Results 51 to 60 of about 4,828 (221)

New three-dimensional positioning algorithm through integrating TDOA and Newton’s method

EURASIP Journal on Wireless Communications and Networking, 2020
Passive time difference location is an important method for passive location. There are fuzzy positioning, no solution, and low positioning accuracy with the spherical coordinate conversion method in the four-station TDOA positioning algorithm.
Junsuo Qu, Haonan Shi, Ning Qiao, Chen Wu, Chang Su, Abolfazl Razi   +5 more
doaj   +1 more source

A Compressed Encoding Scheme for Approximate Tdoa Estimation [PDF]

2018 26th European Signal Processing Conference (EUSIPCO), 2018
Accurate estimation of Time-Difference of Arrivals (TDOAs) is necessary to perform accurate sound source localization. The problem has traditionally been solved by using methods such as Generalized Cross-Correlation, which uses the entire signal to accurately estimate TDOAs. However, this could pose a problem in distributed sensor networks in which the
Elizabeth Vargas, James R. Hopgood, Keith E. Brown, Kartic Subr   +3 more
openaire   +2 more sources

Widespread Bomb Fishing in Indo‐Pacific Archipelago Revealed Through Machine Learning Accelerated Passive Acoustic Monitoring

Remote Sensing in Ecology and Conservation, EarlyView.
AI‐accelerated passive acoustic monitoring reveals extensive bomb fishing within the Spermonde Archipelago, with annual incidents numbering in the thousands. ABSTRACT Bomb fishing is recognised as the most destructive fishing practice that can be performed in our oceans.
Ben Williams, Mars Coral Restoration Project Monitoring Team, Aimee du Luart, Sonny Burniston, Tries B. Razak, Timothy A. C. Lamont, David J. Smith, Jamaluddin Jompa, David Curnick, Kate E. Jones   +9 more
wiley   +1 more source

FILTRATION OF PARAMETERS OF THE UAV MOVEMENT AT COMPLEX USE OF DATA SENSOR NETWORKS, OBTAINED BASED ON THE TDOA AND RSS METHODS

Information and Telecommunication Sciences, 2017
Background. At the present time the development of technologies for construction of unmanned aerial vehicles (UAVs) are used for the solution of a wide range of tasks, such as: emergency rescue operations, autonomous observation and monitoring of ...
Igor Tovkach, Serhii Zhuk
doaj   +1 more source

Kogia Records in Brazilian Equatorial and Southwestern Atlantic Oceans

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The pygmy (Kogia breviceps) and dwarf (Kogia sima) sperm whales are cryptic cetaceans characterized by inconspicuous surfacing behavior, small group sizes, and deep‐diving habits, making visual detection particularly challenging. Here, we present the first broad‐scale passive acoustic monitoring (PAM) assessment of Kogia spp.
Joao Pedro M. Mura, Raphael B. Machado, Yasmin P. Viana, Natalia Rodrigues‐Soares, Giovanne A. Ferreira, Larissa Kelmer L. Kascher, Barbara S. Silva, Lucia O. Alencar, Gabrieli M. Rodrigues, Franciele R. de Castro, Daniela F. Godoy, Jose L. Pizzorno, Artur Andriolo   +12 more
wiley   +1 more source

Research of TDOA based self-localization approach in Wireless Sensor Network [PDF]

, 2006
Sensor Network, which has integrated wireless communication, date collection and information processing capacities, is a booming technique in information collecting. With the development of research on Wireless Sensor Networks (WSNs), localization in the
Xiao J(肖军), Ren LR(任丽荣), Tan JD(谈金东)   +2 more
core  

Performance Analysis and Sensor-Target Geometry Optimization for TOA and TDOA-Based Hybrid Source Localization Method

Applied Sciences, 2022
Currently, the performance analysis of positioning algorithms and optimization of ground station deployment schemes are predominantly based on pure TOA or TDOA measurement information, and the relevant theoretical analysis is primarily the geometric ...
Guoning Ma, Zhijiang Huang, Ming Wang, Zhengyu Ji, Xianglu Li, Bo Shen, Jie Tian   +6 more
doaj   +1 more source

Selection of TDOA parameters for MDM speaker diarization [PDF]

Interspeech 2012, 2012
Several methods to improve multiple distant microphone (MDM) speaker diarization based on Time Delay of Arrival (TDOA) features are evaluated in this paper. All of them avoid the use of a single reference channel to calculate the TDOA values and, based on different criteria, select among all possible pairs of microphones a set of pairs that will be ...
Martínez González, Beatriz, Pardo Muñoz, José Manuel, Echeverry Correa, Julian David, Vallejo Pinto, José Ángel, Barra Chicote, Roberto   +4 more
openaire   +2 more sources

Seismo‐ and Tsunami‐Traveling Ionospheric Disturbances of the 29 July 2025 M8.8 Kamchatka Earthquake Observed by CW‐HF Doppler Sounding Systems and Ionosondes in Taiwan and Japan

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Doppler frequency shifts (DFSs) recorded by continuous wave‐high frequency Doppler sounding systems and ionograms observed by five ionosondes in Taiwan and Japan are used to study three‐dimensionally seismo‐ and tsunami‐traveling ionospheric disturbances (STIDs and TTIDs) triggered by the 29 July 2025 Mw8.8 Kamchatka earthquake.
Yao‐Chun Chen, Jann‐Yenq Liu, Tien‐Chi Liu, Katsumi Hattori, Jaroslav Chum, Chieh‐Hung Chen, Wen‐Yen Chang, Bor‐Shouh Huang, Rui Song, Horng‐Yuan Yen   +9 more
wiley   +1 more source

TDOA-Based Localization System with Narrow-band Signals [PDF]

, 2013
This paper gives a general overview of the challenges that arise in using narrow-band signals, such as GSM, for localisation based on the time properties of the signal. Specifically, synchronisation and retrieving of time information are addressed.
Dimitrova, D. C., Braun, T., Li, Z.
core