Results 81 to 90 of about 27,390 (189)

The AuScope geodetic VLBI array [PDF]

Journal of Geodesy, 2013
Journal of Geodesy, March ...
Lovell, J., McCallum, J., Reid, P., McCulloch, P., Baynes, B., Dickey, J., Shabala, S., Watson, C., Titov, O., Ruddick, R., Twilley, R., Reynolds, Cormac, Tingay, Steven, Shield, P., Adada, R., Ellingsen, S., Morgan, John, Bignall, Hayley   +17 more
openaire   +3 more sources

Correcting Non‐Tidal Atmospheric and Oceanic Loading Displacements at the Observation, Normal Equation, and Parameter Levels in GNSS Data Analysis

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 6, June 2025.
Abstract Non‐tidal loading (NTL) introduces surface deformation on the Earth and increases the variability in coordinates measured by space geodetic techniques. Correcting NTL displacements in Global Navigation Satellite Systems (GNSS) analysis has been discussed extensively, commonly at the parameter level.
Jungang Wang, Kyriakos Balidakis, Henryk Dobslaw, Benjamin Männel, Maorong Ge, Robert Heinkelmann, Harald Schuh   +6 more
wiley   +1 more source

Key Science Observations of AGNs with KaVA Array

, 2015
KaVA (KVN and VERA Array) is a new combined VLBI array with KVN (Korean VLBI Network) and VERA (VLBI Exploration of Radio Astrometry). First, we briefly review the imaging capabilities of KaVA array which actually achieves more than three times better ...
group, KaVA AGN sub working, Kino, Motoki, Niinuma, Kotaro, Sohn, Bong Won, Zhao, Guang-Yao   +4 more
core   +1 more source

Studying the Inner Heliosphere Using Radio Signals Transmitted From Spacecraft Orbiting Mars

Space Weather, Volume 23, Issue 5, May 2025.
Abstract In this campaign, we used very long baseline interferometry (VLBI) radio telescopes to track the carrier radio signal transmitted from spacecraft orbiting Mars during the Mars solar conjunction. The campaign extended from September 6th $6\text{th}$ to November 6th $6\text{th}$ 2021 and targeted the Mars Express (MEX) and Tianwen‐1 (TIW ...
J. Edwards, G. Molera Calvés, P. Kummamuru, N. M. M. Said, M. Ma   +4 more
wiley   +1 more source

Deep Neural Networks for Refining Vertical Modeling of Global Tropospheric Delay

Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.
Abstract Kinematic airborne platforms are becoming increasingly vital for Earth observation. They highlight the critical need for accurate tropospheric delay corrections across varying altitudes, especially as most existing models are limited to Earth's surface.
Peng Yuan, Kyriakos Balidakis, Jungang Wang, Pengfei Xia, Jian Wang, Mingyuan Zhang, Weiping Jiang, Harald Schuh, Jens Wickert, Zhiguo Deng   +9 more
wiley   +1 more source

Linking Planetary Ephemeris Reference Frames to ICRF via Millisecond Pulsars

Universe
The positions of millisecond pulsars (MSPs) can be determined with sub-milliarcsecond (mas) accuracy using both Very Long Baseline Interferometry (VLBI) and timing, referenced to the International Celestial Reference Frame (ICRF) and planetary ...
Li Guo, Yueqi Song, Zhen Yan, Liang Li, Guangli Wang   +4 more
doaj   +1 more source

Improved geodetic European very-long-baseline interferometry solution using models of antenna gravitational deformation

Annals of Geophysics, 2010
Very-long-baseline interferometry (VLBI) is used for establishing global geodetic networks where the coordinates attain a 1-mm level of precision. Technique-dependent bias can degrade the VLBI positioning accuracy if it is present and unaccounted for ...
Claudio Abbondanza, Pierguido Sarti, Monia Negusini   +2 more
doaj   +1 more source

The follow-up EVN observations of twelve GPS radio sources at 5 GHz

, 2010
We defined a sub-sample of twelve GPS sources which have not been observed with the VLBI before, from the Parkes half-Jansky sample, and carried out VLBI observations at 1.6 GHz and 5 GHz with the European VLBI Network (EVN) in 2006 and 2008 ...
Dallacasa, de Vries, de Vries, Fanti, Fanti, Giroletti, H.-G. Song, J. Liu, Jauncey, Komatsu, L. Cui, Labiano, Liu, Liu, Luo, Murgia, O'Dea, Orienti, Orienti, Orienti, Ott, Snellen, Snellen, Snellen, Stanghellini, Stanghellini, Taylor, Tinti, Torniainen, X. Liu, Xiang, Z. Ding   +31 more
core   +1 more source

Role of Barystatic Sea Level Change in Global Mass Conservation and Its Excitation to Length‐Of‐Day Variations

Earth and Space Science, Volume 12, Issue 1, January 2025.
Abstract Barystatic sea level stores excess water mass from the atmosphere and land to maintain global mass conservations within the Earth system. Besides the secular contribution to global sea‐level rise, changes in barystatic sea level also play an important role in mass‐induced length‐of‐day (LOD) variations over a few years or shorter periods ...
Qiqi Shi, Yonghong Zhou, Cancan Xu, Xueqing Xu   +3 more
wiley   +1 more source

Holocene Paleoenvironment Changes Near Lake Funazoko‐Ike, East Antarctica, Based on Analyses of Sediments and Microfossils

Island Arc, Volume 34, Issue 1, January/December 2025.
ABSTRACT Lake Funazoko‐Ike was formed by a relative sea level fall due to crustal uplift after the melting of the ice sheet. Today, the lake surface lies approximately 25 m below the present sea level. Evidence of these processes is recorded in sediments deposited from the sill to the lake surface around Lake Funazoko‐Ike during the middle to late ...
Satoshi Sasaki, Koji Seto, Kota Katsuki
wiley   +1 more source