Acoustical Society of America’s Post

POMA This paper presents analysis of soundscapes and noise interferometry from moored receivers in the vicinity of the New England Seamounts. https://lnkd.in/gvCThsbX #acoustics Naval Postgraduate School

JASA EXPRESS LETTERS Naval Postgraduate School researchers used a split-beamed echosounder for scattering measurements of rocky seafloors: https://lnkd.in/gkNKKhQk #acoustics #SignalProcessing

Deactivation of End-of-Life Batteries with Corey Love from the U.S. Naval Research Laboratory. This talk details the risks associated with end-of-life batteries and explores techniques for deactivating them when they reach the end of their useful life. Among these techniques, saltwater immersion shows promise, but it is hindered by slow deactivation and potential electrolyte release. https://lnkd.in/eSCm8yVW #BatterySafetySummit #batterysafety

JASA Here, the broadband constant beam pattern spherical array synthesis theory is applied to suppress or to cancel wideband three-dimensional interfering noise sources by implanting zeros in the array's original synthesized shading function. https://lnkd.in/gTyDcEV9 #acoustics Naval Sea Systems Command (NAVSEA)

This conference proceedings illustrates a practical methodology to improve #covariance estimation using the principles of lucky #signalprocessing and the cumulative #coherence. Lucky processing, popularized in astro-photography, is a technique that increases signal quality by selectively keeping only a small fraction from a pool of potential snapshots. Cumulative coherence, a measure of how well a set of vectors is described by its subsets, provides the measure of “data quality” that enables the lucky processing. This approach is described practically and then applied to covariance estimation on an #acousticarray by taking a fixed duration sample of data and creating a dense set of snapshots with higher than usual overlap. From these densely sampled snapshots, the “luckiest” ones were found using cumulative coherence, and the covariance was averaged as normal. It was found that the lucky covariance estimate was successful at adaptive matched field processing and produced a less ambiguous processor output than the conventional estimator. The lucky covariance estimate had a higher estimated signal-to-noise ratio, especially when the source was at longer ranges from the #array. #mai #marineacoustics Acoustical Society of America #technology #innovation #sonar United States Naval Research Laboratory #acoustics #underwateracoustics #research https://lnkd.in/ej5MCmVB

POMA This conference proceedings illustrates a practical methodology to improve covariance estimation using the principles of lucky signal processing and the cumulative coherence. https://lnkd.in/gNEWWxJh #acoustics United States Naval Research Laboratory

Mahan Naval theory has become more strong.

Should Data-Driven AI "Pull the Strings" on the Battlefield? As artificial intelligence and autonomous systems advance, we're entering a new era of warfare where AI could potentially make life-and-death decisions on the battlefield. The rapid evolution of autonomous weapons raises profound ethical dilemmas and challenges the balance between strategic advantages and unprecedented risks. Should data-driven AI be left responsible for "pulling the strings" on the battlefield? #AutonomousWeapons #MilitaryEthics #AIinWarfare #USMC #DoD #Leadership Anduril Industries Motivf United States Marine Corps Marine Corps Air Facility (MCAF) Quantico Defense Advanced Research Projects Agency (DARPA) Naval Postgraduate School Naval Warfare Studies Institute at Naval Postgraduate School LtGen Mike Dana, USMC (Ret) Allie K. Miller Ian Eishen Jon Margolick Jay Long

What’s next in naval technology? Come see Leidos at #SAS2024 and learn how we’re leveraging proven technology to meet current and future needs in the maritime domain.

A great book, providing a detailed technical history of the transformation of Nelson era ships-of-the-line into World War I’s dreadnoughts. The author, historian Warren Berry, brings a solid assessment of the technical and operational changes influencing Britain’s 19th century warship construction. The book does concentrate on the Royal Navy’s battleship evolution; mentions of other Navies and ship types only appear as comparisons to Britain’s capital ships. Berry focuses on the uneven evolution in the three technologies necessary for battleship construction: guns, armor, and engines. He describes the roughly 80-year period leading up to HMS DREADNOUGHT as one of constant evolution, with designers struggling to find the right balance of established technology in many different fields while facing the pressure of uncertain future development. Berry also discusses the interaction between shipbuilding and politics, both internal to the defense establishment and at the national level. The book emphasizes the need to match technological promise to strategic goals while considering political necessity. A great book for understanding the difficulties of synthesizing Naval force structure in a period of rapid technological change and strategic shifts.