The blind deconvolution employs conventional plane-wave beamforming using an array, selects a well-resolved angle of arrival for beam steering to estimate the phase component of an unknown source waveform, and then extracts the Green's function between the source and the array. In this letter, the approach is extended to multiple-ship scenarios in which the multipath arrivals from one ship are masked by other ships, adopting the basic concept of successive interference cancellation. Once individual Green's functions are available, the array invariant method based on the beam-time migration can be subsequently applied to estimate each source range. Simultaneous localization of two ships radiating broadband noise (200-900 Hz) is demonstrated using a 16-element, 56-m long vertical array in approximately 100-m deep shallow water.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1121/1.5111773 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Electrochemical deposition of Ni on arrays of GaAs nanowires with n-type channels.
Nanotechnology
December 2024
Ioffe Institute, Politekhnicheskaya st. 29, Sankt-Peterburg, 194021, RUSSIAN FEDERATION.
The processes of electrochemical deposition of Ni on vertically aligned GaAs nanowires (NWs) grown by molecular-beam epitaxy (MBE) using Au as a growth catalyst on Si(111) substrates were studied. Based on the results of electrochemical deposition, it was concluded that during the MBE synthesis of NWs the self-induced formation of conductive channels can occur inside NWs, thereby forming quasi core-shell nanowires. Depending on the length of the channel compare to the NW heights and the parameters of electrochemical deposition, the different hybrid metal-semiconductor nanostructures, such as Ni nanoparticles on GaAs NW side walls, Ni clusters on top ends of GaAs NWs, core-shell Ni/GaAs NWs, were obtained.
View Article and Find Full Text PDFHalbach Array Induced Magnetic Field Alignment in Boron Nitride Nanocomposites.
Adv Sci (Weinh)
December 2024
Department of Industrial and Materials Science, Chalmers University of Technology, Göteborg, 41296, Sweden.
Thermal conductivity enhancement in polymers is vital for advanced applications. This study introduces a novel method to align hexagonal boron nitride (hBN) nanosheets within polydimethylsiloxane (PDMS) matrices using a Halbach array to create a highly uniform magnetic field. This technique achieves significant improvements in thermal conductivity by effectively aligning hBN nanosheets.
View Article and Find Full Text PDFGrowth-based monolithic 3D integration of single-crystal 2D semiconductors.
Nature
December 2024
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
The demand for the three-dimensional (3D) integration of electronic components is steadily increasing. Despite substantial processing challenges, the through-silicon-via (TSV) technique emerges as the only viable method for integrating single-crystalline device components in a 3D format. Although monolithic 3D (M3D) integration schemes show promise, the seamless connection of single-crystalline semiconductors without intervening wafers has yet to be demonstrated.
View Article and Find Full Text PDFOptically Pumped and Electrically Switchable Microlaser Array Based on Elliptic Deformation and Q-Attenuation of Organic Droplet Oscillators.
Adv Mater
December 2024
Department of Materials Science, Institute of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.
Conventional laser panel displays are developed through the mass integration of electrically pumped lasers or through the incorporation of a beam steering system with an array of optically pumped lasers. Here a novel configuration of a laser panel display consisting of a non-steered pumping beam and an array of electrically Q-switchable lasers is reported. The laser oscillator consists of a robust, self-standing, and deformable minute droplet that emits laser through Whispering-Gallery Mode resonance when optically pumped.
View Article and Find Full Text PDFThis publisher's note contains a correction to Opt. Lett.49, 3102 (2024)10.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!