Results 11 to 20 of about 212,791 (331)
Capturing mobile underwater pseudonoise synchronous signal using multi‐strategy in waveform domain
Electronics Letters, 2023 Capturing pseudonoise (PN) synchronous signals is an important issue in spreading spectrum underwater acoustic communication. In this letter, local waveform domain information is combined with multi‐strategy to enhance the Doppler tolerance of ...
Yaohui Hu +3 more
doaj +1 more source
Oxygen isotope geochemistry of the second HSDP core [PDF]
, 2003 Oxygen isotope ratios were measured in olivine phenocrysts (~1 mm diameter), olivine microphenocrysts (generally ~100–200 µm diameter), glass, and/or matrix from 89 samples collected from depths down to 3079.7 m in the second, and main, HSDP core (HSDP-2)
Eiler, John M. +2 more
core +1 more source
The Carboniferous Southern Pennine Basin, UK [PDF]
, 2014 Many of the Carboniferous outcrops located in the Derbyshire region of the Peak District National Park, UK, have provided sites for both significant and pioneering research relating to the clastic sedimentology of marine palaeoenvironments, particularly ...
Mountney, NP, Pringle, JK, Southern, SJ
core +4 more sources
Data-driven Autonomous Decision-making Method for the Effective Position of AUV Torpedo Attacks
水下无人系统学报, 2022 Autonomous decision-making capability is a distinctive feature that distinguishes unmanned undersea vehicles from manned platforms. This capability is characterized by a short autonomous decision-making time, high decision-making accuracy, and executable
Li-qiang GUO +3 more
doaj +1 more source
Lighting as a Circadian Rhythm-Entraining and Alertness-Enhancing Stimulus in the Submarine Environment [PDF]
, 2006 The human brain can only accommodate a circadian rhythm that closely follows 24 hours. Thus, for a work schedule to meet the brain’s hard-wired requirement, it must employ a 24 hour-based program.
Bullough, J. D. +4 more
core +1 more source
Glass in the submarine section of the HSDP2 drill core, Hilo, Hawaii [PDF]
, 2004 The Hawaii Scientific Drilling Project recovered ~3 km of basalt by coring into the flank of Mauna Kea volcano at Hilo, Hawaii. Rocks recovered from deeper than ~1 km were deposited below sea level and contain considerable fresh glass. We report electron
Baker, Michael +4 more
core +1 more source
Geofluids, 2022 Marine vertical cable seismic (VCS) collects seismic waves by hydrophone array vertically suspended in seawater to prospect the offshore geological structure and monitor the reservoir.
Linfei Wang +5 more
doaj +1 more source
Line spectrum extraction method based on hidden Markov model
Electronics Letters, 2021 To solve the difficult problem of line spectrum detection with a low signal‐to‐noise ratio, a line spectrum extraction algorithm based on a hidden Markov model (HMM) is proposed.
Kai Ma +4 more
doaj +1 more source
In-field entanglement distribution over a 96 km-long submarine optical fibre [PDF]
, 2018 Techniques for the distribution of quantum-secured cryptographic keys have reached a level of maturity allowing them to be implemented in all kinds of environments, away from any form of laboratory infrastructure.
Bo, Liu +17 more
core +5 more sources
Journal of Marine Science and Engineering, 2023 Submarines with pumpjet propulsors have recently been used in many countries to improve their propulsion and noise performance. The pumpjet has the advantage of improving noise and cavitation performance by increasing the pressure inside the duct, and it
Jin-Wook Kim +5 more
doaj +1 more source