Results 31 to 40 of about 7,830 (211)

Satellite mapping in cities and below cities: how good is it now? [PDF]

open access: yes, 2016
Global navigation satellite systems (GNSS) have existed since the launch of the US global positioning system constellation in 1978. There is an increasing need for better maps in the digital age, particularly for buried utilities.
Barnes J   +21 more
core   +1 more source

Research on the Application of the Beidou Third Generation in Grain Logistics Information System

open access: yesLiang you shipin ke-ji, 2023
This article elaborates the Beidou third-generation satellite navigation positioning and its application advantages on the advantages application of logistics tracking and emergency command and dispatch in the grain industry. Through the basic principles
LI De-yan   +3 more
doaj   +1 more source

Characterizing Power Consumption of Dual-Frequency GNSS of a Smartphone

open access: yes, 2020
Location service is one of the most widely used features on a smartphone. More and more apps are built based on location services. As such, demand for accurate positioning is ever higher.
Karki, Bikram, Won, Myounggyu
core   +1 more source

A Decentralized Processing Schema for Efficient and Robust Real-time Multi-GNSS Satellite Clock Estimation [PDF]

open access: yes, 2019
Real-time multi-GNSS precise point positioning (PPP) requires the support of high-rate satellite clock corrections. Due to the large number of ambiguity parameters, it is difficult to update clocks at high frequency in real-time for a large reference ...
Ge, Maorong   +4 more
core   +1 more source

FLAMINGO – Fulfilling enhanced location accuracy in the mass-market through initial GalileO services [PDF]

open access: yes, 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

Passive detection of moving aerial target based on multiple collaborative GPS satellites [PDF]

open access: yes, 2020
Passive localization is an important part of intelligent surveillance in security and emergency applications. Nowadays, Global Navigation Satellite Systems (GNSSs) have been widely deployed. As a result, the satellite signal receiver may receive multiple
Chen, Yunfei   +5 more
core   +1 more source

A review of satellite positioning systems for civil engineering [PDF]

open access: yes, 2015
This paper informs and updates civil engineers of the status and advances of global navigation satellite systems, and how this will affect the profession in the near future. An overview of the various global and regional systems is given. Real data are
Brown, C, Roberts, GW, Tang, X
core   +2 more sources

Review of code and phase biases in multi-GNSS positioning [PDF]

open access: yes, 2016
A review of the research conducted until present on the subject of Global Navigation Satellite System (GNSS) hardware-induced phase and code biases is here provided. Biases in GNSS positioning occur because of imperfections and/or physical limitations in
A Al-Shaery   +35 more
core   +1 more source

A two-step method to detect broadcast ephemeris unavailable periods caused by BeiDou satellite orbital maneuvers

open access: yesGeodesy and Geodynamics, 2023
The space constellation of the BeiDou navigation satellite system (BDS) is a hybrid constellation containing medium earth orbit (MEO) satellites, geostationary earth orbit (GEO) satellites, and inclined geosynchronous orbit (IGSO) satellites.
Jingjing Wang, Chao Zhou, Zhixuan Sun
doaj   +1 more source

BeiDou Augmented Navigation from Low Earth Orbit Satellites

open access: yesSensors, 2019
Currently, the Global Navigation Satellite System (GNSS) mainly uses the satellites in Medium Earth Orbit (MEO) to provide position, navigation, and timing (PNT) service.
Mudan Su   +3 more
doaj   +1 more source

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