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   Articles with "ztd" as a keyword



Regional zenith tropospheric delay prediction using DBO-optimized CNN-LSTM with multihead attention

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recommendations! Published in 2025 at "Scientific Reports"

DOI: 10.1038/s41598-025-15376-z

Abstract: Zenith Total Delay (ZTD) is integral to applications such as atmospheric water vapor inversion and precise positioning in the Global Navigation Satellite System (GNSS). The development of high-precision regional ZTD models has emerged as a… read more here.

Keywords: multihead attention; ztd; cnn lstm; prediction ... See more keywords

New ZTD estimation model for areas with large elevation differences by integrating the GFS with GNSS

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recommendations! Published in 2025 at "Measurement Science and Technology"

DOI: 10.1088/1361-6501/adfcfe

Abstract: The Global Forecast System (GFS) of the National Center for Environmental Prediction (NCEP) can produce an hourly forecast output for estimating zenith tropospheric delay (ZTD) at any altitude on grid points. This study proposes a… read more here.

Keywords: ztd; elevation differences; large elevation; model ... See more keywords

Regional Tropospheric Delay Prediction Model Based on LSTM-Enhanced Encoder Network

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recommendations! Published in 2025 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"

DOI: 10.1109/jstars.2025.3565569

Abstract: Precise modeling of zenith tropospheric delay (ZTD) is essential for real-time high-precision positioning in global navigation satellite systems. Due to the stochastic variability of atmospheric water vapor across different regions, tropospheric delay exhibits strong regional… read more here.

Keywords: lstm enhanced; ztd; model; network ... See more keywords

A Zenith Tropospheric Delay Prediction Model Based on VMD-LSTM Neural Network

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recommendations! Published in 2025 at "IEEE Transactions on Aerospace and Electronic Systems"

DOI: 10.1109/taes.2025.3609313

Abstract: Zenith tropospheric delay (ZTD) is one of the primary error sources impacting the accuracy of global navigation satellite system precise point positioning and very long baseline interferometry (VLBI). Enhancing the accuracy of ZTD prediction is… read more here.

Keywords: navigation; vmd lstm; ztd; prediction ... See more keywords

An efficient deep learning-based troposphere ZTD dataset generation method for massive GNSS CORS stations

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recommendations! Published in 2023 at "IEEE Transactions on Geoscience and Remote Sensing"

DOI: 10.1109/tgrs.2023.3276874

Abstract: Nowadays, a large number of Global Navigation Satellite System (GNSS) continuously operating reference stations (CORS) have been established around the world, which have already been and will continue to provide massive troposphere zenith total delay… read more here.

Keywords: series; ztd; ztd dataset; deep learning ... See more keywords