Results 81 to 90 of about 506 (156)

Assimilation of GNSS ZTD with HARMONIE

, 2014
Póster presentado en: International Symposium on Data Assimilation 2014 celebrado en Munich, del 24 al 28 de febrero de ...
Sánchez Arriola, Jana, Thorsteinsson, Sigurdur, Lindskog, Magnus, Vedel, Henrik   +3 more
openaire   +1 more source

Shape‐Conditioned Human Motion Diffusion Model with Mesh Representation

Computer Graphics Forum, Volume 44, Issue 2, May 2025.
Abstract Human motion generation is a key task in computer graphics. While various conditioning signals such as text, action class, or audio have been used to harness the generation process, most existing methods neglect the case where a specific body is desired to perform the motion.
Kebing Xue, Hyewon Seo, Cedric Bobenrieth, Guoliang Luo   +3 more
wiley   +1 more source

Experiments with assimilation of ZTD GPS data

, 2004
Ponencia presentada en: HIRLAM All-Staff Meeting 2004 celebrado en Madrid, del 1 al 3 de marzo de 2004, en el Instituto Nacional de ...
Sánchez Arriola, Jana, Navascués, Beatriz, García-Moya, José Antonio   +2 more
openaire   +1 more source

A Zenith Tropospheric Delay Modeling Method Based on the UNB3m Model and Kriging Spatial Interpolation

Atmosphere
To accurately estimate Zenith Tropospheric Delay (ZTD) for high-precision positioning of the Global Navigation Satellite System (GNSS), this study proposes a modeling method of ZTD based on the UNB3m model and Kriging spatial interpolation, in which the ...
Huineng Yan, Zhigang Lu, Fang Li, Yu Li, Fuping Li, Rui Wang   +5 more
doaj   +1 more source

Assimilating UAV-based GNSS ZTDs for Numerical Weather Predictions

In recent decades, various studies have demonstrated that assimilating tropospheric parameters from ground-based GNSS receivers benefits numerical weather predictions (NWPs). However, the achieved performance is limited by the spatial resolution of GNSS, especially in the vertical direction.
Zhenyi Zhang, Mengjie Liu, Valeria Huber, Gregor Möller, Jan Henneberger, Philipp Kryenbühl, Lukas Hammerschmidt, Grzegorz Kłopotek, Benedikt Soja   +8 more
openaire   +2 more sources

Long-term ZTD and ZWD series and climate normals using NCEP1

, 2020
<p>The World Meteorological Organization (WMO) recommends the use of climate normals for dealing with the analysis of variations and trends of the meteorological parameters or be used as input to predictive climate models. The suggested period is 30 years, but shorter periods can also be employed.
Marcelo C. Santos, Marlon Moura, Thalia Nikolaidou, Kyriakos Balidakis   +3 more
openaire   +2 more sources

DESIGNATING THE ERROR OF VERTICAL COORDINATE OF AIRCRAFT POSITION IN THE GPS SYSTEM

Scientific Journal of Silesian University of Technology. Series Transport, 2020
This article presents the results of research concerning the determination of an error of the vertical position of an aircraft during a flight, taking into account, the flight altitude and the values of the ZTD tropospheric product.
Małgorzata KIRSCHENSTEIN, Kamil KRASUSKI, Artur GOŚ   +2 more
doaj   +1 more source

An Interferometric Synthetic Aperture Radar Tropospheric Delay Correction Method Based on a Global Navigation Satellite System and a Backpropagation Neural Network: More Suitable for Areas with Obvious Terrain Changes. [PDF]

Sensors (Basel), 2023
Qiu L, Chen P, Yao Y, Chen H, Tang F, Xiong M.   +5 more
europepmc   +1 more source

A New PatchTST-ZTD Forecasting Model Based on Different Global Climates and Its Performance in PPP

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Accurate modeling of zenith tropospheric delay (ZTD) is crucial for real-time high-precision positioning in global navigation satellite systems (GNSS). Deep learning methods are capable of effectively capturing the complex temporal patterns of ZTD time ...
Zhiping Chen, Hao Lu, Chiming Xu, Tao Liu, Haifeng Liu, Yu Gao, Haijun Yuan, Puhao Xu, Haiqing He, Kaiyun Lv   +9 more
doaj   +1 more source

An optimized BP neural network for modeling zenith tropospheric delay in the Chinese mainland using coupled particle swarm and genetic algorithm

Geo-spatial Information Science
Tropospheric delay influences high-precision navigation positioning and precipitable water vapor retrieval with the Global Navigation Satellite System (GNSS).
Liangke Huang, Haohang Bi, Hongxing Zhang, Shitai Wang, Fasheng Liao, Lilong Liu, Weiping Jiang   +6 more
doaj   +1 more source