Fiscal Year	2024
Division	NPS Naval Research Program
Department	Physics Department
Investigator(s)	Kay L Gemba
Sponsor	NPS Naval Research Program (Navy)
Summary	The 75 Hz Kauai-Beacon source is well-situated for observing the North Pacific Ocean acoustically, and ongoing efforts enable transmissions and analysis of broadband signals in 2023 and beyond. This is the first demonstration of acoustic receiving along paths to Wake Island (approximately 3500 km). The 44 received m-sequence waveforms exhibit excellent phase stability with processing gain approaching the maximum theoretical gain evaluated over the 20 min signal transmission duration. This research addresses modeling and data processing of topic of interest at basin scales, including oceanography, observed Doppler (waveform dilation), thermometry and underwater geo-positioning.
Keywords	Ocean Modeling, Ocean Acoustics, Position Location Information, underwater acoustics
Publications	Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal
Data	Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal