Three Papers Published by HamSCI Community Authors

Congratulations are in order for a number of HamSCI community members, performing their research at many different home institutions.  In chronological order, we'd like to recognize these principal authors and their co-authors....

February, 2026

Steve Cerwin and an international group of co-authors, from the University of Scranton, SSI and SERENE (Space Environment Radio Engineering Group, University of Birmingham) published "HamSCI HF multipath propagation mode analysis using amateur radios and audio waveforms sensitive to time difference of arrival" in Frontiers in Astronomy and Space Sciences.

Their study describes a method to deduce the ionization layer virtual height and propagation path geometry responsible for communication between two HF radio stations a fixed distance apart. The method measures the Time Difference of Arrival (TDOA) between multipath propagation modes involving the active ionospheric layers and reconciles the data with a virtual height model of the ionosphere.

DOI: 10.3389/fspas.2026.1723511

March, 2026

Maris Usis and 19 co-authors recently published  "Detecting changes in along-path HF propagation during the April 2024 total solar eclipse with radio amateurs and low-cost instrumentation" in the peer-reviewed journal Frontiers in Astronomy and Space Sciences.

The Case Western Reserve University (CWRU) team deployed GPS time-synced radio receivers, tuned to CHU, during the April 8, 2024 eclipse.  The receivers recorded changes in signal level which occurred during the eclipse transit. Credit is given to the amateur radio and citizen science communities for participating in the experiment.

DOI: 10.3389/fspas.2025.1720301

March, 2026

Sabastian Fernandes,  New Jersey Institute of Technology (NJIT) and a group of co-authors from NJIT, CWRU and SSI, published an original research article entitled "Characterizing ionospheric variability through HF Doppler measurements: a statistical and numerical ray tracing analysis" in Frontiers in Astronomy and Space Sciences.

Sabastian and team presents a statistical analysis of Doppler shifts observed using GRAPE high frequency receivers, with their observations backed by PHaRLAP ray tracing simulations.

DOI:10.3389/fspas.2026.1713968

Solar disk image credit: NASA.gov, Solar Dynamics Observatory,10-03-24_1219UTC