Results 21 to 30 of about 2,391,880 (290)
High-Accuracy Reference-Free Ultrasonic Location Estimation [PDF]
IEEE Transactions on Instrumentation and Measurement, 2012 This paper presents a novel reference-free ultrasonic indoor location system. Unlike most previous proposals, the mobile device (MD) determines its own position based only on ultrasonic signals received at a compact sensor array and sent by a fixed independent beacon. No radio frequency or wired timing reference signal is used.
Saad, Mohamed M. +3 more
openaire +3 more sources
Location accuracy of VLF World-Wide Lightning Location (WWLL) network: Post-algorithm upgrade [PDF]
Annales Geophysicae, 2005 An experimental VLF World-Wide Lightning Location (WWLL) network has been developed through collaborations with research institutions across the globe.
C. J. Rodger +2 more
doaj +1 more source
TDOA Location Accuracy Experiment
Journal of Physics: Conference Series, 2019 Abstract TDOA-based wireless signal location technology has been extensively used in engineering applications. Due to the lack of quantitative TDOA location accuracy index benchmark, there is the absence of reference basis in the development of TDOA application system indicators and performance evaluation.
Xiping Wen, Jinxia Wang
openaire +1 more source
Location accuracy limitations for CCD cameras [PDF]
Astronomy & Astrophysics, 2001 The accurate measurement of the position of celestial objects is a fundamental step forseveral astrophysical investigations. For ground based instruments, the atmosphere is considered the basic limiting factor; in space, the knowlwdge of the instrumental parameters and/or their stability define the performance limits, but CCD cameras operated in time ...
Gay M +6 more
openaire +4 more sources
Location prediction based on a sector snapshot for location-based services [PDF]
, 2013 In location-based services (LBSs), the service is provided based on the users' locations through location determination and mobility realization. Most of the current location prediction research is focused on generalized location models, where the ...
A-C Pang +23 more
core +2 more sources
Location accuracy of long distance VLF lightning locationnetwork [PDF]
Annales Geophysicae, 2004 An experimental VLF WorldWide Lightning Location (WWLL) network is being developed to provide realtime locations of cloud to ground lightning discharges occurring throughout the globe. This network has expanded from a limited number of stations in the
C. J. Rodger +3 more
doaj +1 more source
Sensors, 2009 In the photogrammetry field, interest in region detectors, which are widely used in Computer Vision, is quickly increasing due to the availability of new techniques.
Francesco Nex +2 more
doaj +1 more source
Enhanced indoor location tracking through body shadowing compensation [PDF]
, 2016 This paper presents a radio frequency (RF)-based location tracking system that improves its performance by eliminating the shadowing caused by the human body of the user being tracked.
Joseph, Wout +4 more
core +1 more source
The ability to appropriately distinguish throws for different target positions
Frontiers in Sports and Active Living, 2023 Repeated and accurate throwing of an object to a target position is a special human motor skill. It is particularly important to understand accuracy, which has received less attention than speed due to difficulties in measurement.
Ayane Kusafuka +4 more
doaj +1 more source
FLAMINGO – Fulfilling enhanced location accuracy in the mass-market through initial GalileO services [PDF]
, 2018 This paper discusses FLAMINGO, an initiative that will provide a high accuracy positioning service to be used by mass market applications. The status and future for the initiative are discussed, the required accuracies and other location parameters are ...
Arzel, Laurent +7 more
core +1 more source