Dartmouth Events

Physics & Astronomy - Virtual Senior Honor Thesis - Claire Trop, Dartmouth

Title: "Traveling Ionospheric Disturbances Tracked Through Doppler-Shifted AM Radio Transmissions"

Thursday, May 27, 2021
12:30pm – 2:30pm
Zoom: Email for link and password
Intended Audience(s): Public
Categories: Lectures & Seminars

Abstract: We developed a technique for tracking traveling ionospheric disturbances (TIDs) through Doppler-shifted AM radio transmissions. The experimental design consists of a ring of sensors around the 810 kHz, clear channel, AM station in Schenectady, New York. We have validated the capabilities of this technique for identifying and characterizing TIDs with three internal methods of determining the phase velocity and direction of propagation and also through comparison with other established techniques such as Global Navigation Satellite System Total Electron Content (GNSS TEC) mapping. In addition, we demonstrate the capacity for full automation of analysis and determine that the upper half of the AM band yields increased amplitudes and more consistent event detection. Since this technique has inexpensive hardware and its analysis system can be fully automated, it has the potential to become a large scale network for tracking TIDs which is distinct, but complementary to currently available techniques.

For more information, contact:
Tressena Manning

Events are free and open to the public unless otherwise noted.