Results 11 to 20 of about 340,630 (342)

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

Assessment of BeiDou-3 and Multi-GNSS Precise Point Positioning Performance

open access: yesSensors, 2019
With the launch of BDS-3 and Galileo new satellites, the BeiDou navigation satellite system (BDS) has developed from the regional to global system, and the Galileo constellation will consist of 26 satellites in space. Thus, BDS, GPS, GLONASS, and Galileo
Guoqiang Jiao   +4 more
doaj   +1 more source

A Multi-Source Fusion Navigation System to Overcome GPS Interruption of Unmanned Ground Vehicles

open access: yesIEEE Access, 2023
The Inertial Navigation System/Global Positioning System (INS/GPS) fusion navigation technology commonly used by unmanned ground vehicles is prone to GPS interruption in complex environments, resulting in the inability of the system to locate accurately.
Kuibao Zhu   +5 more
doaj   +1 more source

Comprehensive Comparisons of Satellite Data, Signals, and Measurements between the BeiDou Navigation Satellite System and the Global Positioning System

open access: yesSensors, 2016
The Chinese BeiDou navigation satellite system (BDS) aims to provide global positioning service by 2020. The combined use of BDS and Global Positioning System (GPS) is proposed to provide navigation service with more stringent requirements.
Shau-Shiun Jan, An-Lin Tao
doaj   +1 more source

Construction and Accuracy Analysis of a BDS/GPS-Integrated Positioning Algorithm for Forests

open access: yesCroatian Journal of Forest Engineering, 2021
The objective of this study was to construct a BeiDou navigation satellite system (BDS)/ global positioning system (GPS)-integrated positioning algorithm that meets the accuracy requirement of forest surveys and to analyze its accuracy to provide ...
Fei Yan, Xueqi Hu, Lidan Xu, Yongrui Wu
doaj   +1 more source

Indoor positioning based on global positioning system signals [PDF]

open access: yes, 2012
The Global Positioning System (GPS) is highly reliable and accurate when used outdoors.However, in indoor environments, due to the additional signal loss incurred by the walls of the buildings, the detection and decoding of GPS signals becomes a ...
Bozkurt, Ayhan   +4 more
core   +2 more sources

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

Multi-GNSS Combined Precise Point Positioning Using Additional Observations with Opposite Weight for Real-Time Quality Control

open access: yesRemote Sensing, 2019
The emergence of multiple global navigation satellite systems (multi-GNSS), including global positioning system (GPS), global navigation satellite system (GLONASS), Beidou navigation satellite system (BDS), and Galileo, brings not only great ...
Wenju Fu   +6 more
doaj   +1 more source

Positioning performance analysis on combined GPS/BDS precise point positioning

open access: yesGeodesy and Geodynamics, 2020
Combining the observation data from five Multi-GNSS Experiment (MGEX) stations with the precise orbit and clock products from Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS), we studied the model of combined GPS/BDS precise ...
Jing Xiong, Fei Han
doaj   +1 more source

The Texas Spoofing Test Battery: Toward a Standard for Evaluating GPS Signal Authentication Techniques [PDF]

open access: yes, 2012
A battery of recorded spoofing scenarios has been compiled for evaluating civil Global Positioning System (GPS) signal authentication techniques. The battery can be considered the data component of an evolving standard meant to define the notion of ...
Bhatti, Jahshan A.   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy