Results 91 to 100 of about 12,661 (218)

Radar Network Threat Estimation Based on Beidou [PDF]

open access: yesProceedings of the 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering 2015, 2015
Networking radar can make full use of resources and due to the advantages of single radar, making the detection, localization, tracking, identification, and other aspects of the threat of judgment performance has been greatly improved. With the gradual improvement of the Beidou system, powerful communication capability allows the network radar is no ...
Yan Song, Limin Liu
openaire   +1 more source

Satelliittipaikannusjärjestelmät ja niiden hyödyt yrityksille [PDF]

open access: yes, 2014
Eurooppa on kehittämässä uutta satelliittipaikannusjärjestelmää nimeltään Galileo. Tämän opinnäytetyön tavoitteena on analysoida paikannusjärjestelmät ja niiden tuomat mahdollisuudet.
Chung, Dat
core  

Regional Medium‐Scale Traveling Ionospheric Disturbance Propagation Model Based on BDS GEO Satellites

open access: yesSpace Weather, Volume 24, Issue 1, January 2026.
Abstract Accurate modeling of traveling ionospheric disturbances (TIDs) is essential for characterizing their spatiotemporal variations and mitigating their effects on Global Navigation Satellite System (GNSS) precise positioning. This study develops a regional medium‐scale TID (MSTID) propagation model using BeiDou geostationary orbit (GEO) total ...
Dengkui Mei   +5 more
wiley   +1 more source

China is on the track tackling Enteromorpha spp forming green tide [PDF]

open access: yes, 2008
Green tide management is supposed to be a long term fight rather than an episode during the 29th Olympic Games for China, since it has been gaining in scale and frequency during the past 3 decades in both marine and estuary environment all over the world.
Bin Li   +10 more
core   +1 more source

Freshly Generated Super Sunrise Plasma Bubbles During the Geomagnetic Storm on November 5–6, 2023

open access: yesSpace Weather, Volume 24, Issue 1, January 2026.
Abstract During the geomagnetic storm on November 5–6, 2023, freshly generated super sunrise equatorial plasma bubbles (EPBs) and associated irregularities over the 80°–140°E sector were observed combining ground‐based and space observations from GNSS, ionosondes, HF Doppler records, and several satellite missions (COSMIC2, Swarm, and DMSP).
Ke Li   +7 more
wiley   +1 more source

Integrated positioning method of roadheader based on inertial technology

open access: yesMeitan kexue jishu
In view of the environmental constraints such as long working cycle and large vibration amplitude during the cutting of the roadheader in the fully mechanized excavation face, it is difficult for a single inertial navigation system to realize autonomous,
Lingfei SUN   +5 more
doaj   +1 more source

From ”Sapienza” to “Sapienza, State Archives in Rome”. A looping effect bringing back to the original source communication and culture by innovative and low cost 3D surveying, imaging systems and GIS applications [PDF]

open access: yes, 2016
Applicazione di tecnologie mensorie integrate Low Cost,web GIS,applicazione di tecniche di Computational photography per la comunicazione e condivisione dei dati, sistemi di Cloud computing.Archiviazione Grandi DatiHigh Quality survey models, realized ...
Catalani,Giulia   +8 more
core   +1 more source

Space-Time Reference with an Optical Link

open access: yes, 2015
We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul   +3 more
core   +1 more source

Desain dan Pengembangan Sistem Kecerdasan Robotika Muatan Roket dengan 5 Derajat Kebebasan dengan Kontrol Sistem Pendaratan Navigasi X-Y Kartesian [PDF]

open access: yes, 2010
In this study a design and manufacture a rocket payload system that has the ability to fly autonomously intelligently is discussed. The rocket payload system was designed to be able to return to the landing position.
Arhta, Zulfikar   +2 more
core  

The WRF Simulation Influence of Assimilating GNSS Water Vapor and Parameterization Schemes on Typhoon Rumbia

open access: yesAtmosphere
The Weather Research and Forecasting (WRF) model was used to simulate Typhoon Rumbia in this paper. The sensitivity experiments were conducted with 16 different parameterization combination schemes, including four microphysics (WSM6, WSM5, Lin, and ...
Li Li   +4 more
doaj   +1 more source

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