Results 51 to 60 of about 35,353,961 (165)

Modernization of GNSS, RNSS, and SBAS

open access: yesTechnologies
This review provides an extensive overview of the modernization of Global Navigation Satellite System (GNSS), Regional Navigation Satellite System (RNSS), and Satellite-Based Augmentation System (SBAS) up to 28 September 2025.
Krunoslav Špoljar   +3 more
doaj   +1 more source

Rapid Land Surface Uplift and Groundwater Recovery Observed During the Syrian War

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Recent geopolitical upheaval in Syria is driving regional growth by returning populations, which increases demands on water resources. In northwest Syria, widespread cropland abandonment during the Syrian War starting in 2011 drastically changed the hydrological regime of the region.
Saeed Mhanna   +5 more
wiley   +1 more source

Indian plan for Satellite-Based Navigation Systems for Civil Aviation [PDF]

open access: yes, 2021
The Airports Authority of India and the Indian Space Research Organisation (ISRO) have signed a Memorandum of Understanding (MOU) to implement a satellite based navigation system as part of the satellite based Communication, Navigation, Surveillance (CNS)
Kibe, S. V.
core   +2 more sources

Modeling of Ionospheric Delay for SBAS Using Spherical Harmonics Functions [PDF]

open access: yesTransNav, 2013
In SBAS (satellite-based augmentation system), it is important to estimate ionospheric delay accurately to guarantee user's accuracy and integrity. Grid based ionospheric models are generally used to estimate ionospheric delay for SBAS.
Deokhwa Han, Ho Yun, Changdon Kee
doaj   +1 more source

Artificial Neural Network-Based Ionospheric Delay Correction Method for Satellite-Based Augmentation Systems

open access: yesRemote Sensing, 2022
Ionospheric delay is a critical error source in Global Navigation Satellite Systems (GNSSs) and a principal aspect of Satellite Based Augmentation System (SBAS) corrections.
Shan Wang, Ding Wang, Junren Sun
doaj   +1 more source

Global Primary and Secondary Microseism Multi‐Decade Geographic Variation, Secular Intensification, and Period Lengthening

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Earth's long‐period background seismic wavefield is dominated by two distinct processes that couple ocean wave energy to a global microseism wavefield. We assess global microseism intensity in the secondary (4–10 s) and primary (14–20 s) bands, and across eight 2 s‐wide period bands between 4 and 20 s.
Richard C. Aster   +4 more
wiley   +1 more source

Nigcomsat-1R Satellite-Based Augmentation System(SBAS) test bed trial: a scientific explanation

open access: yes, 2020
In October, 2016 the China Great Wall Industry Corporation and Spacestar Technology Company Ltd of China entered into a cooperative agreement with Nigerian Communications Satellite Ltd on a Satellite-Based Augmentation System (SBAS) performance test and ...
Lasisi Salami Lawal (16038599)   +3 more
core  

Results On Australia And New Zealand Second Generation SBAS And PPP Augmentation System

open access: yes, 2018
International audienceDuring 2017 and 2018 a second generation satellite positioning augmentation system is being demonstrated in Australia and New Zealand.
Fernández Vidou, Miguel Angel   +17 more
core   +1 more source

Crystal Engineering of Reticular Materials for Gas‐ and Liquid‐Phase Hydrocarbon Separation

open access: yesAdvanced Materials, Volume 38, Issue 16, 17 March 2026.
Crystal engineering enables systematic study of structure/function relationships as exemplified by pore engineering of reticular sorbents, including porous coordination networks and covalent organic frameworks. This review assesses such studies applied across the full scope of industrially relevant hydrocarbon separations to provide insight into how ...
Xia Li   +2 more
wiley   +1 more source

Real-Time Single Frequency Precise Point Positioning Using SBAS Corrections

open access: yesSensors, 2016
Real-time single frequency precise point positioning (PPP) is a promising technique for high-precision navigation with sub-meter or even centimeter-level accuracy because of its convenience and low cost. The navigation performance of single frequency PPP
Liang Li   +5 more
doaj   +1 more source

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