Results 11 to 20 of about 1,544,815 (380)

Positioning with the Global Positioning System [PDF]

open access: yesInternational Astronomical Union Colloquium, 1980
AbstractThis year (1980) the U. S. Department of Defense has scheduled to have in operation six satellites of the Global Positioning System (GPS), which will provide timing and three dimensional position recovery potential to North America during certain segments of a day.
openaire   +2 more sources

Mode Inference using enhanced Segmentation and Pre-processing on raw Global Positioning System data

open access: yesMeasurement + Control, 2020
Many applications use the Global Positioning System data that provide rich context information for multiple purposes. Easier availability and access of Global Positioning System data can facilitate various mobile applications, and one of such ...
Asif Nawaz   +6 more
doaj   +1 more source

GeoNotes: A Location-based Information System for Public Spaces [PDF]

open access: yes, 2002
The basic idea behind location-based information systems is to connect information pieces to positions in outdoor or indoor space. Through position technologies such as Global Positioning System (GPS), GSM positioning, Wireless LAN positioning ...
Cöster, Rickard   +4 more
core   +2 more sources

Single-Frequency Precise Point Positioning Using Regional Dual-Frequency Observations

open access: yesSensors, 2021
High-precision and low-cost single-frequency precise point positioning (SF-PPP) has been attracting more and more attention in numerous global navigation satellite system (GNSS) applications.
Junping Zou, Ahao Wang, Jiexian Wang
doaj   +1 more source

Real-time precision pedestrian navigation solution using Inertial Navigation System and Global Positioning System

open access: yesAdvances in Mechanical Engineering, 2015
Global Positioning System and Inertial Navigation System can be used to determine position and velocity. A Global Positioning System module is able to accurately determine position without sensor drift, but its usage is limited in heavily urbanized ...
Yong-Jin Yoon   +3 more
doaj   +1 more source

Research on Multi-sensor Fusion Localization for Autonomous-rail Rapid Tram

open access: yesKongzhi Yu Xinxi Jishu, 2022
Traditional positioning methods, such as GNSS (global navigation satellite system) and location base service, have large positioning error when applied in complex traffic scenarios such as like tunnels buildings and viaducts.
PAN Wenbo   +5 more
doaj   +1 more source

Research on a mixed prediction method to vehicle integrated navigation systems

open access: yesInternational Journal of Advanced Robotic Systems, 2019
Aiming to improve the positioning accuracy of vehicle integrated navigation system (strapdown inertial navigation system/Global Positioning System) when Global Positioning System signal is blocked, a mixed prediction method combined with radial basis ...
Di Zhao, Huaming Qian, Dingjie Xu
doaj   +1 more source

Iterative least squares method for global positioning system [PDF]

open access: yesAdvances in Radio Science, 2011
The efficient implementation of positioning algorithms is investigated for Global Positioning System (GPS). In order to do the positioning, the pseudoranges between the receiver and the satellites are required.
Y. He, A. Bilgic
doaj   +1 more source

Research Article. Improved Dual Frequency PPP Model Using GPS and BeiDou Observations

open access: yesJournal of Geodetic Science, 2017
This paper introduces a new dual-frequency precise point positioning (PPP) model, which combines GPS and BeiDou observations. Combining GPS and BeiDou observations in a PPP model offers more visible satellites to the user, which is expected to enhance ...
Afifi A., El-Rabbany A.
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

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