Tracing in Python Utilizing the PHaRLAP Engine},
	year = {2022},
	month = {03/2022},
	publisher = {HamSCI},
	address = {Huntsville, AL},
	abstract = {<p>Provision of High-Frequency Raytracing Laboratory for Propagation (PHaRLAP) is an ionospheric ray tracing library developed by the Australian Department of Defence (DOD). PHaRLAP is freely available as a MATLAB toolbox downloadable from an Australian DOD website. PHaRLAP is capable of numerically ray tracing radio propagation paths using 2D and 3D algorithms through model ionospheres, most typically the International Reference Ionosphere (IRI). In an effort to make PHaRLAP available to a wider user community we are porting the PHaRLAP MATLAB toolbox to the open source Python 3 language while retaining the original core PHaRLAP computational engine. In this presentation, we describe the architecture of the new Python 3 PHaRLAP interface and demonstrate examples of 2D ray traces using the new interface.</p>
},
	author = {Alexander Calderon and William Liles and Nathaniel Frissell and Joshua Vega}
}
