Results 1 to 10 of about 340,630 (342)

Travel patterns during pregnancy: comparison between Global Positioning System (GPS) tracking and questionnaire data. [PDF]

open access: yesEnviron Health, 2013
BackgroundMaternal exposures to traffic-related air pollution have been associated with adverse pregnancy outcomes. Exposures to traffic-related air pollutants are strongly influenced by time spent near traffic.
Wu J   +6 more
europepmc   +2 more sources

Global Positioning System (GPS)

open access: yes, 2016
Author: -------(19-11-2013) 1 | P a g e GPS and its Functionality Global Positioning System (GPS) innovated by the US Department of Defence is a system for navigation that allows one to roam easily, find locations and predict destination routes while ...
Joseph Khoury, Gilles Lamothe
openaire   +2 more sources

ANALYSIS OF POSITIONING DEVIATION BETWEEN BEIDOU AND GPS BASED ON NATIONAL REFERENCE STATIONS IN CHINA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
In order to probe into the characteristics of positioning deviation between Beidou Navigation Satellite System (Beidou) and global positioning system (GPS), and investigate possible contribution of Beidou data to refinement of global coordinate system ...
M. Chen, Q. Zhang, Q. Zhang
doaj   +1 more source

Wetland vegetation changes in response to climate change and human activities on the Tibetan Plateau during 2000–2015

open access: yesFrontiers in Ecology and Evolution, 2023
The Tibetan Plateau (TP), known as the third pole, is the highest plateau in the world. It has numerous wetlands, which are important ecological security barriers and plays an important role in mitigating global climate change. This paper employed breaks
Yuhan Chen   +11 more
doaj   +1 more source

ConGPS: A Smart Container Positioning System Using Inertial Sensor and Electronic Map with Infrequent GPS

open access: yesSensors, 2023
Real-time global positioning is important for container-based logistics. However, a challenge in real-time global positioning arises from the frequency of both global positioning system (GPS) calls and GPS-denied environments during transportation.
Shan Huang   +5 more
doaj   +1 more source

OL-SLAM: A Robust and Versatile System of Object Localization and SLAM

open access: yesSensors, 2023
This paper proposes a real-time, versatile Simultaneous Localization and Mapping (SLAM) and object localization system, which fuses measurements from LiDAR, camera, Inertial Measurement Unit (IMU), and Global Positioning System (GPS).
Chao Chen   +6 more
doaj   +1 more source

UAV ONBOARD GPS IN POSITIONING DETERMINATION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
The establishment of ground control points is a critical issue in mapping field, especially for large scale mapping. The fast and rapid technique for ground control point’s establishment is very important for small budget projects.
K. N. Tahar, S. S. Kamarudin
doaj   +1 more source

Assessing the Performance of Precise Point Positioning (PPP) with the Fully Serviceable Multi-GNSS Constellations: GPS, BDS-3, and Galileo

open access: yesRemote Sensing, 2023
Nowadays, both BDS-3 and Galileo can provide global positioning and navigation services. This contribution carried out a comprehensive analysis and validation of positioning performance in terms of positioning accuracy (RMS) and convergence time, which ...
Zunyao Hou, Feng Zhou
doaj   +1 more source

Fault tolerant GPS-AOA-SINS integrated navigation algorithm based on federated Kalman filter

open access: yesTongxin xuebao, 2022
At present, global positioning system (GPS) was widely used in outdoor positioning.However, the continuous development of cities complicated the positioning environment, resulting in a sharp decline in positioning accuracy.Therefore, the integrated ...
Rui JIANG   +4 more
doaj   +2 more sources

High precision positioning system for autopilot based on multi-sensor fusion [PDF]

open access: yesE3S Web of Conferences, 2021
For autonomous vehicles, autonomous positioning is a core technology in their development. A good positioning system not only helps them efficiently complete autonomous operations, but also improves safety performance.
Luo Haoru, Liu Kechun
doaj   +1 more source

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