Results 61 to 70 of about 18,921 (197)

Tropospheric Propagation Effects Extracted From ADS‐B Messages

open access: yesEngineering Reports, Volume 7, Issue 12, December 2025.
This study explores the use of ADS‐B messages to estimate tropospheric effects, effectively isolating atmospheric influences from interference. The approach enables independent lower atmosphere studies and offers a cost‐free supplementary method for satellite applications, benefiting GNSS systems, especially at low elevation angles where multipath and ...
Alina‐Mihaela Badescu
wiley   +1 more source

Russian and Chinese Responses to U.S. Military Plans in Space [PDF]

open access: yes, 2008
Explores what countermeasures China and Russia are likely to take if the United States continues to pursue the weaponization of space, and what the broader implications for international security will ...
Hui Zhang, Pavel Podvig
core  

Statistical framework for estimating GNSS bias

open access: yes, 2015
We present a statistical framework for estimating global navigation satellite system (GNSS) non-ionospheric differential time delay bias. The biases are estimated by examining differences of measured line integrated electron densities (TEC) that are ...
Coster, Anthea J.   +4 more
core   +2 more sources

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

GNSS jamming resilience for close to shore navigation in the Northern Sea [PDF]

open access: yes, 2016
avigational error accounts for half of the accidents and serious incidents in close to shore maritime transport in Norway predominantly due to the rapidly changing weather conditions and the dangerous nature of the narrow inshore waters found along the ...
Bonenberg, Lukasz, Glomsvoll, Oeystein
core   +1 more source

Scientific and technical support of GLONASS application in agricultural production

open access: yesСельскохозяйственные машины и технологии, 2015
Introduction of technologies of the operated farming in agricultural production will support quality hi-tech breakthrough of agrarian sector of economy and a demand of GLONASS system and means in agriculture.
A. A. Artyushin, I. G. Smirnov
doaj  

Consistency of MGEX Orbit and Clock Products

open access: yesEngineering, 2020
The analysis centers of the Multi-GNSS Pilot Project of the International GNSS Service provide orbit and clock products for the global navigation satellite systems (GNSSs) Global Positioning System (GPS), GLONASS, Galileo, and BeiDou, as well as for the ...
Peter Steigenberger, Oliver Montenbruck
doaj   +1 more source

Design of a Solar Energy Storage Emergency Rescue Backpack Integrated With Global Positioning System, Light Emitting Diode, and a Heating Module

open access: yesEnergy Science &Engineering, Volume 13, Issue 12, Page 6160-6169, December 2025.
ABSTRACT Mountain climbing often involves sudden weather changes, group separation, and mobile device battery depletion, which can lead to life‐threatening emergencies. Enhancing survival and extending rescue time in such situations are crucial, making power supply and emergency equipment essential considerations.
Jian‐Sheng Huang, Li‐Chin Shih
wiley   +1 more source

The ISCIP Analyst, Volume XIV, Issue 8 [PDF]

open access: yes, 2008
This repository item contains a single issue of The ISCIP Analyst, an analytical review journal published from 1996 to 2010 by the Boston University Institute for the Study of Conflict, Ideology, and ...
Adami, Fabian   +8 more
core   +1 more source

Spacecraft VLBI and Doppler tracking: algorithms and implementation [PDF]

open access: yes, 2012
We present the results of several multi-station Very Long Baseline Interferometry (VLBI) experiments conducted with the ESA spacecraft Venus Express as a target.
Bahamon, Tatiana Bocanegra   +5 more
core   +1 more source

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