Give


ECE Seminar Series


Electrical and Computer Engineering Seminar

Title: Scintillation from Aristotle to GNSS
Speaker: Dr. Charles Rino
Affiliation: Boston College, Institute for Scientific Research
Day: Wednesday, May 6, 2015
Time: 11:00 am - 12:00 pm
Location: LSC 312

Abstract: This talk reviews the development of scintillation from its earliest astronomical optical and radio manifestations through beacon satellite observations following SPUTNIK to the present. Optical, radio, and acoustic scintillation were very active areas of research through the decades of the 1970s and 1980s, but the computational demands of the strong-scatter theory severely limited routine diagnostics. L-band scintillation induced by severe solar storms can disrupt Global Navigation Satellite System (GNSS) operations. Even so, global networks of GNSS receivers are providing critical inputs for improving physics-based models used for ionospheric delay correction and scintillation forecasting. Encouraging new strong-scatter theoretical results, made possible by enhanced capabilities of modern computer languages, will be described. These new results can be used to reconcile our understanding of the intermediate-scale structure that causes scintillation with a viable multi-frequency strong-scatter theory. GNSS research is in the forefront of advanced signal processing that blurs the distinction between software and hardware. This research can be exploited to improve both operational and diagnostic capabilities.