Results 71 to 80 of about 12,661 (218)

THE DEVELOPMENT OF NAVIGATION SYSTEMS IN CIVIL AVIATION

open access: yesНаучный вестник МГТУ ГА, 2017
The article describes the history of navigation systems formation, such as "Cicada" system, which at that time could compete with the US "Transit", European, Chinese Beidou navigation system and the Japanese Quasi-Zenit.The detailed information about ...
A. S. Stepanenko
doaj  

Development of BeiDou Satellite‐Based Augmentation System

open access: yesNAVIGATION, 2021
China is developing its BeiDou Satellite-Based Augmentation System (BDSBAS) in accordance with international standards, and it has provided initial Single Frequency (SF) and Dual-Frequency Multi-Constellation (DFMC) services since July 2020. This paper gives a comprehensive introduction to BDSBAS from the aspects of its general design, system time ...
Liu Cheng   +8 more
openaire   +1 more source

China Offshore Data Translation Net and Information Integration and Release Platform [PDF]

open access: yes, 2012
China offshore marine observation station of Chinese academy of sciences consists of dozens of marine observation buoy system, which are spread in China's offshore to obtain the long-term continuous oceanographic elements.
Yonghua, Chen
core   +1 more source

A Window‐Augmented Machine Learning Approach for Direct GNSS Precipitable Water Vapor Retrieval

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract Global Navigation Satellite Systems (GNSS) provide an effective means for remote sensing of precipitable water vapor (PWV). However, conventional GNSS‐based PWV retrieval approaches rely heavily on auxiliary meteorological parameters, which are frequently unavailable in real time, while most direct retrieval methods use station data aggregated
Zhouao Zheng   +7 more
wiley   +1 more source

GNSS e dati geografici costituiscono la quinta infrastruttura primaria globale

open access: yesGEOmedia, 2014
2014 is the year of the official start of services provided by European Galileo satellite positioning system, and even if a few years late, the expectations for the induction of a rapidly growing market are many, with expected growth more then doubled by
Renzo Carlucci
doaj   +2 more sources

Mitigation of Unmodeled Error to Improve the Accuracy of Multi-GNSS PPP for Crustal Deformation Monitoring [PDF]

open access: yes, 2019
High-rate multi-constellation global navigation satellite system (GNSS) precise point positioning (PPP) has been recognized as an efficient and reliable technique for large earthquake monitoring.
Chang, Xiao   +7 more
core   +1 more source

The Generating Mechanism and Suppression Measure of the ‘Wheel‐Rail’ Rolling Arc for Electrified Trains

open access: yesHigh Voltage, Volume 11, Issue 2, Page 370-384, April 2026.
ABSTRACT As the ‘main blood vessel’ of the traction power supply system for high‐speed trains, the ‘wheel‐rail’ coupling grounding reflux system provides the vital channel to send traction current back to terrestrial substations; meanwhile, the rail track also plays a role in transmitting the train's occupancy signal to the control system. An insulated
Jiefu Hou   +9 more
wiley   +1 more source

Voice and Position Simultaneous Communication System Based on Beidou Navigation Constellation

open access: yesXibei Gongye Daxue Xuebao, 2020
Considering China Beidou has unique two-way communication capability for short messages that are not available in other navigation systems such as GPS, a 600bps vocoder adapted to the short message channel of Beidou is developed.

doaj   +1 more source

BMAL1 Drives Cisplatin Resistance in Non‐Small Cell Lung Cancer Via Lactate‐MRP1 Signaling Pathway

open access: yesThoracic Cancer, Volume 17, Issue 8, April 2026.
The drug cisplatin induces BMAL1 expression through AKT signaling in response to cisplatin‐induced oxidative stress. BMAL1 activates HIF‐1α‐mediated metabolic reprogramming and lactate production, which in turn activates the TAZ/c‐Jun/Snail complex to upregulate drug efflux pump MRP1, initiating and sustaining chemoresistance. ABSTRACT Lung cancer, the
Zixin Shi   +11 more
wiley   +1 more source

Sea target detection using spaceborne GNSS-R delay-doppler maps: theory and experimental proof of concept using TDS-1 data [PDF]

open access: yes, 2017
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Camps Carmona, Adriano José   +3 more
core   +2 more sources

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