Results 31 to 40 of about 138,872 (154)

ASG-EUPOS - a Multifunctional Precise Satellite Positioning System in Poland [PDF]

open access: yesTransNav, 2007
With the beginning of January 2007 the realisation of the ASG-EUPOS multifunctional precise satellite positioning system in Poland has begun. The system founded in Poland is a part of a larger project EUPOS?, involving the countries of the Central and ...
Jaroslaw Bosy   +2 more
doaj  

Analysis of iridium-augmented GPS positioning performance

open access: yesThe Journal of Engineering, 2019
Although the global positioning system (GPS) has a series of advantages such as global and high precision, there are still many deficiencies, in many cases, GSP cannot meet the requirements of the positioning accuracy.
Liu Xiao, Zhang Lei
doaj   +1 more source

A Novel Deep Learning Approach to 5G CSI/Geomagnetism/VIO Fused Indoor Localization

open access: yesSensors, 2023
For positioning tasks of mobile robots in indoor environments, the emerging positioning technique based on visual inertial odometry (VIO) is heavily influenced by light and suffers from cumulative errors, which cannot meet the requirements of long-term ...
Chaoyong Yang   +5 more
doaj   +1 more source

High-Speed Running and Sprinting Thresholds in Elite Female Team Sports: A Systematic Review

open access: yesApplied Sciences
Over the past decade, participation in female team sports has increased significantly, leading to greater interest in monitoring their training and competition load using wearable technology.
Raúl Nieto-Acevedo   +4 more
doaj   +1 more source

A low-cost solution for unmanned aerial vehicle navigation in a global positioning system–denied environment

open access: yesInternational Journal of Distributed Sensor Networks, 2018
The ability of an autonomous unmanned aerial vehicle to navigate and fly precisely determines its utility and performance. The current navigation systems are highly dependent on the global positioning system and are prone to error because of global ...
Shahrukh Ashraf   +5 more
doaj   +1 more source

Study of flora and structure of weed communities of saffron (Crocus sativus L.) fields in Khorasan Razavi province [PDF]

open access: yesZirā̒at va Fanāvarī-i Za̒farān, 2018
The Khorasan Razavi province is the center of saffron production in Iran and the world. Among factors affecting saffron gap yield, weeds are the most important one.
Ali Asghar Padarloo   +3 more
doaj   +1 more source

Optimised design of next‐generation multiplexing schemes for Global Navigation Satellite Systems

open access: yesIET Radar, Sonar & Navigation, 2023
Multilevel and multicarrier component signals are now common in many Global Navigation Satellite Systems challenging the employed multiplexing method that needs to be more flexible and powerful. In this work, the authors demonstrate how, by acting on two
Andrea Nardin   +4 more
doaj   +1 more source

A dynamic localization network for regional navigation under global navigation satellite system denial environments

open access: yesInternational Journal of Distributed Sensor Networks, 2019
Global navigation satellite system signals are easily distorted by the interferences or disturbances, and global navigation satellite system receivers cannot offer continuous effective navigation results in challenging environments.
Hongwei Zhao, Yue Yan, Xiaozhu Shi
doaj   +1 more source

Design of a new type of combined underground personnel positioning system

open access: yesGong-kuang zidonghua, 2014
In view of problems that current underground personnel positioning has low accuracy, cannot realize real-time global positioning and it is difficult to search and rescue trapped people, a combined underground personnel positioning system based on ...
LIU Yong   +3 more
doaj   +1 more source

Relativity in the Global Positioning System

open access: yesLiving Reviews in Relativity, 2003
The Global Positioning System (GPS) uses accurate, stable atomic clocks in satellites and on the ground to provide world-wide position and time determination.
Ashby Neil
doaj  

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