Results 91 to 100 of about 12,179 (194)
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.Abstract Due to the properties of sound propagation underwater, including the existence of the SOFAR channel, sounds in the ocean can propagate over large distances with little attenuation. This makes passive acoustics a relevant method for monitoring natural events such as ice calving, earthquakes, and underwater volcanic eruptions.
Pierre‐Yves Raumer +4 more
wiley +1 more source
Dynamic double directional propagation channel analysis with dual circular arrays [PDF]
, 2004 Dynamic double directional propagation channel analysis with dual circular arrays. (pp. 6 p).
Beach, MA +4 more
core +1 more source
Inferring activity patterns of aquatic animals from single‐receiver acoustic telemetry setups
Methods in Ecology and Evolution, Volume 16, Issue 12, Page 2931-2944, December 2025.Abstract Acoustic telemetry has become an essential tool for studying activity patterns of animals in aquatic environments. Activity is typically recorded using transmitters with integrated sensors or dense receiver arrays for positional tracking. While effective, these approaches are financially and logistically expensive due to the need for advanced ...
Eneko Aspillaga +5 more
wiley +1 more source
M‐SADR: Mobile Self Adaptive Data Rate for Enhanced LoRa End‐Device Connectivity on the Move
International Journal of Communication Systems, Volume 38, Issue 15, October 2025.The proposed M‐SADR method targets mobile LoRa end‐devices and achieves better performance, with a 2.4% improvement in packet delivery ratio and a 5.7% reduction in power consumption per successfully delivered packet. ABSTRACT Mobility is a critical aspect of the Internet of Things, reflecting the diverse and dynamic nature of potential applications ...
Vasileios Moysiadis +6 more
wiley +1 more source
IEEE Access, 2019 The demand for accurate localization in complex environments continues to increase despite the difficulty in extracting positional information from measurements are not yet complete.
Yuan Xue +4 more
doaj +1 more source
Outbreak of Gigantic Jets Over an Isolated Thunderstorm in South China
Earth and Space Science, Volume 12, Issue 10, October 2025.Abstract On the evening of 18 August 2022, a sequence of five gigantic jets (GJs) were recorded within 7 min over an isolated coastal thunderstorm approximately 170 km to the southwest of Luoding County, Guangdong Province of China. The thunderstorm exhibited a higher −10°C isotherm altitude (500 m above average), a significant CAPE value (∼2,158 J/kg),
Yiwei Zhao +10 more
wiley +1 more source
Joint Estimation of DOA and TDOA of Multiple Reflections by Matrix Pencil in Mobile Communications
IEEE Access, 2019 This paper presents the joint estimation of the direction of arrival (DOA) and the time difference of arrival (TDOA) for multipath signals, which is the central issue for mobile communications.
Yu Zheng, Yongzhi Yu
doaj +1 more source
A TOF and TDOA underground joint positioning method based on UWB
Meikuang AnquanThe existing precise positioning system for mining personnel mainly adopts UWB positioning technology. The positioning method that only applies TOF requires joint ranging and orientation based on two positioning sub stations or antennas, which has ...
Xian CHEN
doaj +1 more source
Method for Rapid Judgment of Faulty Stations of Multilateration System
MATEC Web of Conferences, 2015 An airport surface multilateration system based on the time difference of arrival (TDOA) positioning principle establishes equations to calculate the position of target through utilizing the TDOA of targets’ answering signals to the ground receiving ...
Wu Honggang, Tang Yong, Li Xingbo
doaj +1 more source
Joint TDOA and AOA location algorithm
Journal of Systems Engineering and Electronics, 2013 For the joint time difference of arrival (TDOA) and angle of arrival (AOA) location scene, two methods are proposed based on the rectangular coordinates and the polar coordinates, respectively. The problem is solved perfectly by calculating the target position with the joint TDOA and AOA location.
Congfeng Liu, Jie Yang, Fengshuai Wang
openaire +1 more source