Results 41 to 50 of about 12,351 (211)
Sensor Networks TDOA Self-Calibration: 2D Complexity Analysis and Solutions
, 2020 Given a network of receivers and transmitters, the process of determining their positions from measured pseudo-ranges is known as network self-calibration.
Boutellier, Jani +4 more
core +1 more source
Location-free Spectrum Cartography [PDF]
, 2019 Spectrum cartography constructs maps of metrics such as channel gain or received signal power across a geographic area of interest using spatially distributed sensor measurements.
Beferull-Lozano, Baltasar +3 more
core +2 more sources
Leida xuebao, 2016 In order to determine single-observer passive coherent locations using illuminators of opportunity, we propose a jointing angle and Time Difference Of Arrival (TDOA) Weighted Least Squares (WLS) location method.
Zhao Yongsheng +2 more
doaj +1 more source
Distributed localization of a RF target in NLOS environments
, 2014 We propose a novel distributed expectation maximization (EM) method for non-cooperative RF device localization using a wireless sensor network. We consider the scenario where few or no sensors receive line-of-sight signals from the target. In the case of
Leng, Mei +4 more
core +1 more source
Research of underground positioning algorithm based on DOA and TDOA
Gong-kuang zidonghua, 2013 In view of problems that current underground positioning system is sensitive to environmental change and has low positioning accuracy, the paper introduced an underground positioning algorithm based on DOA and TDOA. The algorithm takes advantages of high
ZHAI Yan-rong +5 more
doaj +1 more source
TDOA--based localization in two dimensions: the bifurcation curve
, 2014 In this paper, we complete the study of the geometry of the TDOA map that encodes the noiseless model for the localization of a source from the range differences between three receivers in a plane, by computing the Cartesian equation of the bifurcation ...
Compagnoni, Marco, Notari, Roberto
core +1 more source
Geolocation with FDOA Measurements via Polynomial Systems and RANSAC
, 2017 The problem of geolocation of a transmitter via time difference of arrival (TDOA) and frequency difference of arrival (FDOA) is given as a system of polynomial equations.
Bates, Daniel J., Cameron, Karleigh J.
core +1 more source
Deep Underground Science and Engineering, EarlyView.This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu +4 more
wiley +1 more source
Applied Sciences, 2019 Cellular communication systems support mobile phones positioning function for Enhanced-911 (E-911) location requirements, but the positioning accuracy is poor. The fifth-generation (5G) cellular communication system can use indoor distribution systems to
Zhongliang Deng +6 more
doaj +1 more source
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 +5 more
doaj +1 more source